Solaris Energy Infrastructure, Inc. (SEI) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

38,278,947Shares Outstanding

780,532Shares held by institutions

$41,009,151Value of institutional holdings

176.27%Institutional ownership %

28.71%Shares Changed QoQ

324No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Solaris Energy Infrastructure, Inc. (NYSE:SEI) includes 324 filers as of the latest reporting cycle ending December 2025.

The collective stake of institutional investors in Solaris Energy Infrastructure moved to 176.3% in December 2025, a shift up from the 146.8% reported for September 2025.
The company experienced a 28.71% quarterly change in institutional shares held, alongside an increase of 80.00% in total owners annually.
A review of institutional activity for Solaris Energy Infrastructure shows 222 of 324 filers increasing their positions, while 81 reduced their stake, and 21 remained unchanged.
Collectively, institutional investors increased their stake in Solaris Energy Infrastructure to 67.47Mn shares as of December 2025, a change that is up by 15.05Mn shares quarter on quarter and up 32.30Mn shares year over year.
With 4.31Mn shares, BlackRock, Inc. commands the largest institutional position in Solaris Energy Infrastructure as of December 31, 2025, equating to 11.26% of the company.
Among the most significant buyers of Solaris Energy Infrastructure during December 2025 were PRINCIPAL FINANCIAL GROUP INC (1.40Mn), MILLENNIUM MANAGEMENT LLC (1.04Mn), HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND (1.02Mn), CITADEL ADVISORS LLC (978.18K), Value Aligned Research Advisors, LLC (975.94K).
Leading sellers of Solaris Energy Infrastructure stock in December 2025 included Point72 Asset Management, L.P. (1.05Mn), BRIGHTLINE CAPITAL MANAGEMENT, LLC (753.00K), SIR Capital Management, L.P. (598.93K), BlackRock, Inc. (540.52K), Encompass Capital Advisors LLC (360.04K).
The top 10 institutional holders of Solaris Energy Infrastructure for the quarter ending December 2025 included BlackRock, Inc. (4.31Mn), VANGUARD GROUP INC (2.91Mn), Encompass Capital Advisors LLC (2.56Mn), FMR LLC (2.29Mn), MORGAN STANLEY (2.09Mn), SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC (2.08Mn), GOLDMAN SACHS GROUP INC (1.88Mn), Situational Awareness LP (1.87Mn), JANE STREET GROUP, LLC (1.86Mn), MILLENNIUM MANAGEMENT LLC (1.85Mn).

324 Institutional Holders

780,532 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	4,311,968	-540,516	-11.14%	$198,221,180.00
VANGUARD GROUP INC	31 Dec, 2025	2,913,632	248,762	9.33%	$133,939,663.00
Encompass Capital Advisors LLC	31 Dec, 2025	2,559,543	-360,043	-12.33%	$117,662,192.00
FMR LLC	31 Dec, 2025	2,289,564	52,127	2.33%	$105,251,256.00
MORGAN STANLEY	31 Dec, 2025	2,091,364	199,825	10.56%	$96,140,032.00
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC	31 Dec, 2025	2,076,324	280,014	15.59%	$95,448,614.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,882,847	186,366	10.99%	$86,554,490.00
Situational Awareness LP	31 Dec, 2025	1,866,500	716,200	62.26%	$85,803,005.00
JANE STREET GROUP, LLC	31 Dec, 2025	1,864,016	518,574	38.54%	$85,688,816.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,845,050	1,042,902	130.01%	$84,816,948.00
PRINCIPAL FINANCIAL GROUP INC	31 Dec, 2025	1,466,343	1,400,311	2,120.66%	$67,407,787.00
ADVENT INTERNATIONAL, L.P.	31 Dec, 2025	1,263,809	256,909	25.51%	$58,097,300.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	1,247,663	25,121	2.05%	$57,355,067.00
VAN ECK ASSOCIATES CORP	31 Dec, 2025	1,241,719	-54,179	-4.18%	$57,081.00
DRIEHAUS CAPITAL MANAGEMENT LLC	31 Dec, 2025	1,227,721	266,174	27.68%	$56,438,334.00
STATE STREET CORP	31 Dec, 2025	1,174,197	130,576	12.51%	$53,977,836.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,164,500	978,183	525.01%	$53,532,065.00
Qube Research & Technologies Ltd	31 Dec, 2025	1,154,864	874,762	312.30%	$53,089,098.00
GW&K Investment Management, LLC	31 Dec, 2025	1,082,458	-95,372	-8.10%	$49,761.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	1,079,931	72,611	7.21%	$49,644,428.00

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