Shareholder Report |
11 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025
USD ($)
Holdings
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Dec. 31, 2025
USD ($)
Holdings
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| Shareholder Report [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||
| Document Type | N-CSR | |||||||||||||||||||||||||||||||||||||||||||
| Amendment Flag | false | |||||||||||||||||||||||||||||||||||||||||||
| Registrant Name | Matthew 25 Fund | |||||||||||||||||||||||||||||||||||||||||||
| Entity Central Index Key | 0001003839 | |||||||||||||||||||||||||||||||||||||||||||
| Entity Investment Company Type | N-1A | |||||||||||||||||||||||||||||||||||||||||||
| Document Period End Date | Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||
| MATTHEW 25 FUND | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | MATTHEW 25 FUND | |||||||||||||||||||||||||||||||||||||||||||
| Class Name | Matthew 25 Fund | |||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | MXXVX | |||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] |
ADDITIONAL INFORMATION
This contains important information about the Matthew 25 Fund - MXXVX for the period January 1, 2025 to December 31, 2025, as well as certain changes to the Fund. |
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| Shareholder Report Annual or Semi-Annual | annual shareholder report | |||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] |
You can find additional information, including the Shareholder's Letter, at www.matthew25fund.com or you can also request this information by contacting us at 1-888-M25-FUND.
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| Additional Information Phone Number | 1-888-M25-FUND | |||||||||||||||||||||||||||||||||||||||||||
| Additional Information Email | www.matthew25fund.com | |||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
expense Information
What were the Fund costs for the past year? (based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 120 | |||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.10% | |||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Dear Owners, Our Matthew 25 Fund’s (MXXVX) return was 18.45% in 2025. This was greater than the 17.88% return on the S&P 500 Index. Our Fund is still close to fully invested at 99.3% of total assets. I always emphasize long-term investing over trading and market timing. Below are additional time periods’ returns for your information: Period MXXVX S&P 500 3 years 27.22% 22.96% 15 years 13.55% 14.05% 25 years 10.42% 8.82% 30 years 11.51% 10.34% A $10,000.00 investment in MXXVX at its start on 10/16/1995 has grown to $268,487.48. This is a period of just over 30 years. My wife and I have been owners since the beginning and we intend to buy more shares this current year. As of 2/13/26, we own 12.80% of MXXVX. During this past year, I made the following changes to our portfolio: Sold – Mastercard, Vornado, Flutter and MGM Bought + Taiwan Semiconductor, Eli Lilly, Nucor, Fannie Mae, Solstice Adv. Materials, and Circle Internet Group Explanations for these portfolio changes along with performances for these new holdings and our legacy investments are provided in my Letter for Shareholders December 2025 which is on our website. The link is as follows: https://www.matthew25fund.com/annual-reports/ You will need to scroll down and then click on the letter to open it. As always, it is my honor to work for you and to invest side-by-side with you. |
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| Performance Past Does Not Indicate Future [Text] | Past performance is not a good predictor of future performance | |||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
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| Average Annual Return [Table Text Block] |
Performance graph
AVERAGE ANNUAL RETURNS
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| Net Assets | $ 329,310,530 | $ 329,310,530 | ||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holdings | 23 | 23 | ||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 3,098,922 | |||||||||||||||||||||||||||||||||||||||||||
| Investment Company, Portfolio Turnover | 37.03% | |||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund statistics
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| Holdings [Text Block] |
Asset Allocation
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| Largest Holdings [Text Block] |
Ttop ten holdings
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| Material Fund Change [Text Block] |
HOW HAS THE FUND CHANGED
The Fund has not had any material changes during the year ended December 31, 2025. |
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| Updated Prospectus Phone Number | 1-888-M25-FUND. | |||||||||||||||||||||||||||||||||||||||||||
| Updated Prospectus Email Address | https://www.matthew25fund.com/ | |||||||||||||||||||||||||||||||||||||||||||