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SEI · Solaris Energy Infrastructure, Inc. · Shareholders & Ownership

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$64.85 -0.91 (-1.38%)
Market Cap
$4.80B
Shares
76.57M
Volume · Oct 19 3.15M Avg daily vol (3M) 2.95M

Every disclosed holder of SEI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns SEI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 71,565,244 93.47%
Insiders (Forms 3, 4, 5) 0 0.00%
13D/G-only blocks 26,797,723 35.00%
Remaining 21,796,575 -28.47%
Registered funds (N-PORT, not summed) 23,039,213 30.09%

Shares outstanding: 76,566,392, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of SEI

# Holder Shares
1
BlackRock, Inc.
13G CIK 2012383 · Holding company · Jul 31, 2026
Rule 13d-1(b), qualified institution, not summed
8,024,851
1.1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
5,204,415
1.2
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,371,420
1.3
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
493,233
1.4
BlackRock Strategic Income Opportunities Portfolio
Fund S000062358 · Registered fund · Jun 30, 2026
BlackRock Funds V, not summed
403,846
1.5
iShares U.S. Oil Equipment & Services ETF
Fund S000009416 · Registered fund · Jun 30, 2026
iShares Trust, not summed
117,143
2
Zartler William A
Insider CIK 1520378 · Mar 1, 2026
Director, Chairman and Co-CEO, 10% Owner, issuer-wide, not summed
5,555,198
2.1
William A. Zartler
13G CIK 1520378 · Unknown · Dec 31, 2025
Rule 13d-1(d), exempt investor
5,289,542
3
Keenan W Howard JR
Insider CIK 1370287 · Aug 23, 2026
Director, issuer-wide, not summed
5,171,273
4
Yorktown Energy Partners X, L.P.
13G CIK 1577919 · Unknown · May 6, 2026
5,079,234
4.1
Yorktown Energy Partners X, L.P.
Insider CIK 1577919 · Dec 16, 2024
10% Owner, issuer-wide, not summed
7,079,234
5
Solaris Energy Capital, LLC
13G CIK 1705554 · Unknown · Dec 31, 2024
Rule 13d-1(d), exempt investor
3,513,496
6
BlackRock Portfolio Management LLC
13G CIK 2052113 · Holding company · Jun 30, 2025
Rule 13d-1(b), qualified institution
3,434,541
7
Voya Financial, Inc.
13G CIK 1535929 · Holding company · Dec 31, 2025
Rule 13d-1(b), qualified institution
2,545,879
8
Encompass Capital Advisors LLC
13F CIK 1541901 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,519,604
9
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,447,630
10
VANGUARD GROUP INC
13G CIK 102909 · Registered investment adviser · Jun 30, 2025
Rule 13d-1(b), qualified institution
2,440,849
11
J Turbines, Inc.
13D CIK 2036326 · Unknown · Jul 28, 2025
2,114,783
11.1
J Turbines, Inc.
Insider CIK 2036326 · Jul 28, 2025
10% Owner, issuer-wide, not summed
2,114,783
12
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
2,024,283
12.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
66
13
TWO SIGMA INVESTMENTS, LP
13F CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,979,861
14
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,762,092
15
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
13F CIK 1638555 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,692,838
16
JENNISON ASSOCIATES LLC
13F CIK 53417 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,691,193
17
Valiant Capital Management, L.P.
13F CIK 1452689 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,604,346
18
Driehaus Capital Management LLC
13F CIK 938206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,584,985
18.1
Driehaus Small Cap Growth Fund
Fund S000058261 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
214,936
18.2
Driehaus Micro Cap Growth Fund
Fund S000042829 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
89,539
19
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,581,402
19.1
Fidelity Small Cap Index Fund
Fund S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
584,242
19.2
Strategic Advisers U.S. Total Stock Fund
Fund S000084926 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
290,690
19.3
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
237,427
19.4
Strategic Advisers Fidelity U.S. Total Stock Fund
Fund S000061481 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
231,910
19.5
Fidelity Series Small Cap Core Fund
Fund S000077859 · Registered fund · Jul 31, 2026
Fidelity Concord Street Trust, not summed
229,100
20
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,487,464
20.1
State Street(R) SPDR(R) S&P(R) Oil & Gas Equipment & Services ETF
Fund S000012334 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
273,404
20.2
State Street Institutional Small-Cap Equity Fund
Fund S000001631 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL FUNDS, not summed
22,338
20.3
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
18,100
20.4
State Street(R) SPDR(R) S&P(R) North American Natural Resources ETF
Fund S000052050 · Registered fund · Jun 30, 2026
SPDR INDEX SHARES FUNDS, not summed
6,520
20.5
State Street(R) SPDR(R) Portfolio MSCI Global Stock Market ETF
Fund S000036082 · Registered fund · Jun 30, 2026
SPDR INDEX SHARES FUNDS, not summed
1,348
21
VAN ECK ASSOCIATES CORP
13F CIK 869178 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,478,669
21.1
VanEck Oil Services ETF
Fund S000034408 · Registered fund · Jun 30, 2026
VanEck ETF Trust, not summed
1,286,378
22
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,352,450
23
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,278,618
23.1
Goldman Sachs Small/Mid Cap Growth Fund
Fund S000009322 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
101,804
23.2
Goldman Sachs Small Cap Growth Fund
Fund S000061413 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
46,049
23.3
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
14,634
23.4
Goldman Sachs Multi-Manager Global Equity Fund
Fund S000049146 · Registered fund · Jul 31, 2026
Goldman Sachs Trust II, not summed
11,650
23.5
Goldman Sachs Small Cap Growth Insights Fund
Fund S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
7,176
24
AMERIPRISE FINANCIAL INC
13F CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,144,927
24.1
Columbia Acorn Fund
Fund S000009184 · Registered fund · Jun 30, 2026
COLUMBIA ACORN TRUST, not summed
238,656
24.2
Columbia Small Cap Value and Inflection Fund
Fund S000010793 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
154,080
24.3
Columbia Variable Portfolio - Acorn Fund
Fund S000008981 · Registered fund · Jun 30, 2026
COLUMBIA FUNDS VARIABLE SERIES TRUST, not summed
46,349
24.4
Variable Portfolio - Partners Small Cap Growth Fund
Fund S000028697 · Registered fund · Jun 30, 2026
Columbia Funds Variable Series Trust II, not summed
17,037
24.5
Columbia Global Opportunities Fund
Fund S000031367 · Registered fund · Jul 31, 2026
Columbia Funds Series Trust II, not summed
1,151
25
Clearbridge Investments, LLC
13F CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,138,159
26
Situational Awareness LP
13F CIK 2045724 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,129,621
27
Korea Investment CORP
13F CIK 1441689 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,096,000
28
Advent International, L.P.
13F CIK 1034196 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,094,427
29
PRINCIPAL FINANCIAL GROUP INC
13F CIK 1126328 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,072,200
29.1
SmallCap Fund
Fund S000007214 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
501,200
29.2
SmallCap Growth Fund I
Fund S000007175 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
160,380
29.3
SmallCap Account
Fund S000007675 · Registered fund · Jun 30, 2026
Principal Variable Contract Funds, Inc, not summed
40,700
29.4
SmallCap S&P 600 Index Fund
Fund S000007203 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
40,449
29.5
Global Listed Infrastructure Fund
Fund S000077513 · Registered fund · May 31, 2026
Principal Funds, Inc, not summed
19,213
30
GW&K Investment Management, LLC
13F CIK 1082917 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,038,119
31
Ramachandran Kyle S.
Insider CIK 1705386 · Mar 1, 2026
President, issuer-wide, not summed
954,456
32
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
927,422
32.1
Neuberger Small Cap Growth Fund
Fund S000007839 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
103,813
32.2
Neuberger Energy Transition & Infrastructure ETF
Fund S000075395 · Registered fund · Jul 31, 2026
Neuberger Berman ETF Trust, not summed
11,714
33
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
879,771
34
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
868,808
34.1
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
165,453
34.2
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
163,400
34.3
U.S. MICRO CAP PORTFOLIO
Fund S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
110,164
34.4
Dimensional U.S. Core Equity 2 ETF
Fund S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
81,683
34.5
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
61,666
35
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
806,686
36
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
798,365
36.1
T. Rowe Price New Horizons Fund, Inc.
Fund S000002106 · Registered fund · Jun 30, 2026
T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
463,300
36.2
T. Rowe Price Small-Cap Index Fund
Fund S000051327 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
8,059
36.3
T. Rowe Price Extended Equity Market Index Fund
Fund S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
6,969
37
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
794,184
38
Two Seas Capital LP
13F CIK 1823138 · Registered investment adviser · Sep 30, 2026
786,838
39
Alyeska Investment Group, L.P.
13F CIK 1453072 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
761,755
40
EMERALD ADVISERS, LLC
13F CIK 1015083 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
640,616
41
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
629,688
42
DEUTSCHE BANK AG\
13F CIK 948046 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
627,809
42.1
DWS RREEF Real Assets Fund
Fund S000032019 · Registered fund · Jun 30, 2026
DEUTSCHE DWS MARKET TRUST, not summed
211,850
42.2
DWS Small Cap Core Fund
Fund S000005709 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENT TRUST, not summed
150,000
42.3
DWS Small Cap Index VIP
Fund S000006223 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
8,290
42.4
DWS Global Small Cap Fund
Fund S000005468 · Registered fund · Jul 31, 2026
DEUTSCHE DWS GLOBAL/INTERNATIONAL FUND, INC., not summed
5,418
42.5
Xtrackers RREEF Global Natural Resources ETF
Fund S000083869 · Registered fund · May 31, 2026
DBX ETF Trust, not summed
4,853
43
WESTWOOD HOLDINGS GROUP INC
13F CIK 1165002 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
625,948
44
Qube Research & Technologies Ltd
13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
612,638
45
Ranger Investment Management, L.P.
13F CIK 1319691 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
583,733
45.1
Ranger Micro Cap Fund
Fund S000033850 · Registered fund · Jul 31, 2026
SPEND LIFE WISELY FUNDS INVESTMENT TRUST, not summed
4,135
45.2
Ranger Small Cap Fund
Fund S000033849 · Registered fund · Jul 31, 2026
SPEND LIFE WISELY FUNDS INVESTMENT TRUST, not summed
3,905
46
PGIM Jennison Small Company Fund
Fund S000004629 · Registered fund · Jun 30, 2026
Prudential Jennison Small Co Fund, Inc., not summed
570,128
47
VOYA INVESTMENT MANAGEMENT LLC
13F CIK 1068837 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
569,949
48
FRANKLIN RESOURCES INC
13F CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
567,173
48.1
Putnam Small Cap Growth Fund
Fund S000000777 · Registered fund · Jun 30, 2026
Putnam Funds Trust, not summed
326,286
48.2
Franklin Natural Resources Fund
Fund S000006887 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
31,100
48.3
Putnam VT Small Cap Growth Fund
Fund S000003883 · Registered fund · Jun 30, 2026
Putnam Variable Trust, not summed
4,996
49
OBERWEIS ASSET MANAGEMENT INC/
13F CIK 937886 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
564,581
49.1
Oberweis Small-Cap Opportunities Fund
Fund S000010232 · Registered fund · Jun 30, 2026
OBERWEIS FUNDS, not summed
471,400
49.2
Oberweis Global Opportunities Fund
Fund S000010230 · Registered fund · Jun 30, 2026
OBERWEIS FUNDS, not summed
12,600
50
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
558,368
50.1
College Retirement Equities Fund - Total Global Stock Account
Fund S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
263,275
50.2
Nuveen Small Cap Select Fund
Fund S000005569 · Registered fund · Jul 31, 2026
Nuveen Investment Funds, Inc., not summed
75,636
50.3
Nuveen Small Cap Blend Index Fund
Fund S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
68,995
50.4
Nuveen Small Cap Growth Opportunities Fund
Fund S000005567 · Registered fund · Jul 31, 2026
Nuveen Investment Funds, Inc., not summed
61,081
50.5
Nuveen Equity Index Fund
Fund S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
38,359

55 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 614 holders

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Key facts CIK 1697500 CUSIP 83418M103 13F (30d) 34 filings 34 filers Visit website Investor relations