Mammoth Energy Services
TUSK
90 hedge funds and large institutions have $86M invested in Mammoth Energy Services in 2026 Q1 according to their latest regulatory filings, with 32 funds opening new positions, 24 increasing their positions, 23 reducing their positions, and 13 closing their positions.
146% more first-time investments, than exits
New positions opened: 32 | Existing positions closed: 13
35% more capital invested
Capital invested by funds: $63.8M → $86M (+$22.2M)
25% more funds holding
Funds holding: 72 → 90 (+18)
19% more call options, than puts
Call options by funds: $31K | Put options by funds: $26K
4% more repeat investments, than reductions
Existing positions increased: 24 | Existing positions reduced: 23
0.99% more ownership
Funds ownership: 71.52% → 72.51% (+0.99%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PLC
Peapod Lane Capital
Bedford Hills,
New York
|
+$1.37M |
| 2 |
Los Angeles Capital Management
Los Angeles,
California
|
+$372K |
| 3 |
Boston Partners
Boston,
Massachusetts
|
+$351K |
| 4 |
Goldman Sachs
New York
|
+$304K |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$253K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Russell Investments Group
London,
United Kingdom
|
-$408K |
| 2 |
Corient Private Wealth
Miami,
Florida
|
-$362K |
| 3 |
JP Morgan Chase
New York
|
-$354K |
| 4 |
Morgan Stanley
New York
|
-$319K |
| 5 |
BCM
Bridgeway Capital Management
Houston,
Texas
|
-$177K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
101
Royal Bank of Canada
Toronto,
Ontario, Canada
| – | -$2.5K | -1,099 | -100% |
|
|
AB
102
Amalgamated Bank
New York
| – | -$1K | -762 | Closed |
|
103
Northwestern Mutual Wealth Management
Milwaukee,
Wisconsin
| – | -$52 | -28 | Closed |
|
TUSK Hedge Fund Activity: Q1 2026 in Review
90 of the 8,127 institutional investors tracked by Wall St. Rank reported a position in Mammoth Energy Services (TUSK) for Q1 2026, worth a combined $86M — up 35% from $63.8M a quarter earlier.
Buyers outnumbered sellers: 32 funds opened new TUSK positions and 13 closed out — a net gain of 19 holders — while 24 added to existing stakes and 23 trimmed.
The largest buyer was Peapod Lane Capital, opening a new position worth an estimated $1.37M. The largest seller was Russell Investments Group, cutting an estimated $408K.
- 90 institutional investors held Mammoth Energy Services (TUSK) as of Q1 2026, up from 72 in Q4 2025.
- Funds reported $86M of Mammoth Energy Services stock for Q1 2026, up 35% quarter-over-quarter.
- 32 funds opened new Mammoth Energy Services positions in Q1 2026 and 13 closed out, a net change of +19 holders.
- The largest Mammoth Energy Services buyer in Q1 2026 was Peapod Lane Capital, an estimated $1.37M added.
- The largest Mammoth Energy Services seller in Q1 2026 was Russell Investments Group, an estimated $408K sold.
Based on aggregated 13F filings for Q1 2026.