Latest Period
Q1 2026
Security Snapshot
POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock, par value $0.001 per share (PSIX) Institutional Ownership
CUSIP: 73933G202
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
201
Shares (Excl. Options)
7,278,535
Price
$60.88
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- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Symbol
- PSIX on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 7,278,535
- Total 13F value
- $444,596,107
- Portfolio coverage rank
- 0%
- Share change
- +45,209
- Value change
- +$5,703,927
- Number of holders
- 201
- Shares outstanding
- 23,115,280
- SEC-reported price per share
- $45.11
- Insider filing price
- $45.11
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- PSIX - POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock, par value $0.001 per share is tracked under CUSIP 73933G202.
- 201 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 193 to 201 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $392,459,430 to $444,596,107.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 201 institutions filings for Q1 2026.
Security key
73933G202
Latest holder period
Q1 2026
13F holders
201
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
PSIX full holder history
POWER SOLUTIONS INTERNATIONAL, INC. SEC filings
POWER SOLUTIONS INTERNATIONAL, INC. company facts
POWER SOLUTIONS INTERNATIONAL, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 73933G202:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
PSIX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Weichai America Corp. | 46% | -2.1% | $944,628,799 | -$20,511,006 | 10,716,152 | -2.1% | Weichai America Corp. | 26 Aug 2025 |
| GAGNON SECURITIES LLC | 7.3% | $44,976,365 | 1,678,849 | Neil Gagnon | 31 Dec 2024 | |||
| Winemaster Gary S | 6.3% | -26% | $118,545,398 | -$38,726,410 | 1,455,259 | -25% | Gary S. Winemaster | 18 Sep 2025 |
| Point72 Asset Management, L.P. | 5% | $79,921,081 | 1,155,764 | Point72 Asset Management, L.P. | 21 May 2026 | |||
| Gagnon Neil | 5% | $30,574,195 | 1,141,254 | Neil Gagnon | 05 Feb 2025 |
As of 31 Mar 2026, 201 institutional investors reported holding 7,278,535 shares of POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock, par value $0.001 per share (PSIX). This represents 31% of the company’s total 23,115,280 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
23%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3.1% | 715,556 | +6.2% | 0% | $43,563,049 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2% | 466,204 | +5.2% | 0.02% | $28,382,500 |
| Situational Awareness LP | 1.9% | 432,300 | 0% | 0.68% | $26,318,424 |
| Situational Awareness Partners LP | 1.9% | 432,300 | 0% | 0.68% | $26,318,424 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.5% | 340,974 | 0% | 0% | $20,758,497 |
| Allspring Global Investments Holdings, LLC | 1.3% | 301,168 | -8.4% | 0.03% | $19,931,299 |
| DIMENSIONAL FUND ADVISORS LP | 1.2% | 283,241 | +40% | 0% | $17,239,500 |
| BARCLAYS PLC | 1% | 239,046 | +790% | 0.01% | $14,553,121 |
| Busey Bank | 0.95% | 220,000 | 0% | 0.36% | $13,393,600 |
| SG Americas Securities, LLC | 0.94% | 216,395 | +12037% | 0.01% | $13,174,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.85% | 196,297 | +2.4% | 0% | $11,952,238 |
| STATE STREET CORP | 0.74% | 170,747 | +3.5% | 0% | $10,395,077 |
| MORGAN STANLEY | 0.72% | 167,037 | -4.4% | 0% | $10,169,213 |
| LPL Financial LLC | 0.68% | 156,185 | +80% | 0% | $9,508,512 |
| DANSKE BANK A/S | 0.53% | 121,653 | 0.02% | $7,406,235 | |
| NAVELLIER & ASSOCIATES INC | 0.47% | 107,502 | +5.7% | 0.68% | $6,544,722 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.46% | 105,229 | 0% | 0% | $6,406,342 |
| Hel Ved Capital Management Ltd | 0.44% | 100,876 | -6.7% | 1.1% | $6,141,331 |
| MILLENNIUM MANAGEMENT LLC | 0.42% | 97,880 | +3.4% | 0% | $5,958,934 |
| Man Group plc | 0.38% | 88,667 | +230% | 0.01% | $5,398,047 |
| FIRST TRUST ADVISORS LP | 0.37% | 86,123 | +6.2% | 0% | $5,243,168 |
| NORTHERN TRUST CORP | 0.35% | 80,099 | +2.2% | 0% | $4,876,427 |
| OnyxPoint Global Management LP | 0.34% | 77,919 | 2% | $4,743,709 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.32% | 74,753 | -0.35% | 0% | $4,550,963 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | 0.31% | 72,630 | 0.02% | $4,421,714 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 7,278,535 | $444,596,107 | +$5,703,927 | $60.88 | 201 |
| 2025 Q4 | 6,842,241 | $392,459,430 | +$53,698,472 | $57.14 | 193 |
| 2025 Q3 | 5,445,787 | $532,599,160 | +$200,130,267 | $98.22 | 201 |
| 2025 Q2 | 3,490,983 | $226,177,204 | +$49,249,211 | $64.68 | 126 |
| 2025 Q1 | 3,138,009 | $79,433,099 | +$20,845,047 | $25.28 | 65 |
| 2024 Q4 | 2,308,732 | $68,730,985 | +$982,915 | $29.75 | 31 |
| 2024 Q3 | 2,277,246 | $46,797,406 | -$9,313,794 | $20.55 | 4 |
| 2024 Q2 | 2,730,472 | $17,379,454 | +$300,180 | $6.36 | 4 |
| 2024 Q1 | 2,683,311 | $6,144,782 | +$117,750 | $2.29 | 4 |
| 2023 Q4 | 2,631,892 | $5,395,378 | -$29,155 | $2.05 | 4 |
| 2023 Q3 | 2,646,114 | $8,656,241 | -$68,415 | $3.27 | 4 |
| 2023 Q2 | 2,667,036 | $7,467,700 | -$81,077 | $2.80 | 4 |
| 2023 Q1 | 2,695,992 | $6,874,779 | -$10,728 | $2.55 | 4 |
| 2022 Q4 | 2,700,199 | $8,100,597 | +$207,639 | $3.00 | 4 |
| 2022 Q3 | 2,630,986 | $4,472,000 | +$194,935 | $1.70 | 3 |
| 2022 Q2 | 2,516,301 | $4,369,000 | +$4,278 | $1.75 | 3 |
| 2022 Q1 | 2,513,856 | $7,868,000 | +$56,696 | $3.13 | 3 |
| 2021 Q4 | 2,495,741 | $7,487,000 | +$21,038 | $3.00 | 3 |
| 2021 Q3 | 2,488,728 | $9,954,000 | +$6,252 | $4.00 | 3 |
| 2021 Q2 | 2,487,165 | $15,171,000 | +$25,260 | $6.10 | 3 |
| 2021 Q1 | 2,483,024 | $18,250,000 | -$35,354 | $7.35 | 3 |
| 2020 Q4 | 2,487,834 | $8,210,000 | +$202,382 | $3.30 | 3 |
| 2020 Q3 | 2,426,508 | $7,401,000 | -$476 | $3.05 | 3 |
| 2020 Q2 | 2,426,664 | $9,706,000 | +$1,093,112 | $4.00 | 3 |
| 2020 Q1 | 2,153,370 | $9,905,000 | -$9,917 | $4.60 | 3 |