TUSK MAMMOTH ENERGY SERVICES, INC.: institutional ownership and insider trading
91 funds reported holding $86.1M of MAMMOTH ENERGY SERVICES, INC. in their latest 13F filings; in Q2 2026 funds net sold $28.8M, with 27 new positions and 23 funds selling out; over the last 12 months insiders bought $10.5M and sold $0 on the open market; over its last four quarters it reported revenue of $68.4M and net income of $713K.
TUSK revenue and earnings
- Quarter ended Jun 30, 2026: revenue $26.1M, net income −$760K, EPS -0.01
- Quarter ended Mar 31, 2026: revenue $22.0M, net income $5.19M, EPS 0.11
- Quarter ended Dec 31, 2025: revenue $5.51M, net income $8.90M, EPS 0.19
- Quarter ended Sep 30, 2025: revenue $14.8M, net income −$12.6M, EPS -0.26
Famous investors holding TUSK
- Ken Griffin (Citadel Advisors): $1.93M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $950K, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $404K, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $190K, 0.0% of the portfolio
Largest institutional holders of TUSK
- WEXFORD CAPITAL LP — $39.2M
- ADAGE CAPITAL PARTNERS GP, L.L.C. — $14.9M
- VANGUARD CAPITAL MANAGEMENT LLC — $3.44M
- DIMENSIONAL FUND ADVISORS LP — $2.25M
- Peapod Lane Capital LLC — $2.16M
- CITADEL ADVISORS LLC — $1.93M
- VANGUARD GROUP INC — $1.89M
- JANE STREET GROUP, LLC — $1.65M
- BlackRock, Inc. (BLK) — $1.33M
- MARSHALL WACE, LLP — $1.29M
Recent TUSK insider trades
- Sep 16, 2026: Plaumann Mark Lawrence bought 5,000 shares ($15.0K)
- Jun 17, 2026: Davidson Charles E bought 4,019,574 shares ($10.5M)
- Jun 12, 2026: Amron Arthur H bought 4,500 shares ($14.6K)
- May 28, 2026: Amron Arthur H bought 5,500 shares ($17.9K)
5%+ owners
- Wexford Capital LP: 25.1% (Schedule 13G/A, filed Jun 22, 2026)
- Charles E. Davidson: 13.4% (Schedule 13G, filed Jun 22, 2026)
Who owns the most TUSK stock?
The largest institutional holders of MAMMOTH ENERGY SERVICES, INC. in the latest 13F filings are WEXFORD CAPITAL LP ($39.2M), ADAGE CAPITAL PARTNERS GP, L.L.C. ($14.9M), VANGUARD CAPITAL MANAGEMENT LLC ($3.44M).
Are insiders buying or selling TUSK?
Over the last 12 months insiders bought $10.5M and sold $0 of MAMMOTH ENERGY SERVICES, INC. stock on the open market (SEC Form 4).
Which famous investors own TUSK?
Ken Griffin, Renaissance Technologies, Izzy Englander, Two Sigma.
What was TUSK's revenue last quarter?
MAMMOTH ENERGY SERVICES, INC. reported revenue of $26.1M for the quarter ended June 30, 2026, with net income of −$760K.