Company · Ownership research

Solaris Energy Infrastructure, Inc. SEI

CIK 0001697500 · CUSIP 83418M103

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 83418M103 (SEI), not CUSIP 83418M953 (SEI), CUSIP 83418M903 (SEI), and does not merge CUSIPs.

This page lists the top 20 of 335 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$198.22M 4,311,968 shares	0.00%	-540.52K(-11.10%)Reduced	SEC filing ↗ Feb 12, 2026	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$133.94M 2,913,632 shares	0.00%	+248.76K(+9.30%)Added	SEC filing ↗ Jan 29, 2026	▾
03	Encompass Capital Advisors LLC CIK 1541901 · View history	$117.66M 2,559,543 shares	5.63%	-360.04K(-12.30%)Reduced	SEC filing ↗ Feb 17, 2026	▾
04	FMR LLC CIK 315066 · View history	$105.25M 2,289,564 shares	0.01%	+52.13K(+2.30%)Added	SEC filing ↗ Feb 17, 2026	▾
05	MORGAN STANLEY CIK 895421 · Amended · View history	$96.14M 2,091,364 shares	0.01%	+199.82K(+10.60%)Added	SEC filing ↗ May 27, 2026	▾
06	SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC CIK 1638555 · View history	$95.45M 2,076,324 shares	2.68%	+280.01K(+15.60%)Added	SEC filing ↗ Feb 17, 2026	▾
07	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$86.55M 1,882,847 shares	0.01%	+186.37K(+11.00%)Added	SEC filing ↗ Mar 25, 2026	▾
08	Situational Awareness LP CIK 2045724 · View history	$85.80M 1,866,500 shares	2.19%	+716.20K(+62.30%)Added	SEC filing ↗ Feb 11, 2026	▾
09	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$84.82M 1,845,050 shares	0.06%	+1.04M(+130.00%)Added	SEC filing ↗ Feb 17, 2026	▾
10	JANE STREET GROUP, LLC CIK 1595888 · View history	$75.44M 1,641,016 shares	0.09%	+596.97K(+57.20%)Added	SEC filing ↗ Feb 12, 2026	▾
11	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$67.41M 1,466,343 shares	0.03%	+1.40M(+2,120.70%)Added	SEC filing ↗ Feb 2, 2026	▾
12	Advent International, L.P. CIK 1034196 · View history	$58.10M 1,263,809 shares	1.20%	+256.91K(+25.50%)Added	SEC filing ↗ Feb 17, 2026	▾
13	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$57.36M 1,247,663 shares	0.01%	+25.12K(+2.10%)Added	SEC filing ↗ Feb 17, 2026	▾
14	VAN ECK ASSOCIATES CORP CIK 869178 · View history	$57.08M 1,241,719 shares	0.05%	-54.18K(-4.20%)Reduced	SEC filing ↗ Feb 13, 2026	▾
15	Driehaus Capital Management LLC CIK 938206 · View history	$56.44M 1,227,721 shares	0.38%	+266.17K(+27.70%)Added	SEC filing ↗ Feb 17, 2026	▾
16	STATE STREET CORP CIK 93751 · View history	$53.98M 1,174,197 shares	0.00%	+130.58K(+12.50%)Added	SEC filing ↗ Feb 13, 2026	▾
17	CITADEL ADVISORS LLC CIK 1423053 · View history	$53.53M 1,164,500 shares	0.04%	+978.18K(+525.00%)Added	SEC filing ↗ Feb 17, 2026	▾
18	Qube Research & Technologies Ltd CIK 1729829 · View history	$53.09M 1,154,864 shares	0.08%	+874.76K(+312.30%)Added	SEC filing ↗ Feb 17, 2026	▾
19	GW&K Investment Management, LLC CIK 1082917 · View history	$49.76M 1,082,458 shares	0.43%	-95.37K(-8.10%)Reduced	SEC filing ↗ Feb 11, 2026	▾
20	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$49.64M 1,079,931 shares	0.07%	+72.61K(+7.20%)Added	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 335 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

335

Cancelled or null records excluded

Disclosed shares

67,579,459

Not deduplicated across managers

Disclosed value

$3.11B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Solaris Energy Infrastructure, Inc. · Q4 2025

Explore all 335 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.