2 hedge funds and family offices disclose a GTX position in their latest SEC 13F filing — combined $3.5M in market value. Of those, 1 are classified as value investors.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Prem Watsa | Fairfax Financial Holdings Ltd | 184,460 | $3.4M | 0.17% | 2026-03-31 |
| 2 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 8,015 | $140K | 0.02% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold GTX. The largest disclosed position is Prem Watsa at $3.4M (0.2% 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 GTX, 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 GTX position in their latest SEC 13F filing — combined $3.5M in market value. Of those, 1 are classified as value investors.
| # | Investor | Fund | Shares | Value | % of Portfolio | Filed |
|---|---|---|---|---|---|---|
| 1 | Prem Watsa | Fairfax Financial Holdings Ltd | 184,460 | $3.4M | 0.17% | 2026-03-31 |
| 2 | Christopher Bloomstran | Semper Augustus Investments Group LLC | 8,015 | $140K | 0.02% | 2025-12-31 |
As of the latest 13F window, 2 tracked superinvestors hold GTX. The largest disclosed position is Prem Watsa at $3.4M (0.2% 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 GTX, how concentrated each position is, and the implied conviction level relative to the rest of each investor's book.
Key takeaways
