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2018-01-01
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0000356173
N-1A
Fidelity Colchester Street Trust
Fund Summary
Fund /Class:
Government Portfolio
/Select
Investment Objective
Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0005
0.0007
0.0026
0.0023
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
24
80
142
327
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities).
Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities.
U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Government Obligations Risk.
Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0020
0.0070
0.0167
0.0204
0.0032
0.0001
0.0143
0.0497
0.0512
0.0415
Highest Quarter Return
0.0131
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0087
2026-03-31
Average Annual Returns
Select Class
0.0415
0.0312
0.0204
Fund Summary
Fund /Class:
Money Market Portfolio
/Select
Investment Objective
Money Market Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0005
0.0007
0.0026
0.0023
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
24
80
142
327
Principal Investment Strategies
Investing in U.S. dollar-denominated money market securities of domestic and foreign issuers, U.S. Government securities, and repurchase agreements.
Investing more than 25% of total assets in the financial services industries.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries.
Financial Services Concentration.
Changes in government regulation and interest rates and economic downturns can have a significant negative effect on issuers in the financial services sector, including the price of their securities or their ability to meet their payment obligations.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0043
0.0108
0.0195
0.0220
0.0049
0.0001
0.0164
0.0507
0.0518
0.0420
Highest Quarter Return
0.0133
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0088
2026-03-31
Average Annual Returns
Select Class
0.0420
0.0320
0.0221
Fund Summary
Fund /Class:
Tax-Exempt Portfolio
/Select
Investment Objective
Tax-Exempt Portfolio seeks to obtain as high a level of interest income exempt from federal income tax as is consistent with liquidity and stability of principal.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0005
0.0008
0.0027
0.0023
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
24
81
146
338
Principal Investment Strategies
Normally investing in municipal money market securities.
Normally investing at least 80% of assets in municipal securities whose interest is exempt from federal income tax.
Municipal money market securities are high-quality, short-term debt securities that pay a fixed, variable, or floating interest rate, and include variable rate demand notes, commercial paper, and municipal notes. Municipal securities are issued to raise money for a variety of public and private purposes, including general financing for state and local governments, financing for eligible non-profit organizations, or financing for a specific project or public facility.
Normally not investing in municipal securities whose interest is subject to the federal alternative minimum tax.
Potentially investing up to 20% of assets in securities subject to state and/or federal income tax.
Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Municipal Market Volatility.
The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities providing credit support or a maturity-shortening structure that are located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries .
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0032
0.0066
0.0125
0.0131
0.0043
0.0001
0.0102
0.0315
0.0322
0.0256
Highest Quarter Return
0.0086
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0047
2026-03-31
Average Annual Returns
Select Class
0.0256
0.0198
0.0139
Fund Summary
Fund /Class:
Treasury Only Portfolio
/Select
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0005
0.0007
0.0026
0.0023
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
24
80
142
327
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0012
0.0066
0.0166
0.0199
0.0033
0.0001
0.0139
0.0483
0.0510
0.0410
Highest Quarter Return
0.0131
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0087
2026-03-31
Average Annual Returns
Select Class
0.0410
0.0306
0.0200
Fund Summary
Fund /Class:
Treasury Portfolio
/Select
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0005
0.0007
0.0026
0.0023
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
24
80
142
327
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0015
0.0069
0.0166
0.0202
0.0032
0.0001
0.0148
0.0497
0.0510
0.0413
Highest Quarter Return
0.0131
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0087
2026-03-31
Average Annual Returns
Select Class
0.0413
0.0312
0.0204
Fund Summary
Fund /Class:
Government Portfolio
/Institutional
Investment Objective
Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0004
0.0018
0.0014
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
14
53
96
225
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities).
Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities.
U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Government Obligations Risk.
Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0029
0.0079
0.0176
0.0213
0.0038
0.0001
0.0151
0.0507
0.0521
0.0424
Highest Quarter Return
0.0134
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0089
2026-03-31
Average Annual Returns
Institutional Class
0.0424
0.0319
0.0212
Fund Summary
Fund /Class:
Money Market Portfolio
/Institutional
Investment Objective
Money Market Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0004
0.0018
0.0014
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
14
53
96
225
Principal Investment Strategies
Investing in U.S. dollar-denominated money market securities of domestic and foreign issuers, U.S. Government securities, and repurchase agreements.
Investing more than 25% of total assets in the financial services industries.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries.
Financial Services Concentration.
Changes in government regulation and interest rates and economic downturns can have a significant negative effect on issuers in the financial services sector, including the price of their securities or their ability to meet their payment obligations.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0052
0.0117
0.0204
0.0230
0.0056
0.0003
0.0172
0.0517
0.0527
0.0429
Highest Quarter Return
0.0136
2023-12-31
Lowest Quarter Return
0.0000
2021-09-30
Year-to-Date Return
0.0090
2026-03-31
Average Annual Returns
Institutional Class
0.0429
0.0328
0.0229
Fund Summary
Fund /Class:
Treasury Only Portfolio
/Institutional
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0004
0.0018
0.0014
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
14
53
96
225
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0021
0.0075
0.0175
0.0209
0.0038
0.0001
0.0147
0.0492
0.0519
0.0419
Highest Quarter Return
0.0134
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0089
2026-03-31
Average Annual Returns
Institutional Class
0.0419
0.0314
0.0208
Fund Summary
Fund /Class:
Treasury Portfolio
/Institutional
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0004
0.0018
0.0014
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
14
53
96
225
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0024
0.0078
0.0176
0.0211
0.0038
0.0001
0.0155
0.0506
0.0519
0.0422
Highest Quarter Return
0.0133
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0089
2026-03-31
Average Annual Returns
Institutional Class
0.0422
0.0319
0.0211
Fund Summary
Fund /Class:
Treasury Only Portfolio
/IV
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0050
0.0007
0.0071
0.0068
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
69
223
391
879
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0001
0.0024
0.0120
0.0154
0.0020
0.0001
0.0108
0.0436
0.0462
0.0363
Highest Quarter Return
0.0120
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0075
2026-03-31
Average Annual Returns
Class IV
0.0363
0.0272
0.0167
Fund Summary
Fund /Class:
Treasury Portfolio
/IV
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0050
0.0007
0.0071
0.0068
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
69
223
391
879
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0001
0.0026
0.0121
0.0157
0.0020
0.0001
0.0117
0.0450
0.0463
0.0366
Highest Quarter Return
0.0120
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0076
2026-03-31
Average Annual Returns
Class IV
0.0366
0.0278
0.0171
Fund Summary
Fund /Class:
Government Portfolio
/III
Investment Objective
Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0025
0.0007
0.0046
0.0043
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
44
144
254
575
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities).
Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities.
U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Government Obligations Risk.
Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0002
0.0050
0.0147
0.0183
0.0026
0.0001
0.0129
0.0477
0.0491
0.0394
Highest Quarter Return
0.0126
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0082
2026-03-31
Average Annual Returns
Class III
0.0394
0.0296
0.0188
Fund Summary
Fund /Class:
Money Market Portfolio
/III
Investment Objective
Money Market Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0025
0.0007
0.0046
0.0043
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
44
144
254
575
Principal Investment Strategies
Investing in U.S. dollar-denominated money market securities of domestic and foreign issuers, U.S. Government securities, and repurchase agreements.
Investing more than 25% of total assets in the financial services industries.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries.
Financial Services Concentration.
Changes in government regulation and interest rates and economic downturns can have a significant negative effect on issuers in the financial services sector, including the price of their securities or their ability to meet their payment obligations.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0023
0.0088
0.0175
0.0200
0.0038
0.0001
0.0148
0.0486
0.0497
0.0399
Highest Quarter Return
0.0128
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0083
2026-03-31
Average Annual Returns
Class III
0.0399
0.0304
0.0204
Fund Summary
Fund /Class:
Tax-Exempt Portfolio
/III
Investment Objective
Tax-Exempt Portfolio seeks to obtain as high a level of interest income exempt from federal income tax as is consistent with liquidity and stability of principal.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0025
0.0008
0.0047
0.0043
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
44
145
258
586
Principal Investment Strategies
Normally investing in municipal money market securities.
Normally investing at least 80% of assets in municipal securities whose interest is exempt from federal income tax.
Municipal money market securities are high-quality, short-term debt securities that pay a fixed, variable, or floating interest rate, and include variable rate demand notes, commercial paper, and municipal notes. Municipal securities are issued to raise money for a variety of public and private purposes, including general financing for state and local governments, financing for eligible non-profit organizations, or financing for a specific project or public facility.
Normally not investing in municipal securities whose interest is subject to the federal alternative minimum tax.
Potentially investing up to 20% of assets in securities subject to state and/or federal income tax.
Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Municipal Market Volatility.
The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities providing credit support or a maturity-shortening structure that are located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries .
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0018
0.0046
0.0105
0.0111
0.0034
0.0001
0.0085
0.0295
0.0302
0.0236
Highest Quarter Return
0.0081
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0042
2026-03-31
Average Annual Returns
Class III
0.0236
0.0183
0.0123
Fund Summary
Fund /Class:
Treasury Only Portfolio
/III
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0025
0.0007
0.0046
0.0043
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
44
144
254
575
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0001
0.0046
0.0146
0.0179
0.0026
0.0001
0.0124
0.0462
0.0489
0.0389
Highest Quarter Return
0.0126
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0082
2026-03-31
Average Annual Returns
Class III
0.0389
0.0291
0.0185
Fund Summary
Fund /Class:
Treasury Portfolio
/III
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0025
0.0007
0.0046
0.0043
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
44
144
254
575
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0001
0.0049
0.0146
0.0182
0.0025
0.0001
0.0133
0.0476
0.0489
0.0392
Highest Quarter Return
0.0126
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0082
2026-03-31
Average Annual Returns
Class III
0.0392
0.0296
0.0188
Fund Summary
Fund /Class:
Government Portfolio
/II
Investment Objective
Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0015
0.0007
0.0036
0.0033
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
34
112
198
452
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities).
Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities.
U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Government Obligations Risk.
Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0010
0.0060
0.0157
0.0193
0.0028
0.0001
0.0136
0.0487
0.0501
0.0405
Highest Quarter Return
0.0129
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0084
2026-03-31
Average Annual Returns
Class II
0.0405
0.0304
0.0196
Fund Summary
Fund /Class:
Money Market Portfolio
/II
Investment Objective
Money Market Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0015
0.0007
0.0036
0.0033
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
34
112
198
452
Principal Investment Strategies
Investing in U.S. dollar-denominated money market securities of domestic and foreign issuers, U.S. Government securities, and repurchase agreements.
Investing more than 25% of total assets in the financial services industries.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries.
Financial Services Concentration.
Changes in government regulation and interest rates and economic downturns can have a significant negative effect on issuers in the financial services sector, including the price of their securities or their ability to meet their payment obligations.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0033
0.0098
0.0185
0.0210
0.0042
0.0001
0.0156
0.0497
0.0507
0.0409
Highest Quarter Return
0.0131
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0086
2026-03-31
Average Annual Returns
Class II
0.0409
0.0312
0.0212
Fund Summary
Fund /Class:
Tax-Exempt Portfolio
/II
Investment Objective
Tax-Exempt Portfolio seeks to obtain as high a level of interest income exempt from federal income tax as is consistent with liquidity and stability of principal.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0015
0.0008
0.0037
0.0033
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
34
113
202
463
Principal Investment Strategies
Normally investing in municipal money market securities.
Normally investing at least 80% of assets in municipal securities whose interest is exempt from federal income tax.
Municipal money market securities are high-quality, short-term debt securities that pay a fixed, variable, or floating interest rate, and include variable rate demand notes, commercial paper, and municipal notes. Municipal securities are issued to raise money for a variety of public and private purposes, including general financing for state and local governments, financing for eligible non-profit organizations, or financing for a specific project or public facility.
Normally not investing in municipal securities whose interest is subject to the federal alternative minimum tax.
Potentially investing up to 20% of assets in securities subject to state and/or federal income tax.
Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Municipal Market Volatility.
The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities providing credit support or a maturity-shortening structure that are located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries .
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0025
0.0056
0.0115
0.0121
0.0038
0.0001
0.0093
0.0305
0.0312
0.0246
Highest Quarter Return
0.0084
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0045
2026-03-31
Average Annual Returns
Class II
0.0246
0.0191
0.0131
Fund Summary
Fund /Class:
Treasury Only Portfolio
/II
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0015
0.0007
0.0036
0.0033
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
34
112
198
452
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0003
0.0056
0.0156
0.0189
0.0029
0.0001
0.0131
0.0472
0.0499
0.0399
Highest Quarter Return
0.0129
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0084
2026-03-31
Average Annual Returns
Class II
0.0399
0.0299
0.0192
Fund Summary
Fund /Class:
Treasury Portfolio
/II
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0.0015
0.0007
0.0036
0.0033
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
34
112
198
452
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
institutional.fidelity.com
Year-by-Year Returns
0.0006
0.0059
0.0156
0.0192
0.0028
0.0001
0.0140
0.0487
0.0499
0.0402
Highest Quarter Return
0.0129
2023-12-31
Lowest Quarter Return
0.0000
2022-03-31
Year-to-Date Return
0.0085
2026-03-31
Average Annual Returns
Class II
0.0402
0.0304
0.0195
Fund Summary
Fund /Class:
Government Portfolio
/I
Investment Objective
Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0007
0.0021
0.0018
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
18
64
114
264
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities).
Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities.
U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Government Obligations Risk.
Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0025
0.0075
0.0172
0.0209
0.0035
0.0001
0.0147
0.0503
0.0517
0.0420
Highest Quarter Return
0.0133
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0088
2026-03-31
Average Annual Returns
Class I
0.0420
0.0316
0.0209
Fund Summary
Fund /Class:
Money Market Portfolio
/I
Investment Objective
Money Market Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0007
0.0021
0.0018
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
18
64
114
264
Principal Investment Strategies
Investing in U.S. dollar-denominated money market securities of domestic and foreign issuers, U.S. Government securities, and repurchase agreements.
Investing more than 25% of total assets in the financial services industries.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries.
Financial Services Concentration.
Changes in government regulation and interest rates and economic downturns can have a significant negative effect on issuers in the financial services sector, including the price of their securities or their ability to meet their payment obligations.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0048
0.0113
0.0200
0.0226
0.0052
0.0001
0.0168
0.0512
0.0523
0.0425
Highest Quarter Return
0.0135
2023-12-31
Lowest Quarter Return
0.0000
2021-06-30
Year-to-Date Return
0.0089
2026-03-31
Average Annual Returns
Class I
0.0425
0.0324
0.0225
Fund Summary
Fund /Class:
Tax-Exempt Portfolio
/I
Investment Objective
Tax-Exempt Portfolio seeks to obtain as high a level of interest income exempt from federal income tax as is consistent with liquidity and stability of principal.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0008
0.0022
0.0018
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
18
65
118
275
Principal Investment Strategies
Normally investing in municipal money market securities.
Normally investing at least 80% of assets in municipal securities whose interest is exempt from federal income tax.
Municipal money market securities are high-quality, short-term debt securities that pay a fixed, variable, or floating interest rate, and include variable rate demand notes, commercial paper, and municipal notes. Municipal securities are issued to raise money for a variety of public and private purposes, including general financing for state and local governments, financing for eligible non-profit organizations, or financing for a specific project or public facility.
Normally not investing in municipal securities whose interest is subject to the federal alternative minimum tax.
Potentially investing up to 20% of assets in securities subject to state and/or federal income tax.
Potentially investing more than 25% of total assets in municipal securities that finance similar types of projects.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
Municipal Market Volatility.
The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Foreign Exposure.
Entities providing credit support or a maturity-shortening structure that are located in foreign countries can be affected by adverse political, regulatory, market, or economic developments in those countries .
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
You could lose money by investing in the fund.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The fund may impose a fee upon the sale of your shares.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0036
0.0071
0.0130
0.0136
0.0047
0.0001
0.0106
0.0320
0.0328
0.0261
Highest Quarter Return
0.0088
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0048
2026-03-31
Average Annual Returns
Class I
0.0261
0.0202
0.0143
Fund Summary
Fund /Class:
Treasury Only Portfolio
/I
Investment Objective
Treasury Only Portfolio seeks as high a level of current income as is consistent with the security of principal and liquidity.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0007
0.0021
0.0018
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
18
64
114
264
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash and U.S. Treasury securities.
Normally investing in securities whose interest is exempt from state and local income taxes.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0017
0.0071
0.0171
0.0205
0.0036
0.0001
0.0143
0.0488
0.0515
0.0415
Highest Quarter Return
0.0133
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0088
2026-03-31
Average Annual Returns
Class I
0.0415
0.0310
0.0204
Fund Summary
Fund /Class:
Treasury Portfolio
/I
Investment Objective
Treasury Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of principal and liquidity within the limitations prescribed for the fund.
Fee Table
The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder fees
0
Annual Operating Expenses
0.0014
0
0.0007
0.0021
0.0018
2027-07-31
This
example
helps compare the cost of investing in the fund with the cost of investing in other funds.
Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
18
64
114
264
Principal Investment Strategies
Normally investing at least 99.5% of total assets in cash, U.S. Treasury securities and/or repurchase agreements for those securities.
Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments.
In addition, the fund normally invests at least 80% of its assets in U.S. Treasury securities and repurchase agreements for those securities.
Treasury securities are high-quality securities issued or guaranteed by the U.S. Treasury. Treasury securities are backed by the full faith and credit of the U.S. Treasury. Treasury securities usually pay a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security.
A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Treasury securities or cash.
Interest Rate Changes.
Interest rate increases can cause the price of a money market security to decrease.
Income Risk.
A low or negative interest rate environment can adversely affect the fund's yield.
Issuer-Specific Changes.
A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease.
U.S. Treasury Obligations.
U.S. Treasury obligations are high-quality securities issued or guaranteed by the U.S. Treasury providing minimal risk of loss of principal if held to maturity. Fluctuations in interest rates may cause the market value of such securities to vary.
You could lose money by investing in the fund
.
Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so
.
An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency
.
Fidelity
Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress.
Performance
The following information is intended to help you understand the risks of investing in the fund.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
Visit
www.fidelity.com or institutional.fidelity.com
for more recent performance information.
The information illustrates the changes in the performance of the fund's shares from year to year.
Past performance is not an indication of future performance.
www.fidelity.com or institutional.fidelity.com
Year-by-Year Returns
0.0020
0.0074
0.0172
0.0207
0.0035
0.0001
0.0152
0.0502
0.0515
0.0418
Highest Quarter Return
0.0132
2023-12-31
Lowest Quarter Return
0.0000
2021-03-31
Year-to-Date Return
0.0088
2026-03-31
Average Annual Returns
Class I
0.0418
0.0316
0.0208