Solaris Energy Infrastructure SEI Institutional Ownership

NYSE SEI

$69.41 +6.07 (+9.58%)

As of: Oct 21, 2026 · 3:59 PM EDT

Institutions by Trading Activity

428 Institutions

Increased 273 63.8%

Unchanged 33 7.7%

Reduced 122 28.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

92.64%

▲+5.59 pp QoQ

Shares Held by Institutions

70.93Mn

of 76.57Mn outstanding

▲+10.88% QoQ

Shares Outstanding

76.57Mn

5.63Mn held outside 13F filers

Institutional Investors

428

filed 13F for Jun 2026

▲+71 vs prior quarter

Net Shares Added (QoQ)

+6.96Mn

accumulated since last quarter

Value of Holdings

$4.49Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Solaris Energy Infrastructure, Inc. (NYSE:SEI) counted 428 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

Collectively, these holders controlled 92.64% of Solaris Energy Infrastructure's outstanding shares in Q2 2026, up from 87.06% in Q1 2026.
Total shares held in Solaris Energy Infrastructure rose 10.88% from Q1 2026, while the number of holders rose 105.77% from Q2 2025.
Of the 428 holders of SEI in Q2 2026, 273 added to their positions, 122 reduced their stakes and 33 left their positions unchanged.
The aggregate institutional position in Solaris Energy Infrastructure was 70.93Mn shares at the end of Q2 2026, up 6.96Mn from the prior quarter and up 24.76Mn from a year earlier.
As of June 30, 2026, the biggest holder of Solaris Energy Infrastructure was BlackRock, Inc. with 5.2Mn shares, or 6.80% of shares outstanding.
The largest position increases in SEI for Q2 2026 were by BlackRock, Inc. (+1.08Mn shares), Clearbridge Investments, LLC (+1.03Mn shares), Encompass Capital Advisors LLC (+769.6K shares), T. Rowe Price Associates Inc (+747K shares) and Neuberger Berman Group LLC (+669.74K shares).
Holders that trimmed the most shares of Solaris Energy Infrastructure in Q2 2026 while keeping a position were Millennium Management LLC (-2.02Mn shares), Jane Street Group, LLC (-1.52Mn shares), Marshall Wace, LLP (-1.04Mn shares), Van Eck Associates Corp (-475.79K shares) and Assenagon Asset Management S.A. (-352.33K shares).
Business Quant data shows the 10 biggest positions in Solaris Energy Infrastructure as of Q2 2026 were held by BlackRock, Inc. (5.2Mn shares), Encompass Capital Advisors LLC (2.52Mn shares), Vanguard Capital Management LLC (2.45Mn shares), Morgan Stanley (2.02Mn shares), Two Sigma Investments, LP (1.98Mn shares), Summit Partners Public Asset Management, LLC (1.69Mn shares), Jennison Associates LLC (1.69Mn shares), Valiant Capital Management, L.P. (1.6Mn shares), Driehaus Capital Management LLC (1.58Mn shares) and FMR LLC (1.58Mn shares).

Form 13F Holdings

429 Institutional Holders

Report period 30 Jun, 2026

Total shares held 70.93Mn

Of outstanding 92.64%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	5,204,415	6.80%	▲1,081,979	+26.25%	$418.75Mn
2	Encompass Capital Advisors LLC	0001541901	2,519,604	3.29%	▲769,604	+43.98%	$202.73Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,447,630	3.20%	▲407,179	+19.96%	$196.94Mn
4	Morgan Stanley	0000895421	2,024,283	2.64%	▲316,828	+18.56%	$162.87Mn
5	TWO SIGMA INVESTMENTS, LP	0001179392	1,979,861	2.59%	▲38,315	+1.97%	$159.30Mn
6	SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC	0001638555	1,692,838	2.21%	▼36,217	-2.09%	$136.21Mn
7	JENNISON ASSOCIATES LLC	0000053417	1,691,193	2.21%	▲511,457	+43.35%	$136.07Mn
8	Valiant Capital Management, L.P.	0001452689	1,604,346	2.10%	▲484,843	+43.31%	$129.09Mn
9	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	1,584,985	2.07%	▼43,189	-2.65%	$127.53Mn
10	FMR LLC	0000315066	1,581,402	2.07%	▼281,159	-15.10%	$127.24Mn
11	State Street Corp	0000093751	1,487,464	1.94%	▲132,118	+9.75%	$119.65Mn
12	VAN ECK ASSOCIATES CORP	0000869178	1,478,669	1.93%	▼475,786	-24.34%	$118.97Mn
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,352,450	1.77%	▲251,299	+22.82%	$108.84Mn
14	Goldman Sachs Group Inc	0000886982	1,278,618	1.67%	▲144,755	+12.77%	$102.88Mn
15	Ameriprise Financial Inc	0000820027	1,144,927	1.50%	▲419,904	+57.92%	$92.12Mn
16	Clearbridge Investments, LLC	0001348883	1,138,159	1.49%	▲1,026,595	+920.18%	$91.58Mn
17	Situational Awareness LP	0002045724	1,129,621	1.48%	▲24,070	+2.18%	$90.89Mn
18	Korea Investment CORP	0001441689	1,096,000	1.43%	▲425,486	+63.46%	$88.18Mn
19	ADVENT INTERNATIONAL, L.P.	0001034196	1,094,427	1.43%	▼146,935	-11.84%	$88.06Mn
20	Principal Financial Group Inc	0001126328	1,072,200	1.40%	▼72,452	-6.33%	$86.27Mn

Showing 1 to 20 of 429 holders