POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock (PSIX)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
PSIX on Nasdaq
Shares outstanding
23,099,349
Price per share
$57.14
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
5,445,615
Total reported value
$532,582,266
% of total 13F portfolios
0%
Share change
+1,961,525
Value change
+$200,130,267
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
200
Price from insider filings
$94.33
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock (PSIX) based on Schedule 13D/G filings

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
Gagnon Neil 5% $30,574,195 1,141,254 Neil Gagnon 05 Feb 2025
As of 30 Sep 2025, POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock (PSIX) has 200 institutional shareholders filing 13F forms. They hold 5,445,615 shares. of 23,099,349 outstanding shares (24%) .

Top 25 institutional shareholders own 16% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
BlackRock, Inc. 2.4% 551,584 +8.8% 0% $54,176,582
VANGUARD GROUP INC 2.2% 502,381 +39% 0% $49,343,862
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.4% 325,085 +344% 0.02% $31,929,849
Busey Bank 0.95% 220,000 0.6% $21,608,400
Allspring Global Investments Holdings, LLC 0.89% 206,089 0.03% $19,001,406
MORGAN STANLEY 0.86% 197,540 +284% 0% $19,402,380
Portolan Capital Management, LLC 0.85% 195,804 1% $19,231,869
GEODE CAPITAL MANAGEMENT, LLC 0.73% 168,908 +9.4% 0% $16,593,413
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.6% 138,448 +1591% 0.02% $13,598,362
STATE STREET CORP 0.59% 136,677 +75% 0% $13,424,415
Driehaus Capital Management LLC 0.58% 134,502 0.09% $13,210,786
RENAISSANCE TECHNOLOGIES LLC 0.46% 106,498 +89% 0.01% $10,460,234
Invesco Ltd. 0.43% 100,478 +2432% 0% $9,868,948
RAYMOND JAMES FINANCIAL INC 0.39% 90,639 +33% 0% $8,902,563
LPL Financial LLC 0.37% 86,142 +88% 0% $8,460,867
CITADEL ADVISORS LLC 0.36% 83,686 +12% 0.01% $8,219,639
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.3% 69,392 +46% 0% $6,815,682
Hel Ved Capital Management Ltd 0.3% 68,720 3.7% $6,749,678
NORTHERN TRUST CORP 0.28% 64,869 +36% 0% $6,371,433
GAGNON SECURITIES LLC 0.28% 64,770 -81% 1.3% $6,361,709
NAVELLIER & ASSOCIATES INC 0.28% 64,160 +47% 0.64% $6,301,795
KADENSA CAPITAL Ltd 0.26% 59,710 0.6% $5,864,716
Independent Advisor Alliance 0.24% 54,475 -0.13% 0.14% $5,350,535
O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.23% 53,804 -32% 0.03% $5,284,629
TWO SIGMA INVESTMENTS, LP 0.23% 52,769 -52% 0.01% $5,182,971

Institutional Holders of POWER SOLUTIONS INTERNATIONAL, INC. - Common Stock (PSIX) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q4 19,342 $1,105,323 +$341,301 5,714.01% 6
2025 Q3 5,445,615 $532,582,266 +$200,130,267 9,822% 200
2025 Q2 3,490,983 $226,177,204 +$49,249,211 6,468% 126
2025 Q1 3,138,009 $79,433,099 +$20,845,047 2,528% 65
2024 Q4 2,308,732 $68,730,985 +$982,915 2,975% 31
2024 Q3 2,277,246 $46,797,406 -$9,313,794 2,055% 4
2024 Q2 2,730,472 $17,379,454 +$300,180 636.5% 4
2024 Q1 2,683,311 $6,144,782 +$117,750 229% 4
2023 Q4 2,631,892 $5,395,378 -$29,155 205% 4
2023 Q3 2,646,114 $8,656,241 -$68,415 327% 4
2023 Q2 2,667,036 $7,467,700 -$81,077 280% 4
2023 Q1 2,695,992 $6,874,779 -$10,728 255% 4
2022 Q4 2,700,199 $8,100,597 +$207,639 300% 4
2022 Q3 2,630,986 $4,472,000 +$194,935 169.98% 3
2022 Q2 2,516,301 $4,369,000 +$4,278 174.97% 3
2022 Q1 2,513,856 $7,868,000 +$56,696 312.98% 3
2021 Q4 2,495,741 $7,487,000 +$21,038 299.98% 3
2021 Q3 2,488,728 $9,954,000 +$6,252 399.96% 3
2021 Q2 2,487,165 $15,171,000 +$25,260 609.97% 3
2021 Q1 2,483,024 $18,250,000 -$35,354 734.99% 3
2020 Q4 2,487,834 $8,210,000 +$202,382 330.01% 3
2020 Q3 2,426,508 $7,401,000 -$476 305% 3
2020 Q2 2,426,664 $9,706,000 +$1,093,112 399.96% 3
2020 Q1 2,153,370 $9,905,000 -$9,917 459.96% 3
2019 Q4 2,155,526 $17,029,000 +$1,369,615 790.06% 3
2019 Q3 1,982,150 $14,470,000 +$415,503 730% 3
2019 Q2 1,921,700 $18,736,000 +$706,168 974.97% 4
2019 Q1 1,849,274 $13,851,000 +$223,567 748.98% 4
2018 Q4 1,819,433 $16,829,000 +$7,556,054 924.96% 4
2018 Q3 1,002,534 $11,780,000 +$760,633 1,174.99% 3
2018 Q2 937,806 $9,003,000 +$600,238 960.01% 3
2018 Q1 875,279 $6,477,000 +$739,601 739.95% 3
2017 Q4 775,325 $5,815,000 -$162,559 749.98% 3
2017 Q3 796,170 $6,926,000 -$27,540 868.53% 4
2017 Q2 799,263 $7,113,000 -$24,044,064 889.24% 5
2017 Q1 3,166,164 $31,950,150 -$10,085,319 1,009.13% 37
2016 Q4 4,929,607 $36,982,658 -$1,936,525 750.1% 51
2016 Q3 5,123,221 $52,514,622 -$2,792,561 1,025.04% 52
2016 Q2 5,252,076 $93,749,568 +$2,086,280 1,785.04% 54
2016 Q1 5,178,445 $71,439,193 -$11,041,944 1,380% 57
2015 Q4 5,664,672 $103,379,899 -$10,757,447 1,825.02% 64
2015 Q3 6,008,670 $136,454,435 -$6,468,579 2,271.01% 74
2015 Q2 5,815,289 $314,137,111 +$13,383,391 5,402.02% 88
2015 Q1 5,500,556 $353,689,878 +$22,956,266 6,429.08% 86
2014 Q4 5,165,066 $266,566,553 -$2,769,465 5,161.14% 88
2014 Q3 5,070,473 $349,861,795 +$33,987,154 6,900% 91
2014 Q2 4,554,342 $327,036,887 +$41,456,283 7,197% 93
2014 Q1 4,036,034 $303,674,500 +$30,707,045 7,516.97% 90