Power Solutions International
Builds fuel-flexible engines and power systems for industrial, transportation and power-system markets.
$37.00
After-hours close+0.66 (+1.82%)
At close$36.34(−3.79%)
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Breakdown13F · Form 4
Institutions 38.34%8.84M sharesInsiders 0.27%63.3K sharesOther 61.39%14.15M shares
Shares outstanding 23.05M · Float 8.51M · 36.9% free float
A Form 4 total here can count shares the filer formally disclaims — an award voted by proxy, for instance — which the holder's own Schedule 13D/G excludes, so where the two disagree the schedule's smaller figure is used.
Institutions13F, as of Jun 30, 2026
165 holders · 8.84M shares · 28 new positions · 88 increased · 50 reduced · 72 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1.50M | 6.50% | +1.49M | Aug 14, 2026 |
| BlackRock, Inc. | 819.0K | 3.55% | +103.4K | Aug 7, 2026 |
| Newtyn Management, LLC | 600.9K | 2.61% | +600.9Knew | Aug 14, 2026 |
| Vanguard Capital Management LLC | 340.6K | 1.48% | −340 | Aug 13, 2026 |
| Yunqi Capital Ltd | 339.0K | 1.47% | +339.0Knew | Aug 5, 2026 |
| Barclays PLC | 311.1K | 1.35% | +72.1K | Aug 14, 2026 |
| Dimensional Fund Advisors LP | 296.8K | 1.29% | +13.6K | Aug 11, 2026 |
| Olp Capital Management Ltd | 283.9K | 1.23% | +283.9Knew | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Shandong Heavy Industry Group Co., Ltd.incl. Weichai Power Co., Ltd., Weichai America Corp. | 46.50% | 10.72M | 13D | Aug 28, 2025 ↗ |
| Gary S. Winemaster | 6.30% | 1.46M | 13D | Sep 22, 2025 ↗ |
| Point72 Asset Management, L.P. | 5.00% | 1.16M | 13G | May 22, 2026 ↗ |
| Neil Gagnon | 5.00% | 1.14M | 13G | Feb 14, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Weichai America Corp. | 10 percent owner | 10.60M | 45.99% | Sep 15, 2025 |
| Winemaster Gary S | other: former 10% owner | 1.46M | 6.31% | Apr 23, 2025 |
| Frank P. Simpkins | director | 30.0K | 0.13% | Dec 12, 2025 |
| Hong He | director | 23.8K | 0.10% | Dec 12, 2025 |
| Courtney C. Shea | director | 5.0K | 0.02% | Dec 12, 2025 |
| Xun Li | officer: CFO | 4.6K | 0.02% | Feb 17, 2026 |
3 ten-percent owners hold 12.08M shares by Form 4, outside the officers-and-directors figure above · 16 people have not refiled in the last 18 months (2.47M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 11, 2025 | Weichai America Corp.10 percent owner | Sale · 4 lots | 79,839 | $93.46 | 10,599,759 |
| Sep 10, 2025 | Weichai America Corp.10 percent owner | Sale · 6 lots | 36,554 | $92.42 | 10,679,598 |
| Sep 11, 2025 | Hong Hedirector | Sale | 1,500 | $94.00 | 18,750 |
| Sep 10, 2025 | Hong Hedirector | Sale | 1,000 | $95.00 | 20,250 |
| Sep 9, 2025 | Hong Hedirector | Sale · 2 lots | 4,000 | $91.44 | 21,250 |
| Sep 9, 2025 | Constantine Xykisofficer: CEO | Sale | 7,854 | $91.31 | 0 |
| Sep 8, 2025 | Hong Hedirector | Sale | 1,000 | $89.00 | 25,250 |
CongressHouse and Senate disclosures
Not reported.