2 hedge funds and family offices disclose a FAST position in their latest SEC 13F filing — combined $187.3M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Mairs & Power | Mairs & Power Inc | 4,667,499 | $187.3M | 1.80% | 2025-12-31 |
| 2 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 457 | $18K | 0.00% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold FAST. The largest disclosed position is Mairs & Power at $187.3M (1.8% of portfolio).
13F filings are due 45 days after each quarter end and capture long-equity positions held by U.S. institutional managers with $100M+ AUM. Use this page to see exactly who is buying FAST, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
2 hedge funds and family offices disclose a FAST position in their latest SEC 13F filing — combined $187.3M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Mairs & Power | Mairs & Power Inc | 4,667,499 | $187.3M | 1.80% | 2025-12-31 |
| 2 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 457 | $18K | 0.00% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold FAST. The largest disclosed position is Mairs & Power at $187.3M (1.8% of portfolio).
13F filings are due 45 days after each quarter end and capture long-equity positions held by U.S. institutional managers with $100M+ AUM. Use this page to see exactly who is buying FAST, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
