v3.26.1
Shareholder Report
6 Months Ended
May 31, 2026
USD ($)
Holdings
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name MSS SERIES TRUST
Entity Central Index Key 0001368578
Entity Investment Company Type N-1A
Document Period End Date May 31, 2026
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
True Rock Fund  
Shareholder Report [Line Items]  
Fund Name One Rock Fund
Class Name Institutional Class
Trading Symbol ONERX
Annual or Semi-Annual Statement [Text Block]

Additional Information:

This semi-annual shareholder report contains information about One Rock Fund - ONERX (the “Fund”) for the period December 1, 2025 to May 31, 2026.

Additional Information [Text Block]

You can find additional information about the Fund, including its prospectus, financial information, holdings, and proxy voting information, by visiting https://www.truerockfund.com. You can also request this information by contacting us at 1-800-564-3899.

 

Expenses [Text Block]

EXPENSE INFORMATION

What was the Fund’s costs for the last six months?

(based on a hypothetical $10,000 investment)

 

    Costs paid as a
  Cost of a percentage of a
  $10,000 $10,000 investment
Fund Name investment (annualized)
One Rock Fund $83 1.28%

 

Expenses Paid, Amount $ 83
Expense Ratio, Percent 1.28%
Performance Past Does Not Indicate Future [Text] Past performance is not a good predictor of future performance
Average Annual Return [Table Text Block]

TRAILING RETURNS

 

Period ending May 31, 2026
     
 

One Rock

Fund

S&P 500

Index

1 Year 126.69% 29.78%
     

5 Years

Annualized

36.08% 14.16%
     

Since Inception

Annualized*

43.73% 17.95%
     

Since Inception

Growth of

$10,000

$95,991 $27,989

 

*Annualized Returns Since Inception – March 6, 2020.

 

Past performance is not a good predictor of future performance. The returns shown do not reflect taxes that a shareholder would pay on Fund distributions or on the redemption of Fund shares. Updated performance data current to the most recent month-end can be obtained by calling 1-800-564-3899.

 

Net Assets $ 56,765,495
Holdings Count | Holdings 55
Advisory Fees Paid, Amount $ 193,661
Investment Company, Portfolio Turnover 329.75%
Additional Fund Statistics [Text Block]

ABOUT THE FUND

Net Assets $56,765,495
Portfolio Holdings 55
Portfolio Turnover 329.75%
Advisory Fees Paid by Fund $193,661

 

Holdings [Text Block]

 

 

Technology 69.87%
Industrials 15.34%
Financial Services 6.81%
Communication Services 3.28%
Consumer Cyclical 2.89%
Basic Materials 1.30%
Money Market Fund 0.51%

 

Largest Holdings [Text Block]

TOP 10 HOLDINGS (% OF NET ASSETS)

 

SNDK Sandisk Corp. 6.60%
MU Micron Technology, Inc. 6.16%
BE Bloom Energy Corp. 5.72%
COHR Coherent, Inc. 5.08%
NVDA NVIDIA Corporation 4.24%
DOCN DigitalOcean Holdings, Inc. 3.93%
CLS Celestica, Inc. 3.62%
PLTR Palantir Technologies Inc. 3.52%
LITE Lumentum Holdings, Inc. 3.49%
AMD Advanced Micro Devices, Inc. 3.33%
  TOTAL 45.69%

 

Material Fund Change [Text Block]

Material Fund Changes

Effective May 12, 2026, the Board appointed Bob Anastasi as Treasurer, Secretary and Chief Compliance Officer of the Trust and approved Hanover Fund Administration, LLC (“Hanover”) to provide administrator and compliance services to the Trust, replacing Empirical Administrators, LLC. Mr. Anastasi is the owner/president of Hanover, and also the vice president of MSS.

 

Effective June 26, 2026, One Rock Fund was renamed True Rock Fund. The ticker also changed from ONERX to TRUEX.

Updated Prospectus Phone Number 1-800-564-3899
Updated Prospectus Web Address https://www.truerockfund.com