Mammoth Energy Services, Inc. · NASDAQ:TUSK
Mammoth Energy Services, Inc. shareholders
As of Jun 30, 2026, 91 institutions reported holding Mammoth Energy Services, Inc., 54.2% of its shares. Largest: Wexford Capital LP, Adage Capital Partners Gp, L.L.C. and Vanguard. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Mammoth Energy Services, Inc. | Change | Filed |
|---|---|---|---|---|
| Wexford Capital LP | 12.1M | 25.1% | −10M | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | 4.58M | 9.5% | no change | Aug 14, 2026 |
| Vanguard | 1.23M | 2.6% | +232K | Aug 13, 2026 |
| Peapod Lane Capital LLC | 808K | 1.7% | +208K | Jul 27, 2026 |
| Dimensional | 692K | 1.4% | +5,468 | Aug 11, 2026 |
| Jane Street | 507K | 1.1% | +484K | Aug 14, 2026 |
| Citadel | 452K | 0.94% | +121K | Aug 14, 2026 |
| BlackRock | 408K | 0.85% | −1.05M | Aug 7, 2026 |
| Marshall Wace, LLP | 396K | 0.82% | new | Aug 13, 2026 |
| Johns Hopkins University | 387K | 0.80% | new | Aug 14, 2026 |