Power Solutions International, Inc. (PSIX) shareholders
PSIXNasdaqEngines & TurbinesFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 16/3024% below fair value
$38.88−0.54 (-1.37%)
Close on Nov 13, 2026Market cap $896.79MP/E 12.7Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
36.4%
8M of 23M shares
Institutional holders
158
26 new, 68 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Weichai America Corp. Joint filing with Weichai Power Co., Ltd. (46.50%), Shandong Heavy Industry Group Co., Ltd. (46.50%) | 10,716,152 | 46.50% | 13D (active) amendment | Aug 26, 2025 |
| Steven A. Cohen Joint filing with Point72 Asset Management, L.P. (6.50%), Point72 Capital Advisors, Inc. (6.50%) | 1,497,155 | 6.50% | 13G (passive) amendment | Jun 30, 2026 |
| Gary S. Winemaster | 1,455,259 | 6.30% | 13D (active) amendment | Sep 18, 2025 |
| Point72 Asset Management, L.P. Joint filing with Point72 Capital Advisors, Inc. (5.00%), Steven A. Cohen (5.00%) | 1,155,764 | 5.00% | 13G (passive) | May 21, 2026 |
| Neil Gagnon | 1,141,254 | 5.00% | 13G (passive) amendment | Feb 5, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of PSIX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Point72 Asset Management, L.P. | 1,497,155 | 6.49% | $58.22M | +1,491,805 | 0.06% |
| BlackRock, Inc. | 818,968 | 3.55% | $31.85M | +103,412 | 0.00% |
| Newtyn Management, LLC | 600,890 | 2.61% | $23.37M | New | 2.92% |
| Vanguard Capital Management LLC | 340,634 | 1.48% | $13.25M | −340 | 0.00% |
| Yunqi Capital Ltd | 339,000 | 1.47% | $13.18M | New | 10.55% |
| Barclays PLC | 311,110 | 1.35% | $12.10M | +72,064 | 0.00% |
| Dimensional Fund Advisors LP | 296,812 | 1.29% | $11.54M | +13,571 | 0.00% |
| OLP CAPITAL MANAGEMENT Ltd | 283,940 | 1.23% | $11.04M | New | 2.76% |
| Busey Trust CO | 220,000 | 0.95% | $8.56M | – | 0.21% |
| Geode Capital Management, LLC | 216,235 | 0.94% | $8.41M | +19,938 | 0.00% |
| Millennium Management LLC | 206,942 | 0.90% | $8.05M | +109,062 | 0.00% |
| SG Americas Securities, LLC | 194,930 | 0.85% | $7.58M | −21,465 | 0.00% |
| State Street Corp | 184,855 | 0.80% | $7.19M | +14,108 | 0.00% |
| Goldman Sachs Group Inc | 147,333 | 0.64% | $5.73M | +103,027 | 0.00% |
| First Trust Advisors LP | 146,750 | 0.64% | $5.71M | +60,627 | 0.00% |
| Yiheng Capital Management, L.P. | 133,500 | 0.58% | $5.19M | New | 1.78% |
| Meros Investment Management, LP | 129,266 | 0.56% | $5.03M | +90,000 | 1.60% |
| Morgan Stanley | 113,003 | 0.49% | $4.39M | −54,034 | 0.00% |
| Two Sigma Investments, LP | 108,961 | 0.47% | $4.24M | +62,590 | 0.00% |
| Hel Ved Capital Management Ltd | 100,876 | 0.44% | $3.92M | – | 0.29% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 158 | 8M | 36.4% | 26 / 62 | 48 / 68 | 4M | 3M |
| Q1 2026 | 203 | 7M | 31.6% | 56 / 64 | 51 / 44 | 3M | 2M |
| Q4 2025 | 194 | 7M | 29.7% | 54 / 93 | 30 / 59 | 3M | 1M |
| Q3 2025 | 202 | 5M | 23.7% | 90 / 65 | 32 / 13 | 3M | 1M |
| Q2 2025 | 126 | 3M | 15.2% | 73 / 33 | 17 / 13 | 2M | 1M |
| Q1 2025 | 66 | 3M | 13.7% | 40 / 15 | 8 / 5 | 2M | 1M |
| Q4 2024 | 31 | 2M | 10.0% | 27 / 0 | 3 / 0 | 1M | 1M |
| Q3 2024 | 4 | 2M | 9.9% | 0 / 0 | 2 / 0 | 0M | 0M |
| Q2 2024 | 4 | 3M | 11.8% | 0 / 1 | 1 / 0 | 0M | 0M |
| Q1 2024 | 4 | 3M | 11.6% | 0 / 2 | 0 / 0 | 0M | 0M |
| Q4 2023 | 4 | 3M | 11.4% | 0 / 0 | 1 / 0 | 0M | 0M |
| Q3 2023 | 4 | 3M | 11.5% | 0 / 0 | 1 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
161 funds held PSIX in Q2 2026, 61% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of PSIX | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 256,749 | 1.11% | $9.98M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 227,365 | 0.99% | $8.84M | 0.01% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 94,611 | 0.41% | $2.61M | 0.01% | Jul 31, 2026 |
| Small Cap Core Portfolio | 79,900 | 0.35% | $3.11M | 0.36% | Jun 30, 2026 |
| iShares Russell 2000 Growth ETF | 76,561 | 0.33% | $2.98M | 0.02% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 75,598 | 0.33% | $2.94M | 0.00% | Jun 30, 2026 |
| Dimensional U.S. Small Cap ETF | 49,703 | 0.22% | $1.37M | 0.01% | Jul 31, 2026 |
| Defiance AI & Power Infrastructure ETF | 47,648 | 0.21% | $1.99M | 0.26% | May 31, 2026 |
| First Trust Small Cap Growth AlphaDEX Fund | 44,276 | 0.19% | $1.22M | 0.09% | Jul 31, 2026 |
| Vanguard Russell 2000 Index Fund | 43,828 | 0.19% | $1.83M | 0.01% | May 31, 2026 |
| Victory Small Cap Stock Fund | 42,979 | 0.19% | $1.19M | 0.12% | Jul 31, 2026 |
| Fidelity Extended Market Index Fund | 34,806 | 0.15% | $1.45M | 0.00% | May 31, 2026 |
| Schwab U.S. Small-Cap ETF | 31,949 | 0.14% | $1.33M | 0.01% | May 31, 2026 |
| iShares Micro-Cap ETF | 28,760 | 0.12% | $1.12M | 0.07% | Jun 30, 2026 |
| Dimensional U.S. Core Equity 2 ETF | 24,326 | 0.11% | $671.64K | 0.00% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Xun Li | CFO | 8,548 | 0.04% | Nov 13, 2026 |
| Nan (Richard) Hu | Chief Executive Officer | – | – | Aug 17, 2026 |
| Zhaoying Du | GC and Corp Secy | – | – | Apr 17, 2026 |
| Constantine Xykis | CEO | 26,839 | 0.12% | Sep 11, 2025 |
| Zhao Jin | Director | – | – | Jan 6, 2026 |
| Xuesen Yang | Director | – | – | Jan 6, 2026 |
| Frank P. Simpkins | Director | 30,000 | 0.13% | Dec 12, 2025 |
| Hong He | Director | 23,750 | 0.10% | Dec 12, 2025 |
| Courtney C. Shea | Director | 5,000 | 0.02% | Dec 12, 2025 |
| Kenneth W. Landini | Director | 59,000 | 0.26% | Dec 16, 2024 |
| America Corp. Weichai | 10% owner | 10,941,807 | 47.44% | Sep 15, 2025 |
| Weichai Power Co., Ltd. | 10% owner | 10,599,759 | 45.96% | Sep 15, 2025 |
| Shandong Heavy Industry Group Co., Ltd. | 10% owner | 10,733,686 | 46.54% | Sep 15, 2025 |
| Gary S. Winemaster | – | 2,184,790 | 9.47% | Apr 23, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Xun Li CFO | Nov 10, 2026 | Tax withholding | −3,544 | $37.72 | $133.68K | 8,548 |
| Xun Li CFO | Nov 10, 2026 | Option exercise | +7,500 | $2.00 | $15.00K | 12,092 |
| Xun Li CFO | Feb 12, 2026 | Tax withholding | −3,429 | $92.72 | $317.94K | 4,592 |
| Xun Li CFO | Feb 12, 2026 | Option exercise | +7,500 | $2.00 | $15.00K | 8,021 |
| Courtney C. Shea Director | Dec 11, 2025 | Award | +5,000 | – | – | 5,000 |
| Frank P. Simpkins Director | Dec 11, 2025 | Award | +5,000 | – | – | 30,000 |
| Hong He Director | Dec 11, 2025 | Award | +5,000 | – | – | 23,750 |
| Weichai Power Co., Ltd. 10% owner | Sep 11, 2025 | Sale | −30,519 | $94.33 | $2.88M | 10,599,759 |
| Weichai Power Co., Ltd. 10% owner | Sep 11, 2025 | Sale | −6,738 | $91.72 | $618.01K | 10,672,860 |
| Weichai Power Co., Ltd. 10% owner | Sep 11, 2025 | Sale | −19,351 | $92.46 | $1.79M | 10,653,509 |
| Weichai Power Co., Ltd. 10% owner | Sep 11, 2025 | Sale | −23,231 | $93.64 | $2.18M | 10,630,278 |
| Hong He Director | Sep 11, 2025 | Sale | −1,500 | $94.00 | $141.00K | 18,750 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −5,018 | $91.44 | $458.85K | 10,704,826 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −6,308 | $90.28 | $569.49K | 10,709,844 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −14,557 | $92.34 | $1.34M | 10,690,269 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −2,515 | $93.50 | $235.15K | 10,687,754 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −7,585 | $94.45 | $716.40K | 10,680,169 |
| Weichai Power Co., Ltd. 10% owner | Sep 10, 2025 | Sale | −571 | $95.20 | $54.36K | 10,679,598 |
| Hong He Director | Sep 10, 2025 | Sale | −1,000 | $95.00 | $95.00K | 20,250 |
| Constantine Xykis CEO | Sep 9, 2025 | Sale | −7,854 | $91.31 | $717.15K | 0 |
| Hong He Director | Sep 9, 2025 | Sale | −2,500 | $92.31 | $230.78K | 21,250 |
| Hong He Director | Sep 9, 2025 | Sale | −1,500 | $90.00 | $135.00K | 23,750 |
| Hong He Director | Sep 8, 2025 | Sale | −1,000 | $89.00 | $89.00K | 25,250 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −2,093 | $85.81 | $179.60K | 10,733,686 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −13,548 | $80.66 | $1.09M | 10,796,651 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −21,925 | $81.57 | $1.79M | 10,774,726 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −178 | $89.00 | $15.84K | 10,716,152 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −3,385 | $88.35 | $299.06K | 10,716,300 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −2,676 | $87.52 | $234.20K | 10,719,715 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −11,295 | $86.74 | $979.73K | 10,722,391 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −9,949 | $84.35 | $839.20K | 10,735,779 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −11,923 | $83.46 | $995.09K | 10,745,728 |
| Shandong Heavy Industry Group Co., Ltd. 10% owner | Aug 26, 2025 | Sale | −17,075 | $82.49 | $1.41M | 10,757,651 |
| Xun Li CFO | Aug 25, 2025 | Sale | −3,600 | $91.60 | $329.76K | 4,621 |
| Xun Li CFO | Aug 25, 2025 | Sale | −600 | $93.20 | $55.92K | 421 |
| Xun Li CFO | Aug 25, 2025 | Sale | −200 | $93.30 | $18.66K | 221 |
| Xun Li CFO | Aug 25, 2025 | Buy | +300 | $92.82 | $27.85K | 521 |
| Xun Li CFO | Aug 25, 2025 | Sale | −3,600 | $92.93 | $334.55K | 1,021 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −12,283 | $91.63 | $1.13M | 10,825,289 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −8,102 | $89.48 | $724.97K | 10,846,575 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −6,948 | $88.78 | $616.84K | 10,854,677 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −9,003 | $90.38 | $813.69K | 10,837,572 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −3,695 | $93.18 | $344.30K | 10,810,199 |
| Weichai Power Co., Ltd. 10% owner | Aug 25, 2025 | Sale | −11,395 | $92.56 | $1.05M | 10,813,894 |
| Frank P. Simpkins Director | Aug 25, 2025 | Sale | −10,000 | $91.64 | $916.40K | 25,000 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −3,720 | $82.45 | $306.71K | 10,941,807 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −3,308 | $81.57 | $269.83K | 10,945,527 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −3,921 | $83.60 | $327.80K | 10,937,886 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −1,665 | $84.74 | $141.09K | 10,936,221 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −4,521 | $85.40 | $386.09K | 10,931,700 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −3,979 | $86.34 | $343.55K | 10,927,721 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −13,323 | $91.20 | $1.22M | 10,861,625 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −19,228 | $90.52 | $1.74M | 10,874,948 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −11,263 | $89.52 | $1.01M | 10,894,176 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −9,988 | $88.46 | $883.54K | 10,905,439 |
| America Corp. Weichai 10% owner | Aug 22, 2025 | Sale | −12,294 | $87.57 | $1.08M | 10,915,427 |
| America Corp. Weichai 10% owner | Aug 21, 2025 | Sale | −20,729 | $82.46 | $1.71M | 10,956,261 |
| America Corp. Weichai 10% owner | Aug 21, 2025 | Sale | −2,647 | $80.41 | $212.85K | 10,988,502 |
| America Corp. Weichai 10% owner | Aug 21, 2025 | Sale | −11,512 | $81.70 | $940.53K | 10,976,990 |
| America Corp. Weichai 10% owner | Aug 21, 2025 | Sale | −7,426 | $83.26 | $618.29K | 10,948,835 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
15.96%
2M shares short
Days to cover
4.6
At 0M shares a day
Change since last report
-2.1%
From 2M shares
Short volume, 20 days
43.9%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Power Solutions International's stock actually held short. Settlement fails (shares not delivered on time) peaked at 4,938 shares on Sep 15, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Kenneth W. Landini Director | Sep 29, 2025 | 6,000 | $600.00K | Sep 18, 2025 | Preferred Stock Conversion |
| Kenneth W. Landini Director | Sep 29, 2025 | 3,500 | $371.00K | Sep 29, 2025 | Preferred Stock Conversion |
| Kenneth W. Landini Director | Sep 23, 2025 | 6,000 | $600.00K | Sep 18, 2025 | Preferred Stock Conversion |
| Hong He Director | Sep 11, 2025 | 1,500 | $141.00K | Sep 11, 2025 | Restricted stock vesting under a registered plan |
| Hong He Director | Sep 10, 2025 | 1,000 | $95.00K | Sep 10, 2025 | Restricted stock vesting under a registered plan |
| Hong He Director | Sep 9, 2025 | 4,000 | $365.77K | Sep 9, 2025 | Restricted stock vesting under a registered plan |
| Constantine Xykis Officer | Sep 9, 2025 | 7,854 | $662.80K | Sep 9, 2025 | Compensatory Grant from Issuer |
| Hong He Director | Sep 8, 2025 | 1,000 | $89.00K | Sep 8, 2025 | Restricted stock vesting under a registered plan |
| Kenneth W. Landini Director | Sep 5, 2025 | 7,000 | $595.00K | Sep 5, 2025 | Preferred Stock Conversion |
| Frank P. Simpkins Director | Aug 25, 2025 | 10,000 | $912.60K | Aug 25, 2025 | Compensatory grant from issuer |
| Xun Li Chief Financial Officer | Aug 25, 2025 | 8,221 | $750.25K | Aug 25, 2025 | Exercise of SARs |
| Hong He Director | Aug 13, 2025 | 2,500 | $225.07K | Aug 13, 2025 | Restricted stock vesting under a registered plan |
| Frank P. Simpkins Director | Aug 12, 2025 | 5,000 | $474.27K | Aug 12, 2025 | RSA |
| Constantine Xykis Officer | Aug 12, 2025 | 26,005 | $2.49M | Aug 12, 2025 | Compensatory Grant from Issuer |
| America Corp. Weichai 10% Stockholder | Aug 8, 2025 | 1,150,000 | $100.04M | Aug 12, 2025 | Privately Negotiated Transaction |
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