Power Solutions International
PSIX
126 hedge funds and large institutions have $226M invested in Power Solutions International in 2025 Q2 according to their latest regulatory filings, with 73 funds opening new positions, 33 increasing their positions, 17 reducing their positions, and 12 closing their positions.
508% more first-time investments, than exits
New positions opened: 73 | Existing positions closed: 12
185% more capital invested
Capital invested by funds: $79.4M → $226M (+$147M)
94% more repeat investments, than reductions
Existing positions increased: 33 | Existing positions reduced: 17
94% more funds holding
Funds holding: 65 → 126 (+61)
1.54% more ownership
Funds ownership: 13.64% → 15.17% (+1.5%)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$15.2M |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$3.22M |
| 3 |
Wells Fargo
San Francisco,
California
|
+$3.16M |
| 4 |
Geode Capital Management
Boston,
Massachusetts
|
+$2.89M |
| 5 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$2.71M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PCM
Portolan Capital Management
Boston,
Massachusetts
|
-$7.49M |
| 2 |
GS
Gagnon Securities
New York
|
-$6.81M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$6.65M |
| 4 |
GA
Gagnon Advisors
New York
|
-$5.3M |
| 5 |
SST
S Squared Technology
New York
|
-$4.57M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
HNB
126
Huntington National Bank
Columbus,
Ohio
| $65 | – | – | – |
|
|
PCM
127
Portolan Capital Management
Boston,
Massachusetts
| – | -$7.49M | -296,442 | Closed |
|
|
128
Marshall Wace
London,
United Kingdom
| – | -$6.65M | -263,124 | Closed |
|
129
Squarepoint
New York
| – | -$776K | -30,713 | Closed |
|
130
Man Group
London,
United Kingdom
| – | -$628K | -24,835 | Closed |
|
|
MHP
131
Manatuck Hill Partners
Westport,
Connecticut
| – | -$441K | -17,449 | Closed |
|
132
Tudor Investment Corp
Stamford,
Connecticut
| – | -$312K | -12,347 | Closed |
|
133
Balyasny Asset Management
Chicago,
Illinois
| – | -$275K | -10,868 | Closed |
|
|
EC
134
EntryPoint Capital
New York
| – | -$205K | -8,119 | Closed |
|
|
CA
135
CoreCap Advisors
Southfield,
Michigan
| – | -$20.2K | -800 | Closed |
|
|
PS
136
Principal Securities
Des Moines,
Iowa
| – | -$21K | -705 | Closed |
|
|
WPA
137
West Paces Advisors
Atlanta,
Georgia
| – | -$2.15K | -85 | Closed |
|
|
QCG
138
Quadrant Capital Group
Cincinnati,
Ohio
| – | -$456 | -18 | Closed |
|
PSIX Hedge Fund Activity: Q2 2025 in Review
126 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Power Solutions International (PSIX) for Q2 2025, worth a combined $226M — up 185% from $79.4M a quarter earlier.
Buyers outnumbered sellers: 73 funds opened new PSIX positions and 12 closed out — a net gain of 61 holders — while 33 added to existing stakes and 17 trimmed.
The largest buyer was BlackRock, adding an estimated $15.2M. The largest seller was Portolan Capital Management, exiting entirely with an estimated $7.49M sold.
- 126 institutional investors held Power Solutions International (PSIX) as of Q2 2025, up from 65 in Q1 2025.
- Funds reported $226M of Power Solutions International stock for Q2 2025, up 185% quarter-over-quarter.
- 73 funds opened new Power Solutions International positions in Q2 2025 and 12 closed out, a net change of +61 holders.
- The largest Power Solutions International buyer in Q2 2025 was BlackRock, an estimated $15.2M added.
- The largest Power Solutions International seller in Q2 2025 was Portolan Capital Management, an estimated $7.49M sold.
Based on aggregated 13F filings for Q2 2025.