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Power Solutions International, Inc.

PSIX
Exchange
Nasdaq
Industry
Engines & Turbines
SEC CIK
0001137091

No open-market purchases or sales by Power Solutions International, Inc. insiders were filed in the last 90 days; 157 institutions reported holding it in 13F filings for Q2 2026, worth $328.5M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Power Solutions International, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of PSIX: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders1953204+12
Shares6.85M545.1K7.29M+978.9K (+15.5%)
Value$393.2M$31.1M$445.5M+$83.4M (+23.0%)

3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (56)

Institutions that held Power Solutions International, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to PSIX in Q1 2026
InstitutionSharesValue% of portfolio
Situational Awareness Partners LP432,300$26.3M0.68%
Vanguard Capital Management LLC340,974$20.8M0.00%
Danske Bank A/S121,653$7.41M0.02%
Vanguard Portfolio Management LLC105,229$6.41M0.00%
OnyxPoint Global Management LP77,919$4.74M2.01%
Voloridge Investment Management, LLC72,630$4.42M0.02%
CVFG LLC60,170$3.66M0.46%
Vanguard Fiduciary Trust Co48,690$2.96M0.00%
Meros Investment Management, LP39,266$2.39M1.04%
Jane Street Group, LLC32,796$2.00M0.00%
Bridge City Capital, LLC32,793$2.00M0.55%
Defiance ETFs, LLC20,868$1.27M0.02%
ARGA Investment Management, LP16,238$988.6K0.03%
Polymer Capital Management (HK) LTD16,000$974.1K0.14%
Capelight Capital Asset Management LP15,000$913.2K0.76%
Squarepoint Ops LLC13,586$827.1K0.00%
Oak Ridge Investments LLC13,307$810.1K0.05%
Swiss Life Asset Management Ltd5,404$754.3K0.00%
Kerrisdale Advisers, LLC11,665$710.2K0.27%
Kassira Wealth Management LLC9,549$581.3K0.53%
Independent Financial Group, LLC8,773$534.1K0.01%
Maxi Investments CY Ltd8,654$527.0K0.12%
Formidable Asset Management, LLC6,581$400.7K0.06%
Bridgefront Capital, LLC6,434$391.7K0.10%
CenterStar Asset Management, LLC6,250$379.9K0.37%
Cullen Capital Management LLC6,090$370.8K0.00%
Vanguard Asset Management, Ltd5,619$342.1K0.00%
D.A. Davidson & Co.5,294$322.3K0.00%
Legato Capital Management LLC5,197$316.4K0.03%
Horizon Kinetics Asset Management LLC5,000$304.4K0.00%
North Star Investment Management Corp.5,000$304.4K0.02%
Prelude Capital Management, LLC4,338$264.1K0.02%
Persistent Asset Partners Ltd4,295$261.5K0.10%
Mindset Wealth Management, LLC4,281$260.6K0.07%
Inspire Advisors, LLC4,042$246.1K0.02%
Vanguard Global Advisers, LLC3,926$239.0K0.00%
Diametric Capital, LP3,496$212.8K0.06%
Allstate Corp3,483$212.0K0.00%
Vanguard Investments Australia, Ltd.2,462$149.9K0.00%
M&G Plc2,254$137.5K0.00%
New York State Teachers Retirement System789$48.0K0.00%
Global Assets Advisory, LLC550$33.5K0.01%
KBC Group NV308$19.0K0.00%
Silver Grove Financial Group, Inc.300$18.3K0.01%
TD Waterhouse Canada Inc.115$7.61K0.00%
Farmers & Merchants Trust Co of Chambersburg PA120$7.00K0.00%
Northwestern Mutual Wealth Management Co83$5.05K0.00%
Geneos Wealth Management Inc.64$3.90K0.00%
Fifth Third Bancorp53$3.23K0.00%
HHM Wealth Advisors, LLC50$3.04K0.00%
Federation des caisses Desjardins du Quebec27$1.64K0.00%
Ronald Blue Trust, Inc.14$8520.00%
Parallel Advisors, LLC9$5480.00%
Root Financial Partners, LLC5$3040.00%
MAI Capital Management4$2440.00%
Covestor Ltd1$00.00%

Sold out (44)

Institutions that held Power Solutions International, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of PSIX in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Driehaus Capital Management LLC229,120$13.1M
Renaissance Technologies LLC107,898$6.17M
Beacon Harbor Wealth Advisors, Inc.103,216$5.90M
Adage Capital Partners GP, L.L.C.75,000$4.29M
Independent Advisor Alliance53,975$3.08M
Ruffer LLP38,063$2.18M
Principal Financial Group Inc24,260$1.39M
Verition Fund Management LLC23,246$1.33M
Platinum Investment Management Ltd20,000$1.14M
IMC-Chicago, LLC16,436$939.2K
Lazard Asset Management LLC12,606$720.3K
Verde Servicos Internacionais S.A.12,172$696.0K
Virtu Financial LLC11,805$675.0K
Globeflex Capital L P10,399$594.2K
Astoria Portfolio Advisors LLC.6,712$593.6K
Janney Montgomery Scott LLC9,896$565.0K
GK Wealth Management LLC9,739$556.5K
Fox Run Management, L.L.C.9,122$521.2K
Freestone Grove Partners LP8,803$503.0K
Winton Group Ltd8,743$499.6K
Picton Mahoney Asset Management6,263$357.9K
Quantbot Technologies LP5,665$323.7K
Teacher Retirement System of Texas5,440$310.8K
Engineers Gate Manager LP5,432$310.4K
Sentinus, LLC5,000$285.7K
Allianz Asset Management GmbH4,654$265.9K
Integrated Quantitative Investments LLC4,553$260.2K
Revisor Wealth Management LLC3,432$233.8K
Virginia Retirement Systems Et Al3,850$220.0K
PharVision Advisers, LLC3,843$219.6K
Simplex Trading, LLC3,802$217.2K
Meridian Wealth Management, LLC3,656$208.9K
Versor Investments LP3,600$205.7K
Quest Partners LLC3,113$177.9K
Caitong International Asset Management Co., Ltd3,026$172.9K
Public Employees Retirement System of Ohio1,343$76.7K
State of Wyoming853$48.7K
Quarry LP283$16.2K
Amalgamated Bank269$15.0K
Luminist Capital LLC200$11.4K
Darwin Advisors, LLC150$8.57K
Costello Asset Management, INC100$5.71K
CoreCap Advisors, LLC71$4.06K
Fortitude Family Office, LLC12$686

Not filed for Q1 2026 yet (3)

Institutions that held Power Solutions International, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding PSIX in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc539,978$30.9M
Perritt Capital Management Inc5,000$285.7K
Comerica Bank152$8.69K