Power Solutions International, Inc. (PSIX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

23,061,000Shares Outstanding

6,948,202Shares held by institutions

$286,821,779Value of institutional holdings

30.13%Institutional ownership %

47.25%Shares Changed QoQ

192No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Power Solutions International, Inc. (NASDAQ:PSIX) has 191 institutional investors that have filed 13F reports for the period ending December 2025.

Collectively, these holders controlled 29.7% of Power Solutions International's outstanding shares in December 2025, up from 23.7% in September 2025.
They increased total shares held in PSIX by 46.26% quarter over quarter, and investors in Power Solutions International increased 478.79% from a year ago.
Activity in PSIX broke down as 142 buyers, 32 sellers, and 17 unchanged among 191 total holders.
Institutional investors collectively held 6.84Mn shares in Power Solutions International as of December 2025, up by 2.16Mn shares quarter on quarter, and up 4.52Mn shares year over year.
SG Americas Securities, LLC holds the largest position in PSIX at 216.4K shares as of December 31, 2025, or 0.94% of shares outstanding.
Leading buyers of Power Solutions International shares for the quarter ending December 2025 were SG Americas Securities, LLC (214.61K), OP Asset Management Ltd (47.75K), Capelight Capital Asset Management LP (15.0K), Formidable Asset Management, LLC (6.58K), North Star Investment Management Corp. (5.0K).
The largest sales of PSIX for the quarter ending December 2025 came from RITHOLTZ WEALTH MANAGEMENT (8.12K), State of Alaska, Department of Revenue (2.0K), Farther Finance Advisors, LLC (957), Spire Wealth Management (760), Stone House Investment Management, LLC (125).
Per Business Quant, the top 10 investors in PSIX for the quarter ending December 2025 include SG Americas Securities, LLC (216.4K), OP Asset Management Ltd (50.88K), Clear Creek Financial Management, LLC (15.68K), Capelight Capital Asset Management LP (15.0K), RITHOLTZ WEALTH MANAGEMENT (10.61K), Bay Rivers Group (9.19K), Formidable Asset Management, LLC (6.58K), Sequent Planning LLC (6.42K), State of Alaska, Department of Revenue (5.65K), North Star Investment Management Corp. (5.0K).

196 Institutional Holders

6,948,202 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	673,610	122,026	22.12%	$38,490,078.00
VANGUARD GROUP INC	31 Dec, 2025	539,978	37,597	7.48%	$30,854,344.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	443,096	118,011	36.30%	$25,318,505.00
Situational Awareness LP	31 Dec, 2025	432,300	432,300	0.00%	$24,701,622.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	328,761	122,672	59.52%	$20,228,665.00
DRIEHAUS CAPITAL MANAGEMENT LLC	31 Dec, 2025	229,120	94,618	70.35%	$13,091,917.00
ANTIPODES PARTNERS Ltd	31 Dec, 2025	228,413	228,413	0.00%	$13,052,497.00
Busey Bank	31 Dec, 2025	220,000	0	0.00%	$12,570,800.00
Goldman Sachs Group Inc	31 Dec, 2025	203,222	165,770	442.62%	$11,612,104.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	201,891	179,511	802.10%	$11,537,862.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	191,671	22,763	13.48%	$10,953,889.00
Morgan Stanley	31 Dec, 2025	174,754	-22,786	-11.53%	$9,985,443.00
State Street Corp	31 Dec, 2025	164,895	28,218	20.65%	$9,422,100.00
Qube Research & Technologies Ltd	31 Dec, 2025	114,249	114,249	0.00%	$6,528,188.00
Raymond James Financial Inc	31 Dec, 2025	109,548	18,909	20.86%	$6,259,573.00
Hel Ved Capital Management Ltd	31 Dec, 2025	108,126	39,406	57.34%	$6,178,320.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	107,898	1,400	1.31%	$6,165,292.00
Beacon Harbor Wealth Advisors, Inc.	31 Dec, 2025	103,216	103,216	0.00%	$5,897,762.00
NAVELLIER & ASSOCIATES INC	31 Dec, 2025	101,729	37,569	58.56%	$5,812,795.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	94,658	64,779	216.80%	$5,408,758.00

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