MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK)
CUSIP: 56155L108
Q3 2025 13F Holders as of 30 Sep 2025
- Type / Class
- Equity / Common Stock, $0.01 par value
- Shares outstanding
- 48,165,948
- Total 13F shares
- 36,061,179
- Share change
- -366,802
- Total reported value
- $82,580,792
- Price per share
- $2.29
- Number of holders
- 76
- Value change
- -$870,793
- Number of buys
- 31
- Number of sells
- 34
Quarterly Holders Quick Answers
What is CUSIP 56155L108?
CUSIP 56155L108 identifies TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value in SEC institutional holdings data.
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Recent filing periods for CUSIP 56155L108:
Top shareholders of TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| WEXFORD CAPITAL LP |
3/4/5
13F
|
Director, 10%+ Owner · Company |
46%
from 13F
|
22,030,872
|
$95,922,417 | — | 12 Mar 2024 | |
| GPOR Distribution Trust |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
9,829,548
|
$42,797,852 | — | 30 Jun 2021 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
9.5%
|
4,575,000
|
$12,810,000 | — | 30 Jun 2025 | |
| VALUEWORKS LLC |
13F
13D/G
|
Company |
5%
from 13D/G
|
2,389,031
|
$6,698,843 | — | 30 Jun 2025 | |
| Arty Straehla |
3/4/5
|
Chief Executive Officer, Director |
—
class O/S missing
|
1,013,899
|
$4,414,516 | — | 18 Dec 2023 | |
| BlackRock, Inc. |
13F
|
Company |
3.1%
|
1,469,099
|
$4,113,477 | — | 30 Jun 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.1%
|
993,914
|
$2,783,117 | — | 30 Jun 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2%
|
957,241
|
$2,680,274 | — | 30 Jun 2025 | |
| Mark E. Layton |
3/4/5
|
CFO and Secretary |
—
class O/S missing
|
418,985
|
$1,824,261 | — | 03 Mar 2023 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.2%
|
580,659
|
$1,626,013 | — | 30 Jun 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.85%
|
408,763
|
$1,144,536 | — | 30 Jun 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.73%
|
350,454
|
$981,271 | — | 30 Jun 2025 | |
| James D. Palm |
3/4/5
|
Director |
—
class O/S missing
|
240,144
|
$876,069 | — | 12 Jun 2024 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.4%
|
193,842
|
$542,758 | — | 30 Jun 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.39%
|
185,761
|
$520,131 | — | 30 Jun 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.38%
|
185,260
|
$518,729 | — | 30 Jun 2025 | |
| Empowered Funds, LLC |
13F
|
Company |
0.36%
|
174,454
|
$488,471 | — | 30 Jun 2025 | |
| CastleKnight Management LP |
13F
|
Company |
0.35%
|
167,433
|
$468,812 | — | 30 Jun 2025 | |
| Corey J. Booker |
3/4/5
|
Director |
—
class O/S missing
|
125,488
|
$435,443 | — | 22 Nov 2024 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.3%
|
146,482
|
$410,150 | — | 30 Jun 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.27%
|
132,172
|
$370,082 | — | 30 Jun 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.27%
|
132,145
|
$370,006 | — | 30 Jun 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.25%
|
122,552
|
$343,146 | — | 30 Jun 2025 | |
| Arthur L. Smith |
3/4/5
|
Director |
0.27%
|
130,034
|
$326,385 | -$213,050 | 22 May 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.24%
|
115,212
|
$322,594 | — | 30 Jun 2025 | |
| STIFEL FINANCIAL CORP |
13F
|
Company |
0.22%
|
105,869
|
$296,434 | — | 30 Jun 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.18%
|
87,198
|
$244,000 | — | 30 Jun 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.15%
|
70,674
|
$197,887 | — | 30 Jun 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.14%
|
66,548
|
$186,334 | — | 30 Jun 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.12%
|
57,436
|
$160,821 | — | 30 Jun 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.11%
|
53,601
|
$150,083 | — | 30 Jun 2025 | |
| NBC SECURITIES, INC. |
13F
|
Company |
0.09%
|
44,580
|
$124,000 | — | 30 Jun 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.09%
|
43,285
|
$122,000 | — | 30 Jun 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.09%
|
41,154
|
$115,231 | — | 30 Jun 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.08%
|
36,843
|
$103,161 | — | 30 Jun 2025 | |
| UBS Group AG |
13F
|
Company |
0.08%
|
36,671
|
$102,679 | — | 30 Jun 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.08%
|
36,662
|
$102,654 | — | 30 Jun 2025 | |
| Paul M. Jacobi |
3/4/5
|
Director |
—
class O/S missing
|
27,856
|
$101,621 | — | 12 Jun 2024 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.07%
|
31,804
|
$89,046 | — | 30 Jun 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.06%
|
29,433
|
$82,390 | — | 30 Jun 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.06%
|
28,563
|
$79,000 | — | 30 Jun 2025 | |
| NJ State Employees Deferred Compensation Plan |
13F
|
Company |
0.05%
|
24,000
|
$67,200 | — | 30 Jun 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.05%
|
21,851
|
$61,183 | — | 30 Jun 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.04%
|
17,268
|
$48,350 | — | 30 Jun 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.03%
|
15,568
|
$43,590 | — | 30 Jun 2025 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
0.03%
|
13,970
|
$39,116 | — | 30 Jun 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.03%
|
13,525
|
$37,870 | — | 30 Jun 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.03%
|
13,069
|
$36,593 | — | 30 Jun 2025 | |
| Penbrook Management LLC |
13F
|
Company |
0.03%
|
13,000
|
$36,400 | — | 30 Jun 2025 | |
| Archer Investment Corp |
13F
|
Company |
0.03%
|
12,200
|
$34,160 | — | 30 Jun 2025 |
Institutional Holders of MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK) as of Q3 2025
As of 30 Sep 2025,
MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK) was held by
76 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
36,061,179 shares.
The largest 10 holders included
WEXFORD CAPITAL LP, ADAGE CAPITAL PARTNERS GP, L.L.C., VALUEWORKS LLC, BlackRock, Inc., VANGUARD GROUP INC, DIMENSIONAL FUND ADVISORS LP, GEODE CAPITAL MANAGEMENT, LLC, STATE STREET CORP, BRIDGEWAY CAPITAL MANAGEMENT, LLC, and CITADEL ADVISORS LLC.
This page lists
76
institutional shareholders reporting positions in this security
for the Q3 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
65
Q3 2025 holders
76
Holder diff
11
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 Value $ | Q3 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.