We are live on ! Find out more
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
RWM
26
Ritholtz Wealth Management
New York
$2.64M +$37.7K +1,018 +3%
Millennium Management
27
Millennium Management
New York
$2.64M -$642K -17,337 -30%
SST
28
S Squared Technology
New York
$2.56M -$4.57M -123,460 -76%
BC
29
Burney Company
Virginia
$2.53M +$194K +5,248 +15%
MML Investors Services
30
MML Investors Services
Massachusetts
$1.94M +$332K +8,952 +42%
CCM
31
Corsair Capital Management
New York
$1.66M -$413K -11,132 -30%
TFS
32
Thoroughbred Financial Services
Tennessee
$1.54M +$74.8K +2,018 +9%
Cetera Investment Advisers
33
Cetera Investment Advisers
Illinois
$1.42M +$58.4K +1,575 +8%
TDC
34
Thompson Davis & Co
Virginia
$1.33M +$762K +20,550 New
Verition Fund Management
35
Verition Fund Management
Connecticut
$1.19M +$681K +18,373 New
GAM
36
Gotham Asset Management
New York
$1.18M +$676K +18,255 New
JF
37
Jump Financial
Illinois
$1.09M +$626K +16,900 New
PCM
38
Perritt Capital Management
Illinois
$933K -$21.5K -580 -4%
N
39
Nuveen
North Carolina
$927K +$531K +14,328 New
WEG
40
World Equity Group
Illinois
$922K +$180K +4,857 +52%
Russell Investments Group
41
Russell Investments Group
United Kingdom
$913K +$523K +14,121 New
Bank of New York Mellon
42
Bank of New York Mellon
New York
$877K +$503K +13,561 New
Barclays
43
Barclays
United Kingdom
$853K +$489K +13,184 New
CCFM
44
Clear Creek Financial Management
Washington
$829K +$475K +12,811 New
Commonwealth Equity Services
45
Commonwealth Equity Services
Massachusetts
$783K +$449K +12,107 New
OAC
46
OMERS Administration Corp
Ontario, Canada
$763K +$111K +3,000 +34%
DADC
47
D.A. Davidson & Co
Montana
$755K +$56.7K +1,530 +15%
Creative Planning
48
Creative Planning
Kansas
$687K +$394K +10,623 New
Acadian Asset Management
49
Acadian Asset Management
Massachusetts
$659K +$213K +5,745 +129%
Dimensional Fund Advisors
50
Dimensional Fund Advisors
Texas
$624K +$21.4K +578 +6%
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.