Power Solutions International, Inc. (PSIX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

23,013,333Shares Outstanding

270,294Shares held by institutions

$25,361,686Value of institutional holdings

29.34%Institutional ownership %

49.85%Shares Changed QoQ

185No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Power Solutions International, Inc. (NASDAQ:PSIX) is held by 185 institutional firms.

The percentage of Power Solutions International owned by institutions changed from 23.8% in September 2025 to 29.3% in December 2025, marking a slight up trend.
Quarterly data indicates a 49.85% shift in institutional share volume, and the annual owner count reflects an increase of 460.61%.
A review of institutional activity for Power Solutions International shows 139 of 185 filers increasing their positions, while 29 reduced their stake, and 17 remained unchanged.
The total number of shares held by institutions in Power Solutions International increased to 6.75Mn as of December 2025, a net change of up by 2.25Mn shares quarter on quarter, and up 4.44Mn shares year over year.
BlackRock, Inc. continues to be the largest institutional holder of Power Solutions International as of December 31, 2025, with a position of 673.61K shares, representing 2.93% of the company's outstanding stock.
Among the most significant buyers of Power Solutions International during December 2025 were Situational Awareness LP (432.30K), ANTIPODES PARTNERS Ltd (228.41K), DIMENSIONAL FUND ADVISORS LP (179.51K), Allspring Global Investments Holdings, LLC (122.67K), BlackRock, Inc. (122.03K).
Leading sellers of Power Solutions International stock in December 2025 included SUSQUEHANNA INTERNATIONAL GROUP, LLP (118.79K), CITADEL ADVISORS LLC (67.35K), LAZARD ASSET MANAGEMENT LLC (34.85K), O'SHAUGHNESSY ASSET MANAGEMENT, LLC (23.57K), MORGAN STANLEY (22.79K).
The top 10 institutional holders of Power Solutions International for the quarter ending December 2025 included BlackRock, Inc. (673.61K), VANGUARD GROUP INC (539.98K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (443.10K), Situational Awareness LP (432.30K), Allspring Global Investments Holdings, LLC (328.76K), DRIEHAUS CAPITAL MANAGEMENT LLC (229.12K), ANTIPODES PARTNERS Ltd (228.41K), Busey Bank (220.00K), DIMENSIONAL FUND ADVISORS LP (201.89K), GEODE CAPITAL MANAGEMENT, LLC (191.67K).

185 Institutional Holders

270,294 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
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
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
GOLDMAN SACHS GROUP INC	31 Dec, 2025	101,611	64,159	171.31%	$5,806,052.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	94,658	64,779	216.80%	$5,408,758.00
LPL Financial LLC	31 Dec, 2025	86,581	439	0.51%	$4,947,238.00

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