Who owns Power Solutions International (PSIX)
Which tracked institutional funds hold PSIX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PSIX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
PSIX’s largest tracked holder by dollar value, Point72 Asset Management, L.P., sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in PSIX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their PSIX positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Point72 Asset Management, L.P. added | 1,497,155 | $58M | 18.3% | 2026-Q2 |
| BlackRock, Inc. added | 818,968 | $32M | 10.0% | 2026-Q2 |
| Newtyn Management, LLC new | 600,890 | $23M | 7.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 340,634 | $13M | 4.2% | 2026-Q2 |
| Yunqi Capital Ltd new | 339,000 | $13M | 4.1% | 2026-Q2 |
| BARCLAYS PLC added | 311,110 | $12M | 3.8% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 296,812 | $12M | 3.6% | 2026-Q2 |
| OLP CAPITAL MANAGEMENT Ltd new | 283,940 | $11M | 3.5% | 2026-Q2 |
| Busey Bank | 220,000 | $9M | 2.7% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 216,235 | $8M | 2.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 206,942 | $8M | 2.5% | 2026-Q2 |
| STATE STREET CORP added | 184,855 | $7M | 2.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 147,333 | $6M | 1.8% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 146,750 | $6M | 1.8% | 2026-Q2 |
| Yiheng Capital Management, L.P. new | 133,500 | $5M | 1.6% | 2026-Q2 |
| Meros Investment Management, LP added | 129,266 | $5M | 1.6% | 2026-Q2 |
| MORGAN STANLEY trimmed | 113,003 | $4M | 1.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 108,961 | $4M | 1.3% | 2026-Q2 |
| Hel Ved Capital Management Ltd | 100,876 | $4M | 1.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 98,700 | $6M | 1.9% | 2026-Q2 |
| Valiant Capital Management, L.P. added | 81,674 | $3M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 74,796 | $3M | 0.9% | 2026-Q2 |
| Defiance ETFs, LLC added | 72,881 | $3M | 0.8% | 2026-Q2 |
| Tidal Investments LLC added | 72,447 | $3M | 0.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 70,150 | $3M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 68,591 | $3M | 0.8% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 63,068 | $2M | 0.8% | 2026-Q2 |
| LPL Financial LLC trimmed | 57,706 | $2M | 0.7% | 2026-Q2 |
| CITIGROUP INC added | 53,989 | $2M | 0.7% | 2026-Q2 |
| OnyxPoint Global Management LP trimmed | 53,458 | $2M | 0.7% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 52,017 | $2M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 50,986 | $2M | 0.6% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 45,761 | $2M | 0.6% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 45,707 | $2M | 0.6% | 2026-Q2 |
| Bridge City Capital, LLC added | 40,658 | $2M | 0.5% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 37,637 | $1M | 0.5% | 2026-Q2 |
| ExodusPoint Capital Management, LP new | 37,020 | $1M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 35,290 | $1M | 0.4% | 2026-Q2 |
| Man Group plc trimmed | 34,788 | $1M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 30,479 | $1M | 0.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 29,658 | $1M | 0.4% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 29,644 | $1M | 0.4% | 2026-Q2 |
| XTX Topco Ltd added | 27,479 | $1M | 0.3% | 2026-Q2 |
| Capstone Capital Management Ltd new | 26,718 | $1M | 0.3% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 26,201 | $1M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 25,845 | $1M | 0.3% | 2026-Q2 |
| Cetera Investment Advisers trimmed | 25,627 | $997K | 0.3% | 2026-Q2 |
| Kerrisdale Advisers, LLC added | 25,175 | $979K | 0.3% | 2026-Q2 |
| Persistent Asset Partners Ltd added | 21,864 | $850K | 0.3% | 2026-Q2 |
| Hennion & Walsh Asset Management, Inc. added | 21,546 | $838K | 0.3% | 2026-Q2 |
| De Lisle Partners LLP | 21,000 | $817K | 0.3% | 2026-Q2 |
| WORLD EQUITY GROUP, INC. added | 20,681 | $804K | 0.3% | 2026-Q2 |
| Freestone Grove Partners LP added | 20,286 | $789K | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 20,071 | $781K | 0.2% | 2026-Q2 |
| Brevan Howard Capital Management LP new | 19,608 | $763K | 0.2% | 2026-Q2 |
| Belpointe Asset Management LLC new | 18,795 | $731K | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 17,835 | $694K | 0.2% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 17,762 | $691K | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 17,300 | $673K | 0.2% | 2026-Q2 |
| ARGA Investment Management, LP | 16,238 | $631K | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 16,126 | $627K | 0.2% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 15,072 | $586K | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 13,744 | $535K | 0.2% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC trimmed | 11,865 | $461K | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 10,534 | $410K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 10,328 | $402K | 0.1% | 2026-Q2 |
| NAVELLIER & ASSOCIATES INC trimmed | 10,224 | $398K | 0.1% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 9,760 | $380K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 9,744 | $379K | 0.1% | 2026-Q2 |
| CREDIT AGRICOLE S A | 9,500 | $369K | 0.1% | 2026-Q2 |
| Creative Planning added | 9,209 | $358K | 0.1% | 2026-Q2 |
| Bay Rivers Group trimmed | 9,141 | $355K | 0.1% | 2026-Q2 |
| ALPS ADVISORS INC added | 8,840 | $344K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 8,696 | $338K | 0.1% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. trimmed | 8,449 | $329K | 0.1% | 2026-Q2 |
| HORIZON KINETICS ASSET MANAGEMENT LLC added | 8,300 | $323K | 0.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 7,782 | $303K | 0.1% | 2026-Q2 |
| RITHOLTZ WEALTH MANAGEMENT trimmed | 7,532 | $293K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 7,105 | $277K | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 6,945 | $270K | 0.1% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC new | 6,812 | $265K | 0.1% | 2026-Q2 |
| CORSAIR CAPITAL MANAGEMENT, L.P. | 6,639 | $258K | 0.1% | 2026-Q2 |
| Legato Capital Management LLC added | 6,574 | $256K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 6,550 | $255K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 6,107 | $237K | 0.1% | 2026-Q2 |
| MML INVESTORS SERVICES, LLC trimmed | 6,087 | $237K | 0.1% | 2026-Q2 |
| D.A. DAVIDSON & CO. added | 6,051 | $235K | 0.1% | 2026-Q2 |
| Sequent Planning LLC trimmed | 5,973 | $232K | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 5,835 | $227K | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 5,639 | $219K | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 5,619 | $219K | 0.1% | 2026-Q2 |
| AlphaGrep UK Ltd added | 5,595 | $218K | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP new | 5,481 | $213K | 0.1% | 2026-Q2 |
| Inspire Advisors, LLC added | 5,380 | $209K | 0.1% | 2026-Q2 |
| Truvestments Capital LLC added | 5,347 | $208K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. trimmed | 5,221 | $203K | 0.1% | 2026-Q2 |
| INDEPENDENT FINANCIAL GROUP, LLC trimmed | 5,163 | $201K | 0.1% | 2026-Q2 |
| Triumph Capital Management added | 4,924 | $191K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC | 4,766 | $185K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 3,985 | $155K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.