SEI Solaris Energy Infrastructure, Inc.
Solaris Energy Infrastructure, Inc. (SEI) Institutional Ownership
What the institutions did with SEI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 5.2M | 7.3% |
| Encompass Capital Advisors LLC | 2.5M | 3.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | 3.4% |
| MORGAN STANLEY | 2.0M | 2.8% |
| TWO SIGMA INVESTMENTS, LP | 2.0M | 2.8% |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1.7M | 2.4% |
| JENNISON ASSOCIATES LLC | 1.7M | 2.4% |
| Valiant Capital Management, L.P. | 1.6M | 2.3% |
| Driehaus Capital Management LLC | 1.6M | 2.2% |
| FMR LLC | 1.6M | 2.2% |
| STATE STREET CORP | 1.5M | 2.1% |
| VAN ECK ASSOCIATES CORP | 1.5M | 2.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | 1.9% |
| GOLDMAN SACHS GROUP INC | 1.3M | 1.8% |
| AMERIPRISE FINANCIAL INC | 1.1M | 1.6% |
| Clearbridge Investments, LLC | 1.1M | 1.6% |
| Situational Awareness LP | 1.1M | 1.6% |
| Korea Investment CORP | 1.1M | 1.5% |
| Advent International, L.P. | 1.1M | 1.5% |
| PRINCIPAL FINANCIAL GROUP INC | 1.1M | 1.5% |
| GW&K Investment Management, LLC | 1.0M | 1.5% |
| NEUBERGER BERMAN GROUP LLC | 927.4K | 1.3% |
| WELLINGTON MANAGEMENT GROUP LLP | 879.8K | 1.2% |
| DIMENSIONAL FUND ADVISORS LP | 868.8K | 1.2% |
| UBS Group AG | 806.7K | 1.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | Reduced | 2.3M | 267.7K | -2.0M |
| JANE STREET GROUP, LLC | Reduced | 1.6M | 50.3K | -1.5M |
| BlackRock, Inc. | Increased | 4.1M | 5.2M | +1.1M |
| MARSHALL WACE, LLP | Reduced | 1.5M | 431.9K | -1.0M |
| Clearbridge Investments, LLC | Increased | 111.6K | 1.1M | +1.0M |
| Value Aligned Research Advisors, LLC | Sold Out | 897.0K | 0 | -897.0K |
| Encompass Capital Advisors LLC | Increased | 1.8M | 2.5M | +769.6K |
| Alyeska Investment Group, L.P. | New | 0 | 761.8K | +761.8K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 51.4K | 798.4K | +747.0K |
| NEUBERGER BERMAN GROUP LLC | Increased | 257.7K | 927.4K | +669.7K |
| JENNISON ASSOCIATES LLC | Increased | 1.2M | 1.7M | +511.5K |
| Greenhouse Funds LLLP | New | 0 | 495.1K | +495.1K |
| Valiant Capital Management, L.P. | Increased | 1.1M | 1.6M | +484.8K |
| STEADFAST CAPITAL MANAGEMENT LP | New | 0 | 481.9K | +481.9K |
| VAN ECK ASSOCIATES CORP | Reduced | 2.0M | 1.5M | -475.8K |
| Korea Investment CORP | Increased | 670.5K | 1.1M | +425.5K |
| AMERIPRISE FINANCIAL INC | Increased | 725.0K | 1.1M | +419.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.0M | 2.4M | +407.2K |
| CONGRESS ASSET MANAGEMENT CO | Increased | 4.1K | 344.9K | +340.8K |
| MORGAN STANLEY | Increased | 1.7M | 2.0M | +316.8K |
| CITADEL ADVISORS LLC | Reduced | 493.5K | 196.4K | -297.1K |
| TORTOISE CAPITAL ADVISORS, L.L.C. | New | 0 | 293.3K | +293.3K |
| FMR LLC | Reduced | 1.9M | 1.6M | -281.2K |
| RENAISSANCE TECHNOLOGIES LLC | New | 0 | 273.4K | +273.4K |
| Assenagon Asset Management S.A. | Reduced | 431.9K | 159.2K | -272.7K |
| Goodlander Investment Management, LLC | New | 0 | 270.0K | +270.0K |
| HRT FINANCIAL LP | New | 0 | 267.6K | +267.6K |
| AGF MANAGEMENT LTD | New | 0 | 255.8K | +255.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.1M | 1.4M | +251.3K |
| BANK OF NOVA SCOTIA | Increased | 214.0K | 463.7K | +249.7K |
| LBP AM SA | New | 0 | 245.6K | +245.6K |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 790.6K | 569.9K | -220.7K |
| TimesSquare Capital Management, LLC | New | 0 | 198.1K | +198.1K |
| Schonfeld Strategic Advisors LLC | Increased | 14.0K | 209.1K | +195.2K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 606.2K | 794.2K | +188.0K |
| Qube Research & Technologies Ltd | Reduced | 793.3K | 612.6K | -180.7K |
| DEUTSCHE BANK AG\ | Increased | 448.9K | 627.8K | +178.9K |
| Trexquant Investment LP | Reduced | 189.0K | 10.4K | -178.6K |
| BROWN BROTHERS HARRIMAN & CO | Increased | 210.0K | 385.8K | +175.8K |
| BWCP, LP | New | 0 | 172.2K | +172.2K |
| FRANKLIN RESOURCES INC | Increased | 395.1K | 567.2K | +172.1K |
| Bank of New York Mellon Corp | Increased | 214.4K | 383.8K | +169.4K |
| Squarepoint Ops LLC | Reduced | 325.8K | 158.3K | -167.5K |
| Balyasny Asset Management L.P. | Reduced | 287.2K | 121.6K | -165.6K |
| AYAL Capital Advisors Ltd | Reduced | 268.8K | 109.1K | -159.7K |
| Diameter Capital Partners LP | New | 0 | 150.0K | +150.0K |
| Advent International, L.P. | Reduced | 1.2M | 1.1M | -146.9K |
| GOLDMAN SACHS GROUP INC | Increased | 1.1M | 1.3M | +144.8K |
| Hiddenite Capital Partners LP | New | 0 | 140.0K | +140.0K |
| ING GROEP NV | New | 0 | 132.3K | +132.3K |
| STATE STREET CORP | Increased | 1.4M | 1.5M | +132.1K |
| Ripple Effect Asset Management LP | New | 0 | 130.3K | +130.3K |
| Verition Fund Management LLC | New | 0 | 130.2K | +130.2K |
| Zweig-DiMenna Associates LLC | Increased | 47.5K | 172.7K | +125.2K |
| LPL Financial LLC | Increased | 112.5K | 230.4K | +117.9K |
| RENAISSANCE GROUP LLC | New | 0 | 117.8K | +117.8K |
| CenterBook Partners LP | Reduced | 146.7K | 33.1K | -113.6K |
| Aventail Capital Group, LP | Reduced | 163.9K | 51.5K | -112.4K |
| PEREGRINE CAPITAL MANAGEMENT LLC | New | 0 | 111.9K | +111.9K |
| Ratan Capital Management LP | Sold Out | 110.0K | 0 | -110.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.