SEI · Solaris Energy Infrastructure, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding SEI
All superinvestors →Holder Concentration
Across 436 13F filersWho Holds SEI
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 433 filers, like-for-like change +10.7%; actively managed books +8.8%; index-like books +16.3%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 54.1% | 259 | +13.9% |
| Exempt adviser | 1.8% | 7 | -52.5% |
| Adviser | 4.4% | 10 | +30.4% |
| Bank | 7.5% | 25 | +21.6% |
| Insurer | 1.5% | 2 | -6.0% |
| Broker-dealer | 0.3% | 2 | +110.5% |
| Benefit plan | 0.1% | 4 | +1.6% |
| Non-US | 1.8% | 8 | +24.8% |
| Holding company | 16.9% | 8 | +19.4% |
| Unknown | 11.6% | 108 | -3.4% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 26.9% | 35 | +16.3% |
| Systematic-like | 8.5% | 31 | -32.6% |
| Concentrated | 8.2% | 61 | +30.3% |
| Diversified active | 56.3% | 305 | +16.8% |
| Unknown | 0.0% | 1 | +17.6% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 42.6% | 212 | +27.9% |
| Medium turnover | 33.6% | 111 | +10.0% |
| High turnover | 16.9% | 77 | -19.7% |
| Unknown | 6.9% | 33 | +27.2% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 10.8% | 64 | +21.6% |
| Medium horizon | 17.2% | 75 | +10.3% |
| Long horizon | 52.0% | 252 | +8.9% |
| Unknown | 19.9% | 42 | +10.7% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 4.3% | 103 | +35.2% |
| $1B to $10B | 21.5% | 141 | +29.7% |
| $10B to $100B | 21.1% | 121 | +0.7% |
| $100B or more | 53.1% | 68 | +7.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 4.1% | 112 | +11.9% |
| Pooled investment vehicles | 20.9% | 58 | +5.7% |
| Registered funds and BDCs | 18.1% | 32 | +20.8% |
| Pension and profit sharing plans | 0.2% | 3 | -14.8% |
| Insurance companies | 0.9% | 4 | -26.0% |
| Governments and sovereign funds | 2.1% | 12 | -15.0% |
| Corporations | 0.9% | 3 | +2.5% |
| Other investment advisers | 0.0% | 7 | +48.3% |
| Other | 0.3% | 5 | +553.8% |
| Diversified | 6.7% | 23 | +52.9% |
| Charitable organizations | 0.0% | 0 | — |
| Unknown | 45.9% | 174 | +7.2% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 27.6% | 79 | +0.5% |
| Private equity funds | 2.5% | 12 | +40.4% |
| Venture capital funds | 0.0% | 3 | +4.3% |
| Real estate funds | 0.0% | 4 | +104.2% |
| Securitized asset funds | 0.1% | 1 | +14.4% |
| Other private funds | 8.4% | 25 | +39.3% |
| Mixed private funds | 0.3% | 4 | -3.0% |
| Private funds, type not stated | 3.0% | 8 | -21.4% |
| No private funds | 14.1% | 130 | +17.7% |
| Unknown | 44.1% | 167 | +13.2% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 89.6% | 369 | +12.2% |
| Outside the US | 10.4% | 64 | -0.5% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 2 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
433 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $30,326,575 (3 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 63.8% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies SEI's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | CDNL Cardinal Infrastructure Group Inc. | 9 |
| 2 | PDFS Pdf Solutions Inc | 10 |
| 3 | DPC DPC Holdings PLC | 11 |
| 4 | BOOT Boot Barn Holdings, Inc. | 12 |
| 5 | AGX Argan Inc | 16 |
| 6 | CECO Ceco Environmental Corp | 12 |
| 7 | LTH Life Time Group Holdings, Inc. | 11 |
| 8 | AAOI Applied Optoelectronics, Inc. | 14 |
| 9 | MRCY Mercury Systems Inc | 10 |
| 10 | EE Excelerate Energy, Inc. | 6 |
Shareholder Targets
13F filers that own its peers but not SEI, quarter ended Jun 30, 2026Found through its holder-overlap peers: CDNL, PDFS, DPC, BOOT, AGX, CECO, LTH, AAOI, MRCY, EE, LASR, PIPR, MWH, WULF, LGN, AGBK, SITM, TTI, OSW, PUMP. 1,274 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | AMERICAN SECURITIES LLC Registered adviser, Unknown | $2,823,439,654 1 held | MWH |
| 2 | Blackstone Inc. Adviser, Concentrated | $1,672,964,540 7 held | LGN, DPC, WULF |
| 3 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,284,714,281 9 held | SITM, CECO, MRCY |
| 4 | LONE PINE CAPITAL LLC Registered adviser, Diversified active | $890,776,061 2 held | WULF, AGX |
| 5 | Value Aligned Research Advisors, LLC Registered adviser, Diversified active | $598,224,949 3 held | WULF, AAOI, LGN |
| 6 | LORD, ABBETT & CO. LLC Registered adviser, Diversified active | $573,741,176 12 held | SITM, CDNL, MRCY |
| 7 | Hood River Capital Management LLC Registered adviser, Diversified active | $565,650,407 7 held | AAOI, LTH, SITM |
| 8 | Searchlight Capital Partners, L.P. Registered adviser, Unknown | $515,867,960 1 held | DPC |
| 9 | JANA Partners Management, LP Registered adviser, Concentrated | $484,285,998 1 held | MRCY |
| 10 | LOOMIS SAYLES & CO L P Registered adviser, Diversified active | $482,510,881 9 held | LTH, MRCY, LGN |
Fund Ownership of SEI by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 11.83% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.18% | 1,667,471 |
| Index ETFs | 9.65% | 7,391,747 |
| Active ETFs | 0.80% | 610,236 |
| Active funds | 15.50% | 11,869,890 |
| Unclassified | 0.34% | 261,858 |
| All registered funds | 28.47% | 21,801,202 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $418,747,225 | 6.70% | 5,204,415 | Shares | 2026-08-07 | |
| Mid Encompass Capital Advisors LLC Registered adviser | $202,727,337 | 3.25% | 2,519,604 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $196,936,309 | 3.15% | 2,447,630 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $171,838,422 | 2.75% | 2,135,700 | Call | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $162,873,807 | 2.61% | 2,024,283 | Shares | 2026-08-13 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $159,299,616 | 2.55% | 1,979,861 | Shares | 2026-08-14 | |
| Mid SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Registered adviser | $136,205,745 | 2.18% | 1,692,838 | Shares | 2026-08-14 | |
| Mega JENNISON ASSOCIATES LLC Registered adviser | $136,073,388 | 2.18% | 1,691,193 | Shares | 2026-08-03 | |
| Mid Valiant Capital Management, L.P. Registered adviser | $129,085,679 | 2.07% | 1,604,346 | Shares | 2026-08-14 | |
| Large Driehaus Capital Management LLC Registered adviser | $127,527,893 | 2.04% | 1,584,985 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $127,239,603 | 2.04% | 1,581,402 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $119,681,353 | 1.92% | 1,487,464 | Shares | 2026-09-22 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $118,973,706 | 1.90% | 1,478,669 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $108,818,126 | 1.74% | 1,352,450 | Shares | 2026-08-12 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $102,877,603 | 1.65% | 1,278,618 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $94,669,236 | 1.52% | 1,176,600 | Call | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $92,120,824 | 1.47% | 1,144,927 | Shares | 2026-08-14 | |
| Mega Clearbridge Investments, LLC Registered adviser | $91,576,273 | 1.47% | 1,138,159 | Shares | 2026-08-13 | |
| Large Situational Awareness LP Registered adviser | $90,889,305 | 1.46% | 1,129,621 | Shares | 2026-08-14 | |
| Large Korea Investment CORP | $88,184,160 | 1.41% | 1,096,000 | Shares | 2026-08-12 | |
| Large Advent International, L.P. | $88,057,596 | 1.41% | 1,094,427 | Shares | 2026-08-14 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $86,269,211 | 1.38% | 1,072,200 | Shares | 2026-08-04 | |
| Large GW&K Investment Management, LLC Registered adviser | $83,527,053 | 1.34% | 1,038,119 | Shares | 2026-08-12 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $74,620,373 | 1.19% | 927,422 | Shares | 2026-08-13 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $70,786,373 | 1.13% | 879,771 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $69,904,289 | 1.12% | 868,808 | Shares | 2026-08-11 | |
| Mega UBS Group AG Bank | $64,905,955 | 1.04% | 806,686 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $64,236,447 | 1.03% | 798,365 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $63,900,044 | 1.02% | 794,184 | Shares | 2026-08-13 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $61,290,807 | 0.98% | 761,755 | Shares | 2026-08-14 | |
| Mid Two Seas Capital LP Registered adviser | $56,007,128 | 0.90% | 786,838 | Shares | 2026-10-06 | |
| Mid EMERALD ADVISERS, LLC Registered adviser | $51,543,963 | 0.83% | 640,616 | Shares | 2026-08-05 | |
| Mega DEUTSCHE BANK AG\ Non-US | $50,513,511 | 0.81% | 627,809 | Shares | 2026-08-07 | |
| Large WESTWOOD HOLDINGS GROUP INC Adviser | $50,363,776 | 0.81% | 625,948 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $49,292,853 | 0.79% | 612,638 | Shares | 2026-08-14 | |
| Mid Ranger Investment Management, L.P. Registered adviser | $46,967,157 | 0.75% | 583,733 | Shares | 2026-08-13 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $45,858,095 | 0.73% | 569,949 | Shares | 2026-08-12 | |
| Mega FRANKLIN RESOURCES INC Adviser | $45,634,737 | 0.73% | 567,173 | Shares | 2026-08-13 | |
| Mid OBERWEIS ASSET MANAGEMENT INC/ Registered adviser | $45,426,187 | 0.73% | 564,581 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $44,926,288 | 0.72% | 558,368 | Shares | 2026-08-11 | |
| Large Caption Management, LLC Registered adviser | $43,287,480 | 0.69% | 538,000 | Call | 2026-08-14 | |
| Mid Greenhouse Funds LLLP Registered adviser | $39,831,964 | 0.64% | 495,053 | Shares | 2026-08-14 | |
| Mid STEADFAST CAPITAL MANAGEMENT LP Registered adviser | $38,773,754 | 0.62% | 481,901 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $38,620,800 | 0.62% | 480,000 | Call | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $38,597,706 | 0.62% | 479,713 | Shares | 2026-08-13 | |
| Large BANK OF NOVA SCOTIA Bank | $37,306,003 | 0.60% | 463,659 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $36,675,920 | 0.59% | 455,828 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $36,558,368 | 0.59% | 454,367 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $36,046,080 | 0.58% | 448,000 | Call | 2026-09-02 | |
| Mega JANE STREET GROUP, LLC | $35,684,010 | 0.57% | 443,500 | Put | 2026-08-14 | |
| Large MARSHALL WACE, LLP Exempt adviser | $34,748,339 | 0.56% | 431,871 | Shares | 2026-08-13 | |
| Mid CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT Registered adviser | $33,632,280 | 0.54% | 418,000 | Shares | 2026-07-28 | |
| Mid EMERALD MUTUAL FUND ADVISERS TRUST Registered adviser | $32,611,483 | 0.52% | 405,313 | Shares | 2026-08-05 | |
| Mid KENNEDY CAPITAL MANAGEMENT LLC Registered adviser | $32,514,207 | 0.52% | 404,104 | Shares | 2026-08-14 | |
| Mid GILDER GAGNON HOWE & CO LLC Registered adviser | $32,425,058 | 0.52% | 402,996 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $31,878,252 | 0.51% | 396,200 | Put | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $31,485,526 | 0.50% | 391,319 | Shares | 2026-08-13 | |
| Large BROWN BROTHERS HARRIMAN & CO Adviser | $31,041,387 | 0.50% | 385,799 | Shares | 2026-08-12 | |
| Mega Bank of New York Mellon Corp Bank | $30,880,946 | 0.49% | 383,805 | Shares | 2026-08-06 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $26,837,191 | 0.43% | 333,547 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $25,585,957 | 0.41% | 317,996 | Shares | 2026-08-14 | |
| Large AXIOM INVESTORS LLC /DE Registered adviser | $24,850,875 | 0.40% | 308,860 | Shares | 2026-08-12 | |
| Large CONGRESS ASSET MANAGEMENT CO Registered adviser | $23,861,600 | 0.38% | 335,229 | Shares | 2026-10-06 | |
| Mid TORTOISE CAPITAL ADVISORS, L.L.C. Registered adviser | $23,601,492 | 0.38% | 293,332 | Shares | 2026-08-14 | |
| Small Wealth High Governance Asset Management Ltda. | $23,294,618 | 0.37% | 289,518 | Shares | 2026-08-12 | |
| Large Point72 Asset Management, L.P. Registered adviser | $23,272,813 | 0.37% | 289,247 | Shares | 2026-08-14 | |
| Mid Jump Financial, LLC | $23,008,502 | 0.37% | 285,962 | Shares | 2026-08-13 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $22,233,511 | 0.36% | 276,330 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $21,997,764 | 0.35% | 273,400 | Shares | 2026-08-13 | |
| Mid Sagefield Capital LP | $21,901,372 | 0.35% | 272,202 | Shares | 2026-08-14 | |
| Small Goodlander Investment Management, LLC Registered adviser | $21,724,200 | 0.35% | 270,000 | Shares | 2026-08-14 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $21,589,992 | 0.35% | 268,332 | Shares | 2026-07-29 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $21,541,153 | 0.34% | 267,725 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $21,003,999 | 0.34% | 261,049 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $20,715,390 | 0.33% | 257,462 | Shares | 2026-08-06 | |
| Large AGF MANAGEMENT LTD | $20,580,782 | 0.33% | 255,789 | Shares | 2026-08-10 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $20,090,862 | 0.32% | 249,700 | Put | 2026-09-02 | |
| Mid LBP AM SA | $19,759,930 | 0.32% | 245,587 | Shares | 2026-07-24 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $19,105,387 | 0.31% | 237,452 | Shares | 2026-08-11 | |
| Mega LPL Financial LLC Broker-dealer | $18,537,179 | 0.30% | 230,390 | Shares | 2026-08-07 | |
| Mid Penn Capital Management Company, LLC Registered adviser | $18,062,063 | 0.29% | 224,485 | Shares | 2026-07-30 | |
| Mid Stephens Investment Management Group LLC Registered adviser | $17,854,074 | 0.29% | 221,900 | Shares | 2026-07-29 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $16,826,680 | 0.27% | 209,131 | Shares | 2026-08-14 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $15,968,413 | 0.26% | 198,464 | Shares | 2026-08-12 | |
| Mid TimesSquare Capital Management, LLC Registered adviser | $15,935,183 | 0.26% | 198,051 | Shares | 2026-08-07 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $15,800,976 | 0.25% | 196,383 | Shares | 2026-09-02 | |
| Mega CITIGROUP INC Bank | $15,649,308 | 0.25% | 194,498 | Shares | 2026-08-03 | |
| Large BESSEMER GROUP INC | $14,898,212 | 0.24% | 185,181 | Shares | 2026-08-12 | |
| Mid Zweig-DiMenna Associates LLC | $13,891,419 | 0.22% | 172,650 | Shares | 2026-08-13 | |
| Small BWCP, LP Registered adviser | $13,856,418 | 0.22% | 172,215 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $13,036,289 | 0.21% | 162,022 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $12,746,229 | 0.20% | 158,417 | Shares | 2026-08-12 | |
| Large Squarepoint Ops LLC Registered adviser | $12,734,404 | 0.20% | 158,270 | Shares | 2026-08-14 | |
| Large PICTON MAHONEY ASSET MANAGEMENT Non-US | $12,526,012 | 0.20% | 155,680 | Shares | 2026-08-13 | |
| Mid No Street GP LP Registered adviser | $12,471,300 | 0.20% | 155,000 | Shares | 2026-08-14 | |
| Mid Ceredex Value Advisors LLC Registered adviser | $12,431,070 | 0.20% | 154,500 | Shares | 2026-08-11 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $12,355,998 | 0.20% | 153,567 | Shares | 2026-08-14 | |
| Large VOLORIDGE INVESTMENT MANAGEMENT, LLC Registered adviser | $12,192,586 | 0.20% | 151,536 | Shares | 2026-08-14 | |
| Mid Diameter Capital Partners LP Registered adviser | $12,069,000 | 0.19% | 150,000 | Shares | 2026-08-14 | |
| Small HALLSTATT ADVISORS L.P. | $11,820,137 | 0.19% | 146,907 | Shares | 2026-08-04 |
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