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PSIX

Power Solutions International
PSIX

201 hedge funds and large institutions have $419M invested in Power Solutions International in 2026 Q1 according to their latest regulatory filings, with 55 funds opening new positions, 64 increasing their positions, 50 reducing their positions, and 43 closing their positions.

New
Increased
Maintained
Reduced
Closed

81% more call options, than puts

Call options by funds: $21.5M | Put options by funds: $11.9M

28% more repeat investments, than reductions

Existing positions increased: 64 | Existing positions reduced: 50

28% more first-time investments, than exits

New positions opened: 55 | Existing positions closed: 43

7% more capital invested

Capital invested by funds: $393M → $419M (+$26M)

4% more funds holding

Funds holding: 193 → 201 (+8)

0% more ownership

Funds ownership: 29.71% → 29.72% (+0%)

Holders
201
Holders Change
+8
Holders Change %
+4.15%
% of All Funds
2.47%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
% of All Funds
0.02%
New
55
Increased
64
Reduced
50
Closed
43
Calls
$21.5M
Puts
$11.9M
Net Calls
+$9.58M
Net Calls Change
+$8.26M

Top Buyers

1
SG Americas Securities
SG Americas Securities
New York
+$15.3M
2
Barclays
Barclays
United Kingdom
+$15.1M
3
DB
Danske Bank
Denmark
+$8.68M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$5.8M
5
OGM
OnyxPoint Global Management
New York
+$5.56M

Top Sellers

1
DCM
Driehaus Capital Management
Illinois
-$13.1M
2
AP
Antipodes Partners
Australia
-$12.5M
3
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$7.26M
4
Renaissance Technologies
Renaissance Technologies
New York
-$6.17M
5
BHWA
Beacon Harbor Wealth Advisors
Virginia
-$5.9M
Name Holding Trade Value Shares
Change 		Change in
Stake
DCM
201
Driehaus Capital Management
Illinois
– -$13.1M -229,120 Closed
Renaissance Technologies
202
Renaissance Technologies
New York
– -$6.17M -107,898 Closed
BHWA
203
Beacon Harbor Wealth Advisors
Virginia
– -$5.9M -103,216 Closed
Adage Capital Partners
204
Adage Capital Partners
Massachusetts
– -$4.29M -75,000 Closed
IAA
205
Independent Advisor Alliance
North Carolina
– -$3.08M -53,975 Closed
RL
206
Ruffer LLP
United Kingdom
– -$2.18M -38,063 Closed
Principal Financial Group
207
Principal Financial Group
Iowa
– -$1.39M -24,260 Closed
Verition Fund Management
208
Verition Fund Management
Connecticut
– -$1.33M -23,246 Closed
PIM
209
Platinum Investment Management
Australia
– -$1.14M -20,000 Closed
IMC Chicago
210
IMC Chicago
Illinois
– -$1.17M -16,436 Closed
Lazard Asset Management
211
Lazard Asset Management
New York
– -$720K -12,606 Closed
VSI
212
Verde Servicos Internacionais
Brazil
– -$696K -12,172 Closed
VF
213
Virtu Financial
New York
– -$675K -11,805 Closed
GC
214
Globeflex Capital
California
– -$594K -10,399 Closed
Janney Montgomery Scott
215
Janney Montgomery Scott
Pennsylvania
– -$565K -9,896 Closed
GWM
216
GK Wealth Management
Nevada
– -$556K -9,739 Closed
FRM
217
Fox Run Management
Connecticut
– -$521K -9,122 Closed
FGP
218
Freestone Grove Partners
California
– -$503K -8,803 Closed
WG
219
Winton Group
United Kingdom
– -$500K -8,743 Closed
APA
220
Astoria Portfolio Advisors
New York
– -$594K -6,712 Closed
PMAM
221
Picton Mahoney Asset Management
Ontario, Canada
– -$358K -6,263 Closed
QT
222
Quantbot Technologies
New York
– -$324K -5,665 Closed
Teacher Retirement System of Texas
223
Teacher Retirement System of Texas
Texas
– -$311K -5,440 Closed
EGM
224
Engineers Gate Manager
New York
– -$310K -5,432 Closed
SL
225
Sentinus LLC
Illinois
– -$286K -5,000 Closed
6 7 8
9
10

PSIX Hedge Fund Activity: Q1 2026 in Review

201 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Power Solutions International (PSIX) for Q1 2026, worth a combined $419M — up 6.6% from $393M a quarter earlier.

Buyers outnumbered sellers: 55 funds opened new PSIX positions and 43 closed out — a net gain of 12 holders — while 64 added to existing stakes and 50 trimmed.

The largest buyer was SG Americas Securities, adding an estimated $15.3M. The largest seller was Driehaus Capital Management, exiting entirely with an estimated $13.1M sold.

  • 201 institutional investors held Power Solutions International (PSIX) as of Q1 2026, up from 193 in Q4 2025.
  • Funds reported $419M of Power Solutions International stock for Q1 2026, up 6.6% quarter-over-quarter.
  • 55 funds opened new Power Solutions International positions in Q1 2026 and 43 closed out, a net change of +12 holders.
  • The largest Power Solutions International buyer in Q1 2026 was SG Americas Securities, an estimated $15.3M added.
  • The largest Power Solutions International seller in Q1 2026 was Driehaus Capital Management, an estimated $13.1M sold.

Based on aggregated 13F filings for Q1 2026.