MAMMOTH ENERGY SVCS INC (TUSK): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in TUSK · Energy. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
12
13F filers
Aggregate Value
$21.3M
Across holders
Last Price
$3.11
2026-08-24
Sector
Energy
GICS
Quarterly fund activity10 increased1 reduced1 exited
Full exits: Squarepoint Ops LLC
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 4.58M | $14.9M | 69.7% | 0.0% | Unchanged | +$0 | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 452K | $1.5M | 6.9% | 0.0% | Added | +$1.4M | Q2 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 396K | $1.3M | 6.0% | 0.0% | Added | — | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 292K | $950K | 4.5% | 0.0% | Added | +$196K | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 290K | $943K | 4.4% | 0.0% | Added | — | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 178K | $578K | 2.7% | 0.0% | Added | +$574K | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 124K | $404K | 1.9% | 0.0% | Added | — | Q2 2026 |
| Point72 Asset Management, L.P. CIK 0001603466 | Hedge Fund | 72K | $234K | 1.1% | 0.0% | Added | — | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 59K | $191K | 0.9% | 0.0% | Added | — | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 59K | $190K | 0.9% | 0.0% | Added | — | Q2 2026 |
Unchanged
Hedge Fund
$14.9M· 69.7% of total· 0.0% port· 4.58M sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$1.5M· 6.9% of total· 0.0% port· 452K sh· +$1.4M QoQ· Q2 2026
Added
Hedge Fund
$1.3M· 6.0% of total· 0.0% port· 396K sh· — QoQ· Q2 2026
Added
Hedge Fund
$950K· 4.5% of total· 0.0% port· 292K sh· +$196K QoQ· Q2 2026
Added
Hedge Fund
$943K· 4.4% of total· 0.0% port· 290K sh· — QoQ· Q2 2026
Added
Hedge Fund
$578K· 2.7% of total· 0.0% port· 178K sh· +$574K QoQ· Q2 2026
Added
Hedge Fund
$404K· 1.9% of total· 0.0% port· 124K sh· — QoQ· Q2 2026
Added
Hedge Fund
$234K· 1.1% of total· 0.0% port· 72K sh· — QoQ· Q2 2026
Added
Hedge Fund
$191K· 0.9% of total· 0.0% port· 59K sh· — QoQ· Q2 2026
Added
Hedge Fund
$190K· 0.9% of total· 0.0% port· 59K sh· — QoQ· Q2 2026
Added
Hedge Fund
$160K· 0.7% of total· 0.0% port· 49K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$55K· 0.3% of total· 0.0% port· 17K sh· $-5K QoQ· Q2 2026
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