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Objective The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity. Fees and Expenses This table describes the fees and expenses that you may pay if 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 table and examples below. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) 0.0010 0.0005 0.0005 0.0015 -0.0000 0.0015 Example The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. The Example is based on net operating expenses, which reflect the contractual undertaking by BNY Mellon Investment Adviser, Inc. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 15 48 85 192 Principal Investment Strategy The fund pursues its investment objective by investing only in U.S. Treasury securities, including those with floating or variable rates of interest, repurchase agreements collateralized fully by U.S. Treasury securities and/or cash, and cash. The fund is a money market fund subject to the maturity, quality, liquidity and diversification requirements of Rule 2a-7 under the Investment Company Act of 1940, as amended (1940 Act), and seeks to maintain a stable share price of $1.00. The fund is a "government money market fund," as that term is defined in Rule 2a-7, and as such will invest at least 99.5% of its total assets in securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities, repurchase agreements collateralized fully by cash and/or government securities, and cash. Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in U.S. Treasury securities and repurchase agreements collateralized fully by U.S Treasury securities. The fund typically invests exclusively in U.S. Treasury securities and repurchase agreements collateralized fully by U.S. Treasury securities. "Treasury obligations" refers to the fund’s investments in securities issued or guaranteed as to principal and interest by the U.S. government, including those with floating or variable rates of interest.The fund seeks to enter into repurchase agreements that present minimal credit risk (and are considered "eligible securities" as defined in Rule 2a-7 under the 1940 Act), based on an assessment by Dreyfus, a division of Mellon Investments Corporation, the fund's sub-adviser, of the counterparty's credit quality and capacity to meet its financial obligations, among other factors. Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment <div style="border-bottom:0.25pt; border-bottom-style:solid; border-bottom-color:#000000; padding:0pt 0pt 1pt 0pt;"><div style="font-size:12.0pt; font-family:Arial; text-align:left; color:#000000; font-weight:bold;">Principal Risks</div></div>An investment in the fund is not a bank account or a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 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's yield will fluctuate as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in securities with different interest rates. BNY Mellon Investment Adviser, Inc. and its affiliates are not required to reimburse the fund for losses, and you should not expect that BNY Mellon Investment Adviser, Inc. or its affiliates will provide financial support to the fund at any time, including during periods of market stress. The fund is subject to the following principal risks: An investment in the fund is not a bank account or a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 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's yield will fluctuate as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in securities with different interest rates. · Interest rate risk: This risk refers to the decline in the prices of fixed-income securities that may accompany a rise in the overall level of interest rates. A sharp and unexpected rise in interest rates could impair the fund's ability to maintain a stable net asset value. A wide variety of market factors can cause interest rates to rise, including central bank monetary policy, rising inflation and changes in general economic conditions. It is difficult to predict the pace at which central banks or monetary authorities may increase (or decrease) interest rates or the timing, frequency, or magnitude of such changes. Changing interest rates may have unpredictable effects on markets, may result in heightened market volatility and may detract from fund performance. For floating and variable rate obligations, there may be a lag between an actual change in the underlying interest rate benchmark and the reset time for an interest payment of such an obligation, which could harm or benefit the fund, depending on the interest rate environment or other circumstances. · Liquidity risk: When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities in a timely manner at or near their perceived value. In such a market, the value of such securities may fall dramatically, potentially impairing the fund's ability to maintain a stable net asset value. · U.S. Treasury securities risk: A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity, but the market prices for such securities are not guaranteed and will fluctuate. · Repurchase agreement counterparty risk: The fund is subject to the risk that a counterparty in a repurchase agreement could fail to honor the terms of the agreement. If this occurs, the fund may suffer a loss if the proceeds from the sale of the underlying securities are less than the repurchase price. · Market risk: The value of the securities in which the fund invests may be affected by political, regulatory, economic and social developments. In addition, turbulence in financial markets and reduced liquidity in fixed-income markets may negatively affect many issuers, which could adversely affect the fund. Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies world-wide. Local, regional or global events such as war, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, recessions, elevated levels of government debt, changes in trade regulation or economic sanctions, internal unrest and discord, or other events could have a significant impact on the fund and its investments. Performance The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the performance of the fund's Hamilton shares from year to year. The table shows the average annual total returns of the fund's Hamilton shares over time. The fund's past performance is not necessarily an indication of how the fund will perform in the future. More recent performance information may be available at www.dreyfus.com. The following bar chart and table provide some indication of the risks of investing in the fund. The fund's past performance is not necessarily an indication of how the fund will perform in the future. www.dreyfus.com Year-by-Year Total Returns as of 12/31 each year (%) During the periods shown in the chart: Best Quarter 2023, Q4: 1.33 Worst Quarter 2021, Q4: 0.00 <p style="margin-top:revert; margin-bottom:revert;font-size:9.0pt; font-family:Serif; text-align:left; color:#000000; text-indent:-4.3pt; font-weight:normal; margin-left:8.6pt; text-decoration:none; font-style:italic;">The year-to-date total return of the fund's Hamilton shares as of June 30, 2026 was 1.78% Best Quarter 2023-12-31 0.0133 Worst Quarter 2021-12-31 0.0000 The year-to-date total return of the fund's Hamilton shares as of 2026-06-30 0.0178 Average Annual Total Returns (as of 12/31/25) 0.0422 0.0319 0.0208 Institutions may call toll-free 1-800-373-9387 (inside the U.S. only) for the current yield of the fund's Hamilton shares. Individuals or entities for whom institutions may purchase or redeem shares should call the institution directly. 1-800-373-9387 Fund Summary Investment Objective The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity. Fees and Expenses This table describes the fees and expenses that you may pay if 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 table and examples below. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) 0.0010 0.0010 -0.0000 0.0010 Example The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then hold or redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. The Example is based on net operating expenses, which reflect the contractual undertaking by BNY Mellon Investment Adviser, Inc. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 10 32 56 128 Principal Investment Strategy The fund pursues its investment objective by investing only in U.S. Treasury securities, including those with floating or variable rates of interest, repurchase agreements collateralized fully by U.S. Treasury securities and/or cash, and cash. The fund is a money market fund subject to the maturity, quality, liquidity and diversification requirements of Rule 2a-7 under the Investment Company Act of 1940, as amended (1940 Act), and seeks to maintain a stable share price of $1.00. The fund is a "government money market fund," as that term is defined in Rule 2a-7, and as such will invest at least 99.5% of its total assets in securities issued or guaranteed as to principal and interest by the U.S. government or its agencies or instrumentalities, repurchase agreements collateralized fully by cash and/or government securities, and cash. Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in U.S. Treasury securities and repurchase agreements collateralized fully by U.S Treasury securities. The fund typically invests exclusively in U.S. Treasury securities and repurchase agreements collateralized fully by U.S. Treasury securities. "Treasury obligations" refers to the fund’s investments in securities issued or guaranteed as to principal and interest by the U.S. government, including those with floating or variable rates of interest.The fund seeks to enter into repurchase agreements that present minimal credit risk (and are considered "eligible securities" as defined in Rule 2a-7 under the 1940 Act), based on an assessment by Dreyfus, a division of Mellon Investments Corporation, the fund's sub-adviser, of the counterparty's credit quality and capacity to meet its financial obligations, among other factors. Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in U.S. Treasury securities and repurchase agreements collateralized fully by U. S Treasury securities. The fund <div style="border-bottom:0.25pt; border-bottom-style:solid; border-bottom-color:#000000; padding:0pt 0pt 1pt 0pt;"><div style="font-size:12.0pt; font-family:Arial; text-align:left; color:#000000; font-weight:bold;">Principal Risks</div></div>An investment in the fund is not a bank account or a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 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's yield will fluctuate as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in securities with different interest rates. BNY Mellon Investment Adviser, Inc. and its affiliates are not required to reimburse the fund for losses, and you should not expect that BNY Mellon Investment Adviser, Inc. or its affiliates will provide financial support to the fund at any time, including during periods of market stress. The fund is subject to the following principal risks: An investment in the fund is not a bank account or a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 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's yield will fluctuate as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in securities with different interest rates. · Interest rate risk: This risk refers to the decline in the prices of fixed-income securities that may accompany a rise in the overall level of interest rates. A sharp and unexpected rise in interest rates could impair the fund's ability to maintain a stable net asset value. A wide variety of market factors can cause interest rates to rise, including central bank monetary policy, rising inflation and changes in general economic conditions. It is difficult to predict the pace at which central banks or monetary authorities may increase (or decrease) interest rates or the timing, frequency, or magnitude of such changes. Changing interest rates may have unpredictable effects on markets, may result in heightened market volatility and may detract from fund performance. For floating and variable rate obligations, there may be a lag between an actual change in the underlying interest rate benchmark and the reset time for an interest payment of such an obligation, which could harm or benefit the fund, depending on the interest rate environment or other circumstances. · Liquidity risk: When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities in a timely manner at or near their perceived value. In such a market, the value of such securities may fall dramatically, potentially impairing the fund's ability to maintain a stable net asset value. · U.S. Treasury securities risk: A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity, but the market prices for such securities are not guaranteed and will fluctuate. · Repurchase agreement counterparty risk: The fund is subject to the risk that a counterparty in a repurchase agreement could fail to honor the terms of the agreement. If this occurs, the fund may suffer a loss if the proceeds from the sale of the underlying securities are less than the repurchase price. · Market risk: The value of the securities in which the fund invests may be affected by political, regulatory, economic and social developments. In addition, turbulence in financial markets and reduced liquidity in fixed-income markets may negatively affect many issuers, which could adversely affect the fund. Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies world-wide. Local, regional or global events such as war, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, recessions, elevated levels of government debt, changes in trade regulation or economic sanctions, internal unrest and discord, or other events could have a significant impact on the fund and its investments. Performance The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the performance of the fund's Institutional shares from year to year. The table shows the average annual total returns of the fund's Institutional shares over time. The fund's past performance is not necessarily an indication of how the fund will perform in the future. More recent performance information may be available at www.dreyfus.com. The following bar chart and table provide some indication of the risks of investing in the fund. The fund's past performance is not necessarily an indication of how the fund will perform in the future. www.dreyfus.com Year-by-Year Total Returns as of 12/31 each year (%) During the periods shown in the chart: Best Quarter 2023, Q4: 1.34 Worst Quarter 2021, Q4: 0.00 <p style="margin-top:revert; margin-bottom:revert;font-size:9.0pt; font-family:Serif; text-align:left; color:#000000; text-indent:-4.3pt; font-weight:normal; margin-left:8.6pt; text-decoration:none; font-style:italic;">The year-to-date total return of the fund's Institutional shares as of June 30, 2026 was 1.81%. Best Quarter 2023-12-31 0.0134 Worst Quarter 2021-12-31 0.0000 The year-to-date total return of the fund's Institutional shares as of 2026-06-30 0.0181 Average Annual Total Returns (as of 12/31/25) 0.0427 0.0323 0.0212 <p style="margin-top:revert; margin-bottom:revert; font-size:9.0pt; font-family:Serif; text-align:left; color:#000000; text-indent:0.4pt; font-weight:normal; margin-left:4.5pt; text-decoration:none; font-style:italic;">Institutions may call toll-free 1-800-373-9387 (inside the U.S. only) for the current yield of the fund's Institutional shares. Individuals or entities for whom institutions may purchase or redeem shares should call the institution directly. 1-800-373-9387 485BPOS 2026-04-30 0001423799 false 2026-08-27 ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary1Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member ~ ~ http://xbrl.sec.gov/rr/role/ExpenseExample row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary1Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member ~ ~ http://xbrl.sec.gov/rr/role/PerformanceTableData column period compact * row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary1Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member row oef_ClassAxis compact * row oef_PerformanceMeasureAxis compact * ~ ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary2Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member ~ ~ http://xbrl.sec.gov/rr/role/ExpenseExample row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary2Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member ~ ~ http://xbrl.sec.gov/rr/role/PerformanceTableData column period compact * row dei_DocumentInformationDocumentAxis compact cik0001423799_S000021490Summary2Member row dei_LegalEntityAxis compact cik0001423799_S000021490Member row oef_ClassAxis compact * row oef_PerformanceMeasureAxis compact * ~ 0.0019 0.0073 0.017 0.0203 0.0031 0.0001 0.0157 0.0505 0.0519 0.0421999979019165 0.0024 0.0078 0.0175 0.0208 0.0033 0.0001 0.0161 0.0511 0.0524 0.0426999998092651 ~ http://www.dreyfus.com/20260430/role/RRRiskTable3 ~ ~ http://www.dreyfus.com/20260430/role/RRRiskTable5 ~ The fund's investment adviser, BNY Mellon Investment Adviser, Inc., has agreed in its management agreement with the fund to pay all of the fund's expenses, except management fees, brokerage fees and commissions, if any, fees pursuant to any administration agreement or distribution or service plan adopted by the fund, fees and expenses of the non-interested board members and their counsel and independent counsel to the fund, and any extraordinary expenses. BNY Mellon Investment Adviser, Inc. has further agreed to reduce its fee in an amount equal to the fund's allocable portion of the fees and expenses of the non-interested board members and the fees and expenses of independent counsel to the fund and to the non-interested board members (in the amount of less than .01% for the past fiscal year). These provisions in the management agreement may not be amended without the approval of the fund's shareholders. The fund's investment adviser, BNY Mellon Investment Adviser, Inc., has agreed in its management agreement with the fund to pay all of the fund's expenses, except management fees, brokerage fees and commissions, if any, fees pursuant to any administration agreement or distribution or service plan adopted by the fund, fees and expenses of the non-interested board members and their counsel and independent counsel to the fund, and any extraordinary expenses. BNY Mellon Investment Adviser, Inc. has further agreed to reduce its fee in an amount equal to the fund's allocable portion of the fees and expenses of the non-interested board members and the fees and expenses of independent counsel to the fund and to the non-interested board members (in the amount of less than .01% for the past fiscal year). These provisions in the management agreement may not be amended without the approval of the fund's shareholders.