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PSIX

Power Solutions International
PSIX

65 hedge funds and large institutions have $79.4M invested in Power Solutions International in 2025 Q1 according to their latest regulatory filings, with 39 funds opening new positions, 15 increasing their positions, 8 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed

680% more first-time investments, than exits

New positions opened: 39 | Existing positions closed: 5

110% more funds holding

Funds holding: 31 → 65 (+34)

88% more repeat investments, than reductions

Existing positions increased: 15 | Existing positions reduced: 8

16% more capital invested

Capital invested by funds: $68.7M → $79.4M (+$10.7M)

3.6% more ownership

Funds ownership: 10.04% → 13.64% (+3.6%)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

Holders
65
Holders Change
+34
Holders Change %
+109.68%
% of All Funds
0.87%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
39
Increased
15
Reduced
8
Closed
5
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Vanguard Group
Vanguard Group
Pennsylvania
+$9.47M
2
Marshall Wace
Marshall Wace
United Kingdom
+$6.61M
3
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$3.7M
4
BlackRock
BlackRock
New York
+$3.29M
5
Citadel Advisors
Citadel Advisors
Florida
+$3.22M

Top Sellers

1
GS
Gagnon Securities
New York
-$11.2M
2
GA
Gagnon Advisors
New York
-$5.06M
3
SST
S Squared Technology
New York
-$4.48M
4
PCM
Portolan Capital Management
Massachusetts
-$1.55M
5
SSA
Schonfeld Strategic Advisors
New York
-$455K
Name Holding Trade Value Shares
Change 		Change in
Stake
TFS
26
Thoroughbred Financial Services
Tennessee
$550K +$391K +11,350 +109%
MML Investors Services
27
MML Investors Services
Massachusetts
$533K +$235K +6,819 +48%
LPL Financial
28
LPL Financial
California
$528K +$721K +20,900 New
Two Sigma Advisers
29
Two Sigma Advisers
New York
$526K +$717K +20,800 New
Cetera Investment Advisers
30
Cetera Investment Advisers
Illinois
$516K +$704K +20,403 New
Wells Fargo
31
Wells Fargo
California
$509K +$657K +19,045 +1,731%
Morgan Stanley
32
Morgan Stanley
New York
$468K +$490K +14,206 +330%
MHP
33
Manatuck Hill Partners
Connecticut
$441K -$117K -3,401 -16%
PCM
34
Perritt Capital Management
Illinois
$379K – – –
VF
35
Virtu Financial
New York
$376K +$513K +14,864 New
Tudor Investment Corp
36
Tudor Investment Corp
Connecticut
$312K +$426K +12,347 New
State Street
37
State Street
Massachusetts
$306K +$417K +12,100 New
Northern Trust
38
Northern Trust
Illinois
$281K +$384K +11,133 New
Balyasny Asset Management
39
Balyasny Asset Management
Illinois
$275K +$375K +10,868 New
DADC
40
D.A. Davidson & Co
Montana
$257K +$350K +10,150 New
WEG
41
World Equity Group
Illinois
$238K -$290K -8,399 -47%
Dimensional Fund Advisors
42
Dimensional Fund Advisors
Texas
$229K +$313K +9,070 New
OAC
43
OMERS Administration Corp
Ontario, Canada
$222K +$303K +8,800 New
EC
44
EntryPoint Capital
New York
$205K +$280K +8,119 New
Northwestern Mutual Wealth Management
45
Northwestern Mutual Wealth Management
Wisconsin
$201K +$241 +7 +0.1%
SWM
46
Spire Wealth Management
Virginia
$151K +$94.5K +2,741 +85%
Bank of America
47
Bank of America
North Carolina
$116K +$147K +4,253 +1,244%
Acadian Asset Management
48
Acadian Asset Management
Massachusetts
$112K +$154K +4,469 New
Royal Bank of Canada
49
Royal Bank of Canada
Ontario, Canada
$59K +$80.6K +2,336 New
JP Morgan Chase
50
JP Morgan Chase
New York
$57.5K +$78.5K +2,276 New
1
2
3

PSIX Hedge Fund Activity: Q1 2025 in Review

65 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Power Solutions International (PSIX) for Q1 2025, worth a combined $79.4M — up 16% from $68.7M a quarter earlier.

Buyers outnumbered sellers: 39 funds opened new PSIX positions and 5 closed out — a net gain of 34 holders — while 15 added to existing stakes and 8 trimmed.

The largest buyer was Vanguard Group, opening a new position worth an estimated $9.47M. The largest seller was Gagnon Securities, cutting an estimated $11.2M.

  • 65 institutional investors held Power Solutions International (PSIX) as of Q1 2025, up from 31 in Q4 2024.
  • Funds reported $79.4M of Power Solutions International stock for Q1 2025, up 16% quarter-over-quarter.
  • 39 funds opened new Power Solutions International positions in Q1 2025 and 5 closed out, a net change of +34 holders.
  • The largest Power Solutions International buyer in Q1 2025 was Vanguard Group, an estimated $9.47M added.
  • The largest Power Solutions International seller in Q1 2025 was Gagnon Securities, an estimated $11.2M sold.

Based on aggregated 13F filings for Q1 2025.