Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI)

Historical Holders from Q2 2017 to Q4 2025

Type / Class
Equity / Class A Common Stock, $0.01 par value
Symbol
SEI on NYSE
Shares outstanding
48,893,412
Price per share
$45.97
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
55,305,273
Total reported value
$2,210,406,155
% of total 13F portfolios
0.01%
Share change
+7,368,432
Value change
+$322,737,171
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
270
Price from insider filings
$43.11
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Yorktown Energy Partners X, L.P. 16% $146,752,521 7,079,234 Yorktown Energy Partners X, L.P. 31 Dec 2024
Zartler William A 12% $105,832,413 5,105,278 William A. Zartler 31 Dec 2024
Solaris Energy Capital, LLC 8.5% $72,834,772 3,513,496 Solaris Energy Capital, LLC 31 Dec 2024
Encompass Capital Advisors LLC 6.6% -30% $116,695,852 -$28,354,358 2,919,586 -20% Encompass Capital Advisors LLC 30 Sep 2025
JANE STREET GROUP, LLC 5.1% $117,920,642 2,493,564 JANE STREET GROUP, LLC 01 Dec 2025
VANGUARD GROUP INC 6% +45% $69,051,618 +$23,469,922 2,440,849 +51% The Vanguard Group 30 Jun 2025
FMR LLC 5.2% $92,725,827 2,319,886 FMR LLC 30 Sep 2025
BlackRock Portfolio Management LLC 4.9% -40% $86,965,247 -$50,313,357 2,175,763 -37% BlackRock Portfolio Management LLC 30 Sep 2025
J Turbines, Inc. 3.1% -79% $65,981,230 -$129,480,000 2,114,783 -66% J Turbines, Inc. 28 Jul 2025
BlackRock, Inc. 5.6% -65% $42,820,012 -$74,998,321 2,065,606 -64% BlackRock, Inc. 31 Jan 2025
KTR Management Company, LLC 3.9% -36% $79,940,000 -$84,527,877 2,000,000 -51% KTR Management Company, LLC 04 Nov 2025
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 4% -24% $71,798,511 -$7,575,674 1,796,310 -9.5% Summit Partners Public Asset Management, LLC 30 Sep 2025
DRIEHAUS CAPITAL MANAGEMENT LLC 2.2% -63% $38,433,034 -$42,522,884 961,547 -53% DRIEHAUS CAPITAL MANAGEMENT LLC 30 Sep 2025
DIMENSIONAL FUND ADVISORS LP 2.3% $17,962,338 866,490 Dimensional Fund Advisors LP 31 Dec 2024
MILLENNIUM MANAGEMENT LLC 1.6% -68% $18,313,899 -$39,209,685 647,363 -68% Millennium Management LLC 30 Jun 2025
T. Rowe Price Investment Management, Inc. 1% -81% $7,864,941 -$43,714,263 379,399 -85% T. Rowe Price Investment Management, Inc. 31 Mar 2025
As of 30 Sep 2025, Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI) has 270 institutional shareholders filing 13F forms. They hold 55,305,273 shares. .

Top 25 institutional shareholders own 73% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
BlackRock, Inc. 9.9% 4,852,484 -21% 0% $193,953,789
Encompass Capital Advisors LLC 6% 2,919,586 -20% 5.3% $116,695,852
VANGUARD GROUP INC 5.5% 2,664,870 +9.2% 0% $106,514,854
FMR LLC 4.6% 2,237,437 +35% 0% $89,430,356
MORGAN STANLEY 3.9% 1,891,539 +19% 0% $75,604,856
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 3.7% 1,796,310 -25% 2.3% $71,798,511
GOLDMAN SACHS GROUP INC 3.5% 1,696,481 +101% 0.01% $67,808,354
VAN ECK ASSOCIATES CORP 2.7% 1,295,898 +624% 0.05% $51,797,000
WELLINGTON MANAGEMENT GROUP LLP 2.5% 1,222,542 -2.4% 0.01% $48,865,004
GW&K Investment Management, LLC 2.4% 1,177,830 +13% 0.42% $47,078,000
Situational Awareness LP 2.4% 1,150,300 2.1% $45,977,491
Point72 Asset Management, L.P. 2.2% 1,097,575 +530% 0.1% $43,870,039
JANE STREET GROUP, LLC 2.1% 1,044,042 0.05% $41,730,359
STATE STREET CORP 2.1% 1,043,621 +13% 0% $41,713,531
TWO SIGMA INVESTMENTS, LP 2.1% 1,007,320 +89% 0.06% $40,262,580
Advent International, L.P. 2.1% 1,006,900 0.81% $40,245,793
BRIGHTLINE CAPITAL MANAGEMENT, LLC 2.1% 1,003,000 -11% 16% $40,089,910
Driehaus Capital Management LLC 2% 961,547 -57% 0.28% $38,433,034
GEODE CAPITAL MANAGEMENT, LLC 1.9% 911,202 +5.5% 0% $36,426,455
Ceredex Value Advisors LLC 1.8% 876,900 0.81% $35,049,694
WESTWOOD HOLDINGS GROUP INC 1.8% 861,121 -43% 0.25% $34,419,000
MILLENNIUM MANAGEMENT LLC 1.6% 802,148 +24% 0.03% $32,061,856
SIR Capital Management, L.P. 1.6% 763,894 -26% 2.7% $30,532,843
PRICE T ROWE ASSOCIATES INC /MD/ 1.5% 728,373 +3274% 0% $29,114,000
Goodlander Investment Management, LLC 1.3% 650,000 -7.1% 9.9% $25,980,500

Institutional Holders of Solaris Energy Infrastructure, Inc. - Class A Common Stock, $0.01 par value (SEI) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q4 448,879 $20,683,320 +$1,149,386 4,597.09% 8
2025 Q3 55,305,273 $2,210,406,155 +$322,737,171 3,997% 270
2025 Q2 47,822,065 $1,352,942,005 +$209,556,312 2,829% 210
2025 Q1 40,959,060 $891,389,031 +$125,489,923 2,176% 199
2024 Q4 35,026,280 $1,008,015,576 +$330,954,907 2,878% 176
2024 Q3 23,891,385 $304,882,226 +$21,556,997 1,276% 131
2024 Q2 23,566,847 $202,202,624 -$10,503,128 858% 125
2024 Q1 24,776,940 $214,813,351 +$8,135,791 867% 131
2023 Q4 24,084,675 $191,738,828 +$18,784,861 796% 138
2023 Q3 21,580,847 $230,088,306 -$4,322,692 1,066% 117
2023 Q2 21,865,662 $182,138,714 -$9,893,331 833% 99
2023 Q1 23,009,966 $196,422,104 -$9,801,327 854% 116
2022 Q4 24,123,730 $239,546,440 +$1,380,820 993% 124
2022 Q3 24,016,823 $224,792,939 -$6,310,753 936% 124
2022 Q2 24,511,101 $267,404,973 +$26,468,188 1,088.01% 128
2022 Q1 25,512,174 $287,543,035 +$27,999,891 1,128.99% 119
2021 Q4 24,028,641 $157,347,942 -$9,728,057 654.97% 106
2021 Q3 22,086,837 $184,043,705 -$8,432,086 834.01% 103
2021 Q2 23,235,974 $226,483,516 -$1,340,673 974% 110
2021 Q1 23,036,908 $282,690,714 -$11,838,374 1,227% 112
2020 Q4 24,269,365 $198,356,824 +$7,469,199 814.02% 105
2020 Q3 23,045,511 $146,354,939 -$12,723,493 633.99% 103
2020 Q2 24,838,556 $184,077,094 -$13,349,950 742% 117
2020 Q1 26,961,050 $141,451,139 -$42,008,927 525% 116
2019 Q4 32,030,580 $448,434,684 +$6,768,699 1,400% 134
2019 Q3 31,750,229 $426,194,375 -$5,644,124 1,341.99% 122
2019 Q2 31,847,359 $477,016,506 +$24,771,910 1,498% 138
2019 Q1 30,115,077 $495,370,281 +$14,865,030 1,644.01% 117
2018 Q4 29,290,558 $354,114,534 -$176,798,425 1,208.99% 103
2018 Q3 36,963,944 $698,231,737 +$17,092,508 1,888.98% 107
2018 Q2 36,491,754 $521,298,878 +$19,334,857 1,428.98% 117
2018 Q1 34,777,544 $575,921,448 +$83,458,284 1,656% 116
2017 Q4 29,647,208 $634,773,241 +$108,694,736 2,140.99% 99
2017 Q3 24,753,743 $431,482,203 -$2,541,839 1,743% 67
2017 Q2 25,247,901 $291,103,222 +$291,103,222 1,152.94% 52