Power Solutions International, Inc. (PSIX) ownership: Top institutional holder: BlackRock, Inc. ($43.56M). Insider activity: Net Seller (1 buys, 4 sells). 7 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 715556.00 | $43.56M | 2026-03-31 |
| VANGUARD GROUP INC | 539978.00 | $30.85M | 2025-12-31 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 466204.00 | $28.38M | 2026-03-31 |
| Situational Awareness LP | 432300.00 | $26.32M | 2026-03-31 |
| Situational Awareness Partners LP | 432300.00 | $26.32M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 340974.00 | $20.76M | 2026-03-31 |
| Allspring Global Investments Holdings, LLC | 301168.00 | $19.93M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 283241.00 | $17.24M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-03-06 | |
| Sell | null | 2026-03-06 | |
| Sell | null | 2026-02-12 | |
| Buy | null | 2026-02-12 | |
| Sell | null | 2026-02-12 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.