PSIX
POWER SOLUTIONS INTERNATIONAL, INC.
Engines & TurbinesNasdaqNon-accelerated filer<br>Smaller reporting company
Total Trades
66
Buys
36
Sells
30
Largest Trade
$1M+
Insiders
7
Institutional Funds
157
Inst. Value
$1M+
Activist Filings
14
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 80K | $93.46 | Sep 15, 2025 |
| He Hong | Director | SELL | $100K–$500K | 3K | $94.40 | Sep 12, 2025 |
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 37K | $92.42 | Sep 12, 2025 |
| Xykis Constantine | CEO | SELL | $500K+ | 8K | $91.31 | Sep 11, 2025 |
| He Hong | Director | SELL | $100K–$500K | 4K | $91.44 | Sep 11, 2025 |
| He Hong | Director | SELL | $50K–$100K | 1K | $89.00 | Sep 10, 2025 |
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 94K | $83.28 | Aug 28, 2025 |
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 51K | $91.00 | Aug 27, 2025 |
| SIMPKINS FRANK P | Director | SELL | $500K+ | 10K | $91.64 | Aug 27, 2025 |
| Li Xun | CFO | BUY | $15K–$50K | 300 | $92.82 | Aug 27, 2025 |
| Li Xun | CFO | SELL | $500K+ | 8K | $92.36 | Aug 27, 2025 |
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 87K | $88.28 | Aug 26, 2025 |
| Weichai America Corp. | 10% Owner | SELL | $1M+ | 42K | $82.27 | Aug 25, 2025 |
| Winemaster Gary S | 10% Owner | SELL | $15K–$50K | 2K | $23.27 | Apr 16, 2025 |
| Winemaster Gary S | 10% Owner | SELL | $1M+ | 53K | $39.43 | Jan 27, 2025 |
| Winemaster Gary S | 10% Owner | SELL | $500K+ | 15K | $37.05 | Jan 17, 2025 |
| Winemaster Gary S | 10% Owner | SELL | $1M+ | 57K | $28.46 | Dec 30, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $500K+ | 25K | $31.62 | Dec 4, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $50K–$100K | 4K | $22.09 | Nov 7, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $100K–$500K | 5K | $25.21 | Oct 29, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $500K+ | 31K | $20.39 | Oct 1, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $100K–$500K | 11K | $20.03 | Sep 26, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $1M+ | 59K | $18.93 | Sep 25, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $50K–$100K | 4K | $12.88 | Jul 31, 2024 |
| Gagnon Neil | 10% Owner | BUY | $100K–$500K | 78K | $2.00 | May 2, 2024 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 9K | $2.00 | Apr 29, 2024 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 1K | $2.00 | Mar 26, 2024 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 5K | $2.00 | Mar 22, 2024 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 25K | $1.95 | Mar 1, 2024 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 976 | $2.00 | Feb 22, 2024 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 875 | $1.99 | Feb 13, 2024 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 348 | $1.87 | Jan 26, 2024 |
| Winemaster Gary S | 10% Owner | SELL | $100K–$500K | 40K | $3.00 | Sep 6, 2023 |
| Winemaster Gary S | 10% Owner | SELL | $15K–$50K | 10K | $3.00 | Aug 23, 2023 |
| Winemaster Gary S | 10% Owner | SELL | $15K–$50K | 15K | $3.15 | Aug 7, 2023 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 7K | $2.85 | May 26, 2023 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 200 | $2.95 | Apr 28, 2023 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 63 | $3.00 | Jan 30, 2023 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 500 | $3.00 | Jan 13, 2023 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 5K | $3.00 | Jan 11, 2023 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 6K | $3.00 | Jan 9, 2023 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 500 | $3.00 | Jan 5, 2023 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 256 | $3.00 | Dec 14, 2022 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 352 | $3.00 | Dec 5, 2022 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 82 | $3.00 | Dec 1, 2022 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 6K | $3.00 | Nov 30, 2022 |
| Gagnon Neil | 10% Owner | BUY | <$1K | 15 | $3.00 | Nov 28, 2022 |
| Winemaster Gary S | 10% Owner | SELL | $15K–$50K | 10K | $2.17 | Nov 25, 2022 |
| Gagnon Neil | 10% Owner | BUY | $1K–$15K | 2K | $2.88 | Nov 23, 2022 |
| Gagnon Neil | 10% Owner | BUY | $15K–$50K | 5K | $3.00 | Nov 22, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 157 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 443K | $1M+ | SH |
| Situational Awareness LP | 432K | $1M+ | SH |
| ANTIPODES PARTNERS Ltd | 228K | $1M+ | SH |
| Busey Bank | 220K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 197K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 168K | $1M+ | SH |
| STATE STREET CORP | 165K | $1M+ | SH |
| Hel Ved Capital Management Ltd | 108K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 108K | $1M+ | SH |
| RAYMOND JAMES FINANCIAL INC | 104K | $1M+ | SH |
| Beacon Harbor Wealth Advisors, Inc. | 103K | $1M+ | SH |
| NAVELLIER & ASSOCIATES INC | 102K | $1M+ | SH |
| LPL Financial LLC | 87K | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 81K | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 76K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 75K | $1M+ | SH |
| Point72 Asset Management, L.P. | 72K | $1M+ | SH |
| SEI INVESTMENTS CO | 62K | $1M+ | SH |
| Independent Advisor Alliance | 54K | $1M+ | SH |
| Cambridge Investment Research Advisors, Inc. | 42K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13D/A · Sep 22, 2025
6.3%
1.5M shares
SC 13D/A · Aug 28, 2025
46.5%
10.7M shares
SC 13D/A · Aug 25, 2025
47.5%
10.9M shares
SC 13D/A · Aug 19, 2025
48.7%
11.2M shares
SC 13D/A · Aug 15, 2025
49.8%
11.5M shares
SC 13D/A · Aug 7, 2025
8.4%
1.9M shares
SC 13D/A · Apr 23, 2025
9.5%
2.2M shares
SC 13G/A · Feb 14, 2025
5.0%
1.1M shares
SC 13G/A · Jan 23, 2025
7.3%
1.7M shares
SC 13G/A · Jan 23, 2025
7.3%
1.7M shares
SC 13G/A · Feb 13, 2024
6.1%
1.4M shares
SC 13D/A · Aug 7, 2023
14.5%
3.3M shares
SC 13G/A · Feb 1, 2022
5.7%
1.3M shares
SC 13G/A · Jan 12, 2022
5.7%
1.3M shares