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PSIX

Power Solutions International
PSIX

203 hedge funds and large institutions have $533M invested in Power Solutions International in 2025 Q3 according to their latest regulatory filings, with 91 funds opening new positions, 65 increasing their positions, 32 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

600% more first-time investments, than exits

New positions opened: 91 | Existing positions closed: 13

136% more capital invested

Capital invested by funds: $226M → $533M (+$307M)

103% more repeat investments, than reductions

Existing positions increased: 65 | Existing positions reduced: 32

61% more funds holding

Funds holding: 126 → 203 (+77)

10% more call options, than puts

Call options by funds: $21.3M | Put options by funds: $19.3M

8.5% more ownership

Funds ownership: 15.17% → 23.67% (+8.5%)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

Holders
203
Holders Change
+77
Holders Change %
+61.11%
% of All Funds
2.66%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
91
Increased
65
Reduced
32
Closed
13
Calls
$21.3M
Puts
$19.3M
Net Calls
+$1.99M
Net Calls Change
+$1.99M

Top Buyers

Rank Fund Capital Flow
1
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$22.3M
2
BB
Busey Bank
Illinois
+$19.5M
3
Allspring Global Investments
Allspring Global Investments
North Carolina
+$18.3M
4
PCM
Portolan Capital Management
Massachusetts
+$17.4M
5
Morgan Stanley
Morgan Stanley
New York
+$13M

Top Sellers

Rank Fund Capital Flow
1
GS
Gagnon Securities
New York
-$24.5M
2
GA
Gagnon Advisors
New York
-$11.7M
3
Wells Fargo
Wells Fargo
California
-$6.2M
4
Two Sigma Investments
Two Sigma Investments
New York
-$5.08M
5
SST
S Squared Technology
New York
-$2.56M
Name Holding Trade Value Shares
Change 		Change in
Stake
PCM
126
Prelude Capital Management
New York
$354K +$319K +3,600 New
T. Rowe Price Associates
127
T. Rowe Price Associates
Maryland
$341K +$17K +192 +6%
MG
128
Marex Group
$320K +$288K +3,253 New
HWAM
129
Hennion & Walsh Asset Management
New Jersey
$311K +$281K +3,166 New
Mirae Asset Global ETFs Holdings
130
Mirae Asset Global ETFs Holdings
Hong Kong
$299K -$48.6K -548 -15%
TI
131
Tidal Investments
Wisconsin
$297K +$268K +3,023 New
CB
132
Commerce Bank
Missouri
$295K +$266K +3,000 New
UBS AM
133
UBS AM
Illinois
$295K +$266K +3,000 New
IIM
134
INTECH Investment Management
Florida
$291K -$33.9K -382 -11%
MA
135
Mutual Advisors
Nebraska
$288K -$3.1K -35 -1%
TC
136
Truvestments Capital
Florida
$287K +$259K +2,925 New
BWM
137
Baron Wealth Management
Michigan
$286K +$258K +2,909 New
Janus Henderson Group
138
Janus Henderson Group
United Kingdom
$285K +$257K +2,903 New
CFD
139
Creative Financial Designs
Indiana
$284K +$81.1K +915 +46%
HighTower Advisors
140
HighTower Advisors
Illinois
$283K +$255K +2,881 New
VI
141
Versor Investments
New York
$275K +$249K +2,803 New
SG
142
StoneX Group
New York
$268K +$242K +2,727 New
JP Morgan Chase
143
JP Morgan Chase
New York
$264K -$36.2K -408 -13%
QC
144
Quadrature Capital
United Kingdom
$259K +$234K +2,637 New
CWM
145
Cornerstone Wealth Management
Missouri
$255K +$231K +2,600 New
AWA
146
Adapt Wealth Advisors
Georgia
$246K +$222K +2,505 New
CWM
147
Cadence Wealth Management
Massachusetts
$246K +$222K +2,500 New
SAI
148
Savvy Advisors Inc
New York
$242K +$219K +2,466 New
TDC
149
Thompson Davis & Co
Virginia
$236K -$1.61M -18,150 -88%
New York State Common Retirement Fund
150
New York State Common Retirement Fund
New York
$206K – – –
4 5
6
7 8

PSIX Hedge Fund Activity: Q3 2025 in Review

203 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Power Solutions International (PSIX) for Q3 2025, worth a combined $533M — up 136% from $226M a quarter earlier.

Buyers outnumbered sellers: 91 funds opened new PSIX positions and 13 closed out — a net gain of 78 holders — while 65 added to existing stakes and 32 trimmed.

The largest buyer was Arrowstreet Capital, adding an estimated $22.3M. The largest seller was Gagnon Securities, cutting an estimated $24.5M.

  • 203 institutional investors held Power Solutions International (PSIX) as of Q3 2025, up from 126 in Q2 2025.
  • Funds reported $533M of Power Solutions International stock for Q3 2025, up 136% quarter-over-quarter.
  • 91 funds opened new Power Solutions International positions in Q3 2025 and 13 closed out, a net change of +78 holders.
  • The largest Power Solutions International buyer in Q3 2025 was Arrowstreet Capital, an estimated $22.3M added.
  • The largest Power Solutions International seller in Q3 2025 was Gagnon Securities, an estimated $24.5M sold.

Based on aggregated 13F filings for Q3 2025.