Mammoth Energy Services Inc (TUSK)
Industrials
Conglomerates
2.70 $
+1.9%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Mammoth Energy Services Inc (TUSK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 74.9% of the shares are freely tradable; institutional investors hold 52.3%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
52.3%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
15.7%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
74.9%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
3.2%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
48Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Wexford Capital LP | 45.81 | 22,068,212 | -0.1 | 03/31/2026 |
| Adage Capital Partners Gp LLC | 9.50 | 4,575,000 | +0.0 | 03/31/2026 |
| BlackRock Inc | 3.02 | 1,454,839 | -1.2 | 03/31/2026 |
| Vanguard Group Inc | 2.12 | 1,022,411 | +8.1 | 12/31/2025 |
| Vanguard Capital Management, LLC | 1.70 | 819,120 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 1.42 | 686,199 | -1.9 | 03/31/2026 |
| Geode Capital Management, LLC | 1.27 | 610,926 | +4.3 | 03/31/2026 |
| Peapod Lane Capital LLC | 1.25 | 599,805 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.11 | 533,692 | +0.0 | 04/30/2026 |
| iShares Russell 2000 ETF | 1.04 | 501,026 | +0.9 | 05/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.