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PSIX

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.

New
Increased
Maintained
Reduced
Closed

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)

Holders
126
Holders Change
+61
Holders Change %
+93.85%
% of All Funds
1.66%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
73
Increased
33
Reduced
17
Closed
12
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$15.2M
2
Vanguard Group
Vanguard Group
Pennsylvania
+$3.22M
3
Wells Fargo
Wells Fargo
California
+$3.16M
4
Geode Capital Management
Geode Capital Management
Massachusetts
+$2.89M
5
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$2.71M

Top Sellers

Rank Fund Capital Flow
1
PCM
Portolan Capital Management
Massachusetts
-$7.49M
2
GS
Gagnon Securities
New York
-$6.81M
3
Marshall Wace
Marshall Wace
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
RhumbLine Advisers
51
RhumbLine Advisers
Massachusetts
$610K +$350K +9,435 New
APA
52
Astoria Portfolio Advisors
New York
$572K +$237K +6,388 New
Susquehanna International Group
53
Susquehanna International Group
Pennsylvania
$529K -$3.68M -99,241 -92%
Northwestern Mutual Wealth Management
54
Northwestern Mutual Wealth Management
Wisconsin
$514K -$259 -7 -0.1%
VI
55
Vestcor Inc
New Brunswick, Canada
$436K +$208K +5,604 +493%
CW
56
CreativeOne Wealth
Kansas
$424K +$243K +6,548 New
Legal & General Group
57
Legal & General Group
United Kingdom
$361K +$207K +5,585 New
SEI Investments
58
SEI Investments
Pennsylvania
$349K +$200K +5,396 New
VF
59
Virtu Financial
New York
$344K -$354K -9,548 -64%
AAS
60
Avantax Advisory Services
Texas
$340K +$195K +5,253 New
ASN
61
Advisory Services Network
Georgia
$333K +$132K +3,552 New
CAM
62
Cozad Asset Management
Illinois
$332K +$190K +5,131 New
GWM
63
GK Wealth Management
Nevada
$329K +$188K +5,085 New
MA
64
Mutual Advisors
Nebraska
$327K +$134K +3,612 New
PWM
65
Perigon Wealth Management
California
$322K +$185K +4,979 New
DOA
66
D'Orazio & Associates
Virginia
$315K +$180K +4,868 New
AWA
67
Arete Wealth Advisors
Illinois
$307K +$176K +4,745 New
SWM
68
Spire Wealth Management
Virginia
$292K -$54.6K -1,473 -25%
AllianceBernstein
69
AllianceBernstein
Tennessee
$291K +$167K +4,500 New
SOW
70
State of Wyoming
Wyoming
$279K +$160K +4,312 New
Deutsche Bank
71
Deutsche Bank
Germany
$273K +$156K +4,219 New
Cambridge Investment Research Advisors
72
Cambridge Investment Research Advisors
Iowa
$263K +$151K +4,072 New
Invesco
73
Invesco
Georgia
$257K +$147K +3,968 New
DS
74
DRW Securities
Illinois
$256K +$147K +3,960 New
MIM
75
MetLife Investment Management
New Jersey
$255K +$146K +3,941 New
1 2
3
4 5

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.