Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI)
CUSIP: 83418M103
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Class A Common Stock, $0.01 par value
- Shares outstanding
- 48,846,240
- Total 13F shares
- 1,866,751
- Share change
- +350,517
- Total reported value
- $105,480,167
- Price per share
- $56.51
- Number of holders
- 57
- Value change
- +$19,924,499
- Number of buys
- 35
- Number of sells
- 19
Quarterly Holders Quick Answers
What is CUSIP 83418M103?
CUSIP 83418M103 identifies SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value in SEC institutional holdings data.
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- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
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Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 83418M103:
Top shareholders of SEI - Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| William A. Zartler |
3/4/5
13D/G
|
Chairman and Co-CEO, Director, 10%+ Owner |
10%
from 13D/G
|
14,035,828
mixed-class rows
|
$403,603,629 | +$466,100 | 01 Mar 2026 | |
| W. Howard Keenan Jr. |
3/4/5
|
Director |
—
mixed-class rows
|
22,301,752
mixed-class rows
|
$316,064,782 | — | 23 Aug 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
5.6%
from 13D/G
|
4,311,968
|
$198,221,180 | — | 31 Dec 2025 | |
| Yorktown Energy Partners X, L.P. |
3/4/5
13D/G
|
10%+ Owner |
16%
from 13D/G
|
14,158,468
mixed-class rows
|
$169,954,710 | — | 16 Dec 2024 | |
| Encompass Capital Advisors LLC |
13D/G
13F
|
Company |
5.2%
|
2,559,543
|
$135,092,680 | -$19,003,070 | 31 Dec 2025 | |
| Voya Financial, Inc. |
13D/G
|
— |
5.2%
|
2,545,879
|
$134,371,494 | $0 | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
13D/G
|
Company · The Vanguard Group |
6%
from 13D/G
|
2,913,632
|
$133,939,663 | — | 31 Dec 2025 | |
| FMR LLC |
13F
13D/G
|
Company |
5.2%
from 13D/G
|
2,289,564
|
$105,251,256 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
4.3%
|
2,091,364
|
$96,140,032 | — | 31 Dec 2025 | |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC |
13F
13D/G
|
Company |
4%
from 13D/G
|
2,076,324
|
$95,448,614 | — | 31 Dec 2025 | |
| BlackRock Portfolio Management LLC |
13D/G
|
— |
4.9%
|
2,175,763
|
$86,965,247 | -$50,313,357 | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
3.9%
|
1,882,847
|
$86,554,490 | — | 31 Dec 2025 | |
| Situational Awareness LP |
13F
|
Company |
3.8%
|
1,866,500
|
$85,803,005 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
|
Company |
1.6%
from 13D/G
|
1,845,050
|
$84,816,948 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13D/G
13F
|
Company |
3.7%
|
1,788,416
|
$82,214,378 | -$32,416,006 | 31 Dec 2025 | |
| KTR Management Company, LLC |
13D/G
3/4/5
|
10%+ Owner |
3.9%
|
2,000,000
|
$79,940,000 | -$84,527,877 | 04 Nov 2025 | |
| Solaris Energy Capital, LLC |
13D/G
|
— |
8.5%
|
3,513,496
|
$72,834,772 | $0 | 31 Dec 2024 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
3%
|
1,466,343
|
$67,407,787 | — | 31 Dec 2025 | |
| J Turbines, Inc. |
13D/G
3/4/5
|
10%+ Owner |
3.1%
|
2,114,783
|
$65,981,230 | -$129,480,000 | 28 Jul 2025 | |
| ADVENT INTERNATIONAL, L.P. |
13F
|
Company |
2.6%
|
1,263,809
|
$58,097,300 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.6%
|
1,247,663
|
$57,355,067 | — | 31 Dec 2025 | |
| VAN ECK ASSOCIATES CORP |
13F
|
Company |
2.5%
|
1,241,719
|
$57,081,000 | — | 31 Dec 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
13D/G
|
Company |
2.2%
from 13D/G
|
1,227,721
|
$56,438,334 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.4%
|
1,174,197
|
$53,977,836 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
2.4%
|
1,164,500
|
$53,532,065 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
2.4%
|
1,154,864
|
$53,089,098 | — | 31 Dec 2025 | |
| Kyle S. Ramachandran |
3/4/5
|
President |
—
mixed-class rows
|
1,501,133
mixed-class rows
|
$51,305,724 | +$50,000 | 01 Mar 2026 | |
| GW&K Investment Management, LLC |
13F
|
Company |
2.2%
|
1,082,458
|
$49,761,000 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
2.2%
|
1,079,931
|
$49,644,428 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.1%
|
1,023,173
|
$47,043,304 | — | 31 Dec 2025 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
|
Company |
2.1%
|
1,021,000
|
$46,935,370 | — | 31 Dec 2025 | |
| Value Aligned Research Advisors, LLC |
13F
|
Company |
2%
|
975,939
|
$44,863,916 | — | 31 Dec 2025 | |
| Goodlander Investment Management, LLC |
13F
|
Company |
2%
|
960,000
|
$44,131,200 | — | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
1.7%
|
838,110
|
$38,527,916 | — | 31 Dec 2025 | |
| Ceredex Value Advisors LLC |
13F
|
Company |
1.7%
|
812,901
|
$37,369,059 | — | 31 Dec 2025 | |
| Valiant Capital Management, L.P. |
13F
|
Company |
1.5%
|
734,499
|
$33,764,919 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
|
Company |
2.3%
from 13D/G
|
728,489
|
$33,488,413 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.5%
|
716,966
|
$32,958,927 | — | 31 Dec 2025 | |
| WESTWOOD HOLDINGS GROUP INC |
13F
|
Company |
1.4%
|
689,768
|
$31,708,635 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1.3%
|
642,245
|
$29,524,002 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.3%
|
629,747
|
$28,949,470 | — | 31 Dec 2025 | |
| EMERALD ADVISERS, LLC |
13F
|
Company |
1.3%
|
626,692
|
$28,809,031 | — | 31 Dec 2025 | |
| Ranger Investment Management, L.P. |
13F
|
Company |
1.3%
|
623,213
|
$28,649,102 | — | 31 Dec 2025 | |
| THRC Holdings, LP |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
3,178,875
|
$25,812,465 | — | 08 Dec 2023 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
1.1%
|
553,400
|
$25,439,798 | — | 31 Dec 2025 | |
| Cynthia M. Durrett |
3/4/5
|
Chief Administrative Officer, Director |
—
mixed-class rows
|
649,641
mixed-class rows
|
$22,684,332 | -$2,097,631 | 01 Mar 2026 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.98%
|
476,476
|
$21,903,602 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.81%
|
397,356
|
$18,266,456 | — | 31 Dec 2025 | |
| Sagefield Capital LP |
13F
|
Company |
0.81%
|
396,471
|
$18,225,771 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.77%
|
376,277
|
$17,297,454 | — | 31 Dec 2025 |
Institutional Holders of Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI) as of Q1 2026
As of 31 Mar 2026,
Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI) was held by
57 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
1,866,751 shares.
The largest 10 holders included
Assenagon Asset Management S.A., CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT, Stephens Investment Management Group LLC, BW Gestao de Investimentos Ltda., PINNACLE ASSOCIATES LTD, Moody Aldrich Partners LLC, RITHOLTZ WEALTH MANAGEMENT, AlphaStar Capital Management, LLC, Gunderson Capital Management LLC, and SG Americas Securities, LLC.
This page lists
61
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
333
Q1 2026 holders
57
Holder diff
-276
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.