MAMMOTH ENERGY SERVICES, INC.

PublicCIK: 1679268
TUSKNASDAQ
Location

OKLAHOMA CITY, OK

13F Filings

Institutional Holders

MAMMOTH ENERGY SERVICES, INC.TUSK— Latest position per institution from SEC 13F filings

15

Institutional holders

27.54M

Total shares held

89.98M

Estimated value

1.38M

Avg. position size

1

WEXFORD CAPITAL LP

CIK 1048462

Shares

12.07M

Value

39.23M

Filed

Jun 30, 2026

2

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 1165408

Shares

4.58M

Value

14.87M

Filed

Jun 30, 2026

3

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

1.41M

Value

4.63M

Filed

Jun 30, 2024

4

KANEN WEALTH MANAGEMENT LLC

CIK 1681614

Shares

1.32M

Value

4.34M

Filed

Jun 30, 2024

5

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

1.06M

Value

3.44M

Filed

Jun 30, 2026

6

VANGUARD GROUP INC

CIK 102909

Shares

1.02M

Value

1.89M

Filed

Dec 31, 2025

7

PEAPOD LANE CAPITAL LLC

CIK 2050979

Shares

807.80K

Value

2.63M

Filed

Jun 30, 2026

8

DIMENSIONAL FUND ADVISORS LP

CIK 354204

Shares

691.67K

Value

2.25M

Filed

Jun 30, 2026

9

CITADEL ADVISORS LLC

CIK 1423053

Shares

593.26K

Value

1.93M

Filed

Jun 30, 2026

10

EXENCIAL WEALTH ADVISORS, LLC

CIK 1576151

Shares

507.61K

Value

2.14M

Filed

Mar 31, 2023

11

JANE STREET GROUP, LLC

CIK 1595888

Shares

506.66K

Value

1.65M

Filed

Jun 30, 2026

12

BLACKROCK, INC.

CIK 2012383

Shares

407.98K

Value

1.33M

Filed

Jun 30, 2026

13

MARSHALL WACE, LLP

CIK 1318757

Shares

395.58K

Value

1.29M

Filed

Jun 30, 2026

14

JOHNS HOPKINS UNIVERSITY

CIK 1764756

Shares

387.36K

Value

1.26M

Filed

Jun 30, 2026

15

BRIDGEWAY CAPITAL MANAGEMENT, LLC

CIK 1107261

Shares

332.31K

Value

1.08M

Filed

Jun 30, 2026

16

RUSSELL INVESTMENTS GROUP, LTD.

CIK 1692234

Shares

317.37K

Value

1.03M

Filed

Jun 30, 2026

17

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

306.03K

Value

995.73K

Filed

Jun 30, 2026

18

RENAISSANCE TECHNOLOGIES LLC

CIK 1037389

Shares

292.28K

Value

949.91K

Filed

Jun 30, 2026

19

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 1164508

Shares

290.10K

Value

942.81K

Filed

Jun 30, 2026

20

INFORMED MOMENTUM CO LLC

CIK 1510989

Shares

244.51K

Value

2.11M

Filed

Dec 31, 2022

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.