12 hedge funds and family offices disclose a AMT position in their latest SEC 13F filing — combined $687.2M in market value. Of those, 3 are classified as value investors.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Viking Global | Viking Global Investors LP | 2,797,125 | $618.2M | 1.79% | 2025-06-30 |
| 2 | Stanley Druckenmiller | Duquesne Family Office LLC | 211,800 | $16.4M | 1.27% | 2012-12-31 |
| 3 | Tom Gayner | Markel Group Inc. | 51,910 | $12.1M | 0.11% | 2024-09-30 |
| 4 | Christopher Davis | Davis Selected Advisers, LP | 64,620 | $11.2M | 0.05% | 2026-03-31 |
| 5 | George Soros | Soros Fund Management LLC | 38,350 | $9.9M | 0.27% | 2020-06-30 |
| 6 | Ray Dalio | Bridgewater Associates LP | 56,914 | $9.8M | 0.04% | 2026-03-31 |
| 7 | Chuck Akre | Akre Capital Management, LLC | 50,772 | $8.8M | 0.14% | 2026-03-31 |
| 8 | Mairs & Power | Mairs & Power Inc | 2,020 | $355K | 0.00% | 2025-12-31 |
| 9 | Torray Funds | Torray Investment Partners LLC | 1,221 | $235K | 0.03% | 2025-09-30 |
| 10 | Lee Ainslie | Maverick Capital Ltd | 1,188 | $235K | 0.00% | 2024-03-31 |
| 11 | Chase Coleman | Tiger Global Management LLC | 605,000 | $80K | 0.70% | 2017-06-30 |
| 12 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 186 | $33K | 0.00% | 2025-12-31 |
As of the latest 13F window, 12 tracked superinvestors hold AMT. The largest disclosed position is Viking Global at $618.2M (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 AMT, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
12 hedge funds and family offices disclose a AMT position in their latest SEC 13F filing — combined $687.2M in market value. Of those, 3 are classified as value investors.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Viking Global | Viking Global Investors LP | 2,797,125 | $618.2M | 1.79% | 2025-06-30 |
| 2 | Stanley Druckenmiller | Duquesne Family Office LLC | 211,800 | $16.4M | 1.27% | 2012-12-31 |
| 3 | Tom Gayner | Markel Group Inc. | 51,910 | $12.1M | 0.11% | 2024-09-30 |
| 4 | Christopher Davis | Davis Selected Advisers, LP | 64,620 | $11.2M | 0.05% | 2026-03-31 |
| 5 | George Soros | Soros Fund Management LLC | 38,350 | $9.9M | 0.27% | 2020-06-30 |
| 6 | Ray Dalio | Bridgewater Associates LP | 56,914 | $9.8M | 0.04% | 2026-03-31 |
| 7 | Chuck Akre | Akre Capital Management, LLC | 50,772 | $8.8M | 0.14% | 2026-03-31 |
| 8 | Mairs & Power | Mairs & Power Inc | 2,020 | $355K | 0.00% | 2025-12-31 |
| 9 | Torray Funds | Torray Investment Partners LLC | 1,221 | $235K | 0.03% | 2025-09-30 |
| 10 | Lee Ainslie | Maverick Capital Ltd | 1,188 | $235K | 0.00% | 2024-03-31 |
| 11 | Chase Coleman | Tiger Global Management LLC | 605,000 | $80K | 0.70% | 2017-06-30 |
| 12 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 186 | $33K | 0.00% | 2025-12-31 |
As of the latest 13F window, 12 tracked superinvestors hold AMT. The largest disclosed position is Viking Global at $618.2M (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 AMT, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
