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Solaris Energy Infrastructure, Inc.

SEI
Exchange
NYSE
Industry
Oil & Gas Field Machinery & Equipment
SEC CIK
0001697500

In the last 90 days, Solaris Energy Infrastructure, Inc. insiders filed 1 open-market purchase and 0 sales; 433 institutions reported holding it in 13F filings for Q2 2026, worth $5.71B in total; no superinvestor holds it.

13F holders, Q3 2026

Institutional positions in Solaris Energy Infrastructure, Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders
2
0 vs. Q2 2026
Shares held
624
+91 (+17.1%) vs. Q2 2026
Total value
$44.4K
+$1.53K (+3.6%) vs. Q2 2026
New holders
0
1 more added
Sold out
0
0 more reduced

431 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting SEI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders
Q1 2021: 112 institutionsQ2 2021: 111 institutionsQ3 2021: 107 institutionsQ4 2021: 108 institutionsQ1 2022: 121 institutionsQ2 2022: 134 institutionsQ3 2022: 128 institutionsQ4 2022: 128 institutionsQ1 2023: 117 institutionsQ2 2023: 100 institutionsQ3 2023: 119 institutionsQ4 2023: 140 institutionsQ1 2024: 132 institutionsQ2 2024: 129 institutionsQ3 2024: 135 institutionsQ4 2024: 179 institutionsQ1 2025: 200 institutionsQ2 2025: 213 institutionsQ3 2025: 272 institutionsQ4 2025: 335 institutionsQ1 2026: 363 institutionsQ2 2026: 433 institutions
Value held
Q1 2021: $282.7MQ2 2021: $224.0MQ3 2021: $184.2MQ4 2021: $157.4MQ1 2022: $287.5MQ2 2022: $267.4MQ3 2022: $224.7MQ4 2022: $239.4MQ1 2023: $196.4MQ2 2023: $182.1MQ3 2023: $230.1MQ4 2023: $191.7MQ1 2024: $214.8MQ2 2024: $202.4MQ3 2024: $304.9MQ4 2024: $1.01BQ1 2025: $890.9MQ2 2025: $1.35BQ3 2025: $2.21BQ4 2025: $3.11BQ1 2026: $3.69BQ2 2026: $5.71B
Institutions holding SEI and their total value by quarter
QuarterHoldersValue
Q2 2026433$5.71B
Q1 2026363$3.69B
Q4 2025335$3.11B
Q3 2025272$2.21B
Q2 2025213$1.35B
Q1 2025200$890.9M
Q4 2024179$1.01B
Q3 2024135$304.9M
Q2 2024129$202.4M
Q1 2024132$214.8M
Q4 2023140$191.7M
Q3 2023119$230.1M
Q2 2023100$182.1M
Q1 2023117$196.4M
Q4 2022128$239.4M
Q3 2022128$224.7M
Q2 2022134$267.4M
Q1 2022121$287.5M
Q4 2021108$157.4M
Q3 2021107$184.2M
Q2 2021111$224.0M
Q1 2021112$282.7M

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Solaris Energy Infrastructure, Inc.; share changes are against Q2 2026.

Institutions holding SEI in Q3 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Versant Capital Management, Inc529$37.7K0.00%00.0%Unchanged
Massmutual Trust Co FSB95$6.76K0.00%+91+2,275.0%Added
BlackRock, Inc.––––Not filed
Encompass Capital Advisors LLC––––Not filed
Vanguard Capital Management LLC––––Not filed
Morgan Stanley––––Not filed
Two Sigma Investments, LP––––Not filed
Summit Partners Public Asset Management, LLC––––Not filed
Jennison Associates LLC––––Not filed
Valiant Capital Management, L.P.––––Not filed
Driehaus Capital Management LLC––––Not filed
FMR LLC––––Not filed
State Street Corp––––Not filed
Van Eck Associates Corp––––Not filed
Geode Capital Management, LLC––––Not filed
Goldman Sachs Group Inc––––Not filed
Ameriprise Financial Inc––––Not filed
Clearbridge Investments, LLC––––Not filed
Situational Awareness LP––––Not filed
Korea Investment CORP––––Not filed
Advent International Corp––––Not filed
Principal Financial Group Inc––––Not filed
GW&K Investment Management, LLC––––Not filed
Neuberger Berman Group LLC––––Not filed
Wellington Management Group LLP––––Not filed
Dimensional Fund Advisors LP––––Not filed
UBS Group AG––––Not filed
Price T Rowe Associates Inc––––Not filed
Vanguard Portfolio Management LLC––––Not filed
Alyeska Investment Group, L.P.––––Not filed
Emerald Advisers, LLC––––Not filed
Deutsche Bank AG––––Not filed
Westwood Holdings Group Inc.––––Not filed
Qube Research & Technologies Ltd––––Not filed
Ranger Investment Management, L.P.––––Not filed
Voya Investment Management LLC––––Not filed
Franklin Resources Inc––––Not filed
Oberweis Asset Management Inc––––Not filed
Nuveen, LLC––––Not filed
Greenhouse Funds LLLP––––Not filed
Steadfast Capital Management LP––––Not filed
Northern Trust Corp––––Not filed
Bank of Nova Scotia––––Not filed
Charles Schwab Investment Management Inc––––Not filed
BNP Paribas Arbitrage, SA––––Not filed
Marshall Wace, LLP––––Not filed
Cushing Asset Management, LP––––Not filed
Emerald Mutual Fund Advisers Trust––––Not filed
Kennedy Capital Management, Inc.––––Not filed
Gilder Gagnon Howe & Co LLC––––Not filed
Vanguard Fiduciary Trust Co––––Not filed
Brown Brothers Harriman & Co––––Not filed
Bank of New York Mellon Corp––––Not filed
Congress Asset Management Co––––Not filed
Royce & Associates LP––––Not filed
Barclays PLC––––Not filed
Axiom Investors LLC––––Not filed
Tortoise Capital Advisors, L.L.C.––––Not filed
Wealth High Governance Asset Management Ltda.––––Not filed
Point72 Asset Management, L.P.––––Not filed
Jump Financial, LLC––––Not filed
Nomura Asset Management International Inc.––––Not filed
Renaissance Technologies LLC––––Not filed
Sagefield Capital LP––––Not filed
Goodlander Investment Management, LLC––––Not filed
New York State Common Retirement Fund––––Not filed
Millennium Management LLC––––Not filed
Bank of America Corp––––Not filed
Russell Investments Group, Ltd.––––Not filed
Agf Management Ltd––––Not filed
La Banque Postale Asset Management SA––––Not filed
First Trust Advisors LP––––Not filed
LPL Financial LLC––––Not filed
Penn Capital Management Co Inc––––Not filed
Stephens Investment Management Group LLC––––Not filed
Schonfeld Strategic Advisors LLC––––Not filed
Bank of Montreal––––Not filed
TimesSquare Capital Management, LLC––––Not filed
Citadel Advisors LLC––––Not filed
Citigroup Inc––––Not filed
Bessemer Group Inc––––Not filed
Zweig-DiMenna Associates LLC––––Not filed
BWCP, LP––––Not filed
SEI Investments Co––––Not filed
JPMorgan Chase & Co––––Not filed
Squarepoint Ops LLC––––Not filed
Picton Mahoney Asset Management––––Not filed
No Street GP LP––––Not filed
Ceredex Value Advisors LLC––––Not filed
Wells Fargo & Company––––Not filed
Voloridge Investment Management, LLC––––Not filed
Diameter Capital Partners LP––––Not filed
Hallstatt Advisors L.P.––––Not filed
Raymond James Financial Inc––––Not filed
HRT Financial LP––––Not filed
Hiddenite Capital Partners LP––––Not filed
Silvercrest Asset Management Group LLC––––Not filed
Fred Alger Management, LLC––––Not filed
ING Groep NV––––Not filed
Palisade Capital Management LLC––––Not filed