3 hedge funds and family offices disclose a BTU position in their latest SEC 13F filing — combined $122.1M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Lee Ainslie | Maverick Capital Ltd | 4,067,173 | $120.8M | 1.30% | 2025-12-31 |
| 2 | Ray Dalio | Bridgewater Associates LP | 40,777 | $1.3M | 0.01% | 2026-03-31 |
| 3 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 178 | $5K | 0.00% | 2025-12-31 |
As of the latest 13F window, 3 tracked superinvestors hold BTU. The largest disclosed position is Lee Ainslie at $120.8M (1.3% 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 BTU, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
3 hedge funds and family offices disclose a BTU position in their latest SEC 13F filing — combined $122.1M in market value.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Lee Ainslie | Maverick Capital Ltd | 4,067,173 | $120.8M | 1.30% | 2025-12-31 |
| 2 | Ray Dalio | Bridgewater Associates LP | 40,777 | $1.3M | 0.01% | 2026-03-31 |
| 3 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 178 | $5K | 0.00% | 2025-12-31 |
As of the latest 13F window, 3 tracked superinvestors hold BTU. The largest disclosed position is Lee Ainslie at $120.8M (1.3% 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 BTU, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
