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.
13F holders, Q1 2026
Institutional positions in Power Solutions International, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 204
- +12 vs. Q4 2025
- Shares held
- 7.29M
- +978.9K (+15.5%) vs. Q4 2025
- Total value
- $445.5M
- +$83.4M (+23.0%) vs. Q4 2025
- New holders
- 56
- 64 more added
- Sold out
- 44
- 51 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PSIX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 157 | $328.5M |
| Q1 2026 | 204 | $445.5M |
| Q4 2025 | 195 | $393.2M |
| Q3 2025 | 203 | $533.2M |
| Q2 2025 | 126 | $226.2M |
| Q1 2025 | 66 | $80.1M |
| Q4 2024 | 31 | $68.7M |
| Q3 2024 | 4 | $46.8M |
| Q2 2024 | 4 | $17.4M |
| Q1 2024 | 4 | $6.14M |
| Q4 2023 | 4 | $5.40M |
| Q3 2023 | 4 | $8.66M |
| Q2 2023 | 4 | $7.47M |
| Q1 2023 | 4 | $6.87M |
| Q4 2022 | 4 | $8.10M |
| Q3 2022 | 4 | $4.47M |
| Q2 2022 | 4 | $4.37M |
| Q1 2022 | 4 | $7.87M |
| Q4 2021 | 4 | $7.49M |
| Q3 2021 | 4 | $9.95M |
| Q2 2021 | 4 | $15.2M |
| Q1 2021 | 4 | $18.3M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Power Solutions International, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Situational Awareness LP | 432,300 | $26.3M | 0.68% | 00.0% | Unchanged |
| Situational Awareness Partners LP | 432,300 | $26.3M | 0.68% | +432,300 | New |
| Arrowstreet Capital, Limited Partnership | 466,204 | $28.4M | 0.02% | +23,108+5.2% | Added |
| BlackRock, Inc. | 715,556 | $43.6M | 0.00% | +41,946+6.2% | Added |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −229,120−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −107,898−100.0% | Sold out |
| Beacon Harbor Wealth Advisors, Inc. | 0 | $0 | 0.00% | −103,216−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Independent Advisor Alliance | 0 | $0 | 0.00% | −53,975−100.0% | Sold out |
| Ruffer LLP | 0 | $0 | 0.00% | −38,063−100.0% | Sold out |
| Principal Financial Group Inc | 0 | $0 | 0.00% | −24,260−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −23,246−100.0% | Sold out |
| Platinum Investment Management Ltd | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −16,436−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −12,606−100.0% | Sold out |
| Verde Servicos Internacionais S.A. | 0 | $0 | 0.00% | −12,172−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −11,805−100.0% | Sold out |
| Globeflex Capital L P | 0 | $0 | 0.00% | −10,399−100.0% | Sold out |
| Astoria Portfolio Advisors LLC. | 0 | $0 | 0.00% | −6,712−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −9,896−100.0% | Sold out |
| GK Wealth Management LLC | 0 | $0 | 0.00% | −9,739−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −9,122−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −8,803−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −8,743−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −6,263−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −5,665−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −5,440−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −5,432−100.0% | Sold out |
| Sentinus, LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −4,654−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −4,553−100.0% | Sold out |
| Revisor Wealth Management LLC | 0 | $0 | 0.00% | −3,432−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −3,850−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −3,843−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −3,802−100.0% | Sold out |
| Meridian Wealth Management, LLC | 0 | $0 | 0.00% | −3,656−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −3,600−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −3,113−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −3,026−100.0% | Sold out |
| Public Employees Retirement System of Ohio | 0 | $0 | 0.00% | −1,343−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −853−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −283−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −269−100.0% | Sold out |
| Luminist Capital LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Darwin Advisors, LLC | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| Costello Asset Management, INC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −71−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Perritt Capital Management Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |