Solaris Energy Infrastructure

SEI • XNYS

Solaris Energy Infrastructure is a oil & gas field machinery & equipment company on XNYS, led by William A. Zartler, with a market cap of $2.6B. As of Q3 2025, 124% of shares are held by 269 institutional investors, with BlackRock, Inc. as the largest holder at 10.88%.

Chief Executive OfficerWilliam A. Zartler

Market Cap$2.6B

OIL & GAS FIELD MACHINERY & EQUIPMENT

Employees338.0

Websitesolaris-energy.com

Overview

Overview of institutional ownership in SEI as of Q3 2025 with a market cap of $1.8B

All Institutions

Institutions: 269
Value Held: $2.2B
Shares Held: 55.3M
Avg Position: $8.2M
Median Position: $880.2K

Hedge Funds

Hedge Funds: 50
Value Held: $681.3M
Shares Held: 17.0M
Avg Position: $13.6M
Median Position: $4.5M

Ownership Breakdown

Institutional (non-HF)

85.74%

$1.5B

Hedge Funds

38.21%

$681.3M

Retail & Other

Based on market cap of $1.8B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in SEI as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$194.0M 0.00% of portfolio	10.88% 4.9M shares	Q3 2024 Held for 1y 2m	$5.67T
Encompass Capital Advisors LLC Hedge Fund•Long/Short	Todd Jason Kantor Managing Partner	$116.7M 5.22% of portfolio	6.55% 2.9M shares	Q3 2024 Held for 1y 2m	$2.2B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$106.5M 0.00% of portfolio	5.97% 2.7M shares	Q3 2024 Held for 1y 2m	$6.69T
FMR LLC Institution	-	$89.4M 0.00% of portfolio	5.02% 2.2M shares	Q3 2024 Held for 1y 2m	$1.92T
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$75.6M 0.00% of portfolio	4.24% 1.9M shares	Q1 2024 Held for 1y 8m	$1.65T
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Hedge Fund•Long/Short	Peter Y Chung CEO	$71.8M 2.28% of portfolio	4.03% 1.8M shares	Q4 2024 Held for 11 months	$3.2B
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	$67.8M 0.01% of portfolio	3.80% 1.7M shares	Q3 2024 Held for 1y 2m	$691.34B
VAN ECK ASSOCIATES CORP ETF Provider	Jan Frederick Vaneck CEO	$51.8M 0.05% of portfolio	2.91% 1.3M shares	Q2 2025 Held for 5 months	$96.6B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Jean Marie Hynes CEO	$48.9M 0.01% of portfolio	2.74% 1.2M shares	Q3 2024 Held for 1y 2m	$571.21B
GANNETT WELSH & KOTLER Long Only Manager	Thomas F X Powers CEO	$47.1M 0.42% of portfolio	2.64% 1.2M shares	Q3 2024 Held for 1y 2m	$11.2B

Net Capital Flow

Institutional buying and selling activity for SEI in Q3 2025

Traded: +$322.4M
Buyers: 164
Sellers: 106
Total Bought: +$698.6M
Total Sold: −$376.2M
Avg Position: $7.5M

Biggest Buyers

Institution	Net Bought	Current Position
S Situational Awareness LP Hedge Fund•Sector	+$46.0M +1.2M shares	$46.0M 1.2M shares
VAN ECK ASSOCIATES CORP ETF Provider	+$44.6M +1.1M shares	$51.8M 1.3M shares
J JANE STREET GROUP, LLC Institution	+$41.7M +1.0M shares	$41.7M 1.0M shares
ADVENT INTERNATIONAL CORP/MA Private Equity	+$40.2M +1.0M shares	$40.2M 1.0M shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	+$36.9M +923.3K shares	$43.9M 1.1M shares
Ceredex Value Advisors LLC Long Only Manager	+$35.0M +876.9K shares	$35.0M 876.9K shares
GOLDMAN SACHS GROUP INC Institution	+$34.1M +851.9K shares	$67.8M 1.7M shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	+$28.3M +706.8K shares	$29.1M 728.4K shares
FMR LLC Institution	+$23.4M +584.8K shares	$89.4M 2.2M shares
DISCOVERY CAPITAL MANAGEMENT, LLC / CT Hedge Fund•Global Macro	+$22.8M +569.2K shares	$22.8M 569.2K shares

Biggest Sellers

Institution	Net Sold	Current Position
DRIEHAUS CAPITAL MANAGEMENT LLC Hedge Fund•Event Driven	−$51.3M −1.3M shares	$38.4M 961.5K shares
B BlackRock, Inc. Institution	−$51.3M −1.3M shares	$194.0M 4.9M shares
Encompass Capital Advisors LLC Hedge Fund•Long/Short	−$28.3M −707.6K shares	$116.7M 2.9M shares
WESTWOOD HOLDINGS GROUP INC Institution	−$25.7M −643.6K shares	$34.4M 861.1K shares
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Hedge Fund•Long/Short	−$24.5M −613.3K shares	$71.8M 1.8M shares
H Honeycomb Asset Management LP Hedge Fund•Long/Short	−$19.0M −672.0K shares	Sold Off 0 shares
UBS Group AG Institution	−$10.8M −271.2K shares	$23.6M 590.7K shares
S SCOPUS ASSET MANAGEMENT, L.P. Hedge Fund•Long/Short	−$10.7M −378.7K shares	Sold Off 0 shares
S SIR Capital Management, L.P. Hedge Fund•Long/Short	−$10.7M −268.0K shares	$30.5M 763.9K shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	−$9.5M −335.9K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited SEI in Q3 2025

New Positions: 66
New Value: $272.9M
Exited Positions: 26
Exited Value: $68.2M

New Positions

Institution	Position Value
S Situational Awareness LP Hedge Fund•Sector	$46.0M 1.2M shares
ADVENT INTERNATIONAL CORP/MA Private Equity	$40.2M 1.0M shares
Ceredex Value Advisors LLC Long Only Manager	$35.0M 876.9K shares
DISCOVERY CAPITAL MANAGEMENT, LLC / CT Hedge Fund•Global Macro	$22.8M 569.2K shares
Ranger Investment Management, L.P. Long Only Manager	$17.0M 426.1K shares
Portolan Capital Management, LLC Hedge Fund•Long/Short	$14.5M 363.4K shares
Hiddenite Capital Partners LP Hedge Fund•Long/Short	$14.0M 350.0K shares
P Progeny 3, Inc. Institution	$12.9M 322.3K shares
C Concentric Capital Strategies, LP Hedge Fund•Long/Short	$12.0M 300.0K shares
A AGF MANAGEMENT LTD Institution	$6.6M 165.4K shares

Exited Positions

Institution	Previous Position
H Honeycomb Asset Management LP Hedge Fund•Long/Short	$19.0M 672.0K shares
S SCOPUS ASSET MANAGEMENT, L.P. Hedge Fund•Long/Short	$10.7M 378.7K shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	$9.5M 335.9K shares
CONGRESS ASSET MANAGEMENT CO /MA Long Only Manager	$5.7M 202.0K shares
Ghisallo Capital Management LLC Hedge Fund•Multi-Strategy	$5.1M 180.0K shares
Connor, Clark & Lunn Investment Management Ltd. Long Only Manager	$2.9M 101.0K shares
A AMERICAN CENTURY COMPANIES INC Institution	$2.6M 91.6K shares
Aperture Investors, LLC Hedge Fund•Multi-Strategy	$2.2M 79.2K shares
C Covalis Capital LLP Institution	$1.9M 66.4K shares
C CoreCommodity Management, LLC Hedge Fund•Global Macro	$1.5M 51.5K shares

Options Activity

Institutions with the largest Call and Put options positions in SEI as of Q3 2025

Call Positions: 10
Call Value: $38.7M
Put Positions: 13
Put Value: $130.7M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$12.5M 3.1K contracts
Caption Management, LLC Hedge Fund•Long/Short	$8.0M 2.0K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$6.7M 1.7K contracts
K K2 PRINCIPAL FUND, L.P. Institution	$3.4M 850.0 contracts
P PEAK6 LLC Institution	$3.2M 801.0 contracts
J JANE STREET GROUP, LLC Institution	$1.9M 475.0 contracts
W WOLVERINE TRADING, LLC Institution	$1.4M 340.0 contracts
D D. E. Shaw & Co., Inc. Institution	$1.4M 341.0 contracts
S SIG BROKERAGE, LP Institution	$259.8K 65.0 contracts
Graham Capital Management, L.P. Hedge Fund•Multi-Strategy	$48.0K 12.0 contracts

Put Positions

Institution	Position Value
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Hedge Fund•Long/Short	$69.1M 17.3K contracts
Y Yaupon Capital Management LP Hedge Fund•Multi-Strategy	$14.1M 3.5K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$13.3M 3.3K contracts
J JANE STREET GROUP, LLC Institution	$10.1M 2.5K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$9.3M 2.3K contracts
BARCLAYS PLC Institution	$4.0M 1.0K contracts
AMERIPRISE FINANCIAL INC Institution	$3.6M 897.0 contracts
A AYAL Capital Advisors Ltd Institution	$2.6M 650.0 contracts
W WOLVERINE TRADING, LLC Institution	$2.1M 502.0 contracts
P PEAK6 LLC Institution	$1.1M 282.0 contracts

Most Committed Institutions

Institutions with SEI as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
BRIGHTLINE CAPITAL MANAGEMENT, LLC Hedge Fund•Value	Nick Nmn Khera CEO	16.43% $40.1M	2.25% 1.0M shares	Q3 2024 Held for 1y 2m	$244.0M
Goodlander Investment Management, LLC Hedge Fund•Long/Short	John Paul Labanowski Founder	9.91% $26.0M	1.46% 650.0K shares	Q2 2025 Held for 5 months	$262.3M
Hiddenite Capital Partners LP Hedge Fund•Long/Short	Ryan Russell Packard Managing Partner	7.58% $14.0M	0.78% 350.0K shares	Q3 2025 Held for 2 months	$184.4M
Amplify Investments, LLC ETF Provider	William Belden President	7.40% $284.8K	0.02% 7.1K shares	Q2 2025 Held for 5 months	$3.9M
A AYAL Capital Advisors Ltd Institution	-	5.33% $9.2M	0.52% 231.4K shares	Q4 2024 Held for 11 months	$173.4M
Encompass Capital Advisors LLC Hedge Fund•Long/Short	Todd Jason Kantor Managing Partner	5.22% $116.7M	6.55% 2.9M shares	Q3 2024 Held for 1y 2m	$2.2B
Meros Investment Management, LP Long Only Manager	Kenneth Scott Canon CEO	4.98% $11.7M	0.65% 291.7K shares	Q3 2024 Held for 1y 2m	$234.2M
A Acuitas Investments, LLC Fund of Funds	Lisa Marie Thenell COO	4.69% $7.3M	0.41% 182.9K shares	Q3 2024 Held for 1y 2m	$155.8M
M Mercuria Capital Strategies, LLC Institution	-	4.48% $3.4M	0.19% 85.0K shares	Q3 2025 Held for 2 months	$75.9M
G GeoSphere Capital Management Hedge Fund•Long/Short	Arvind Singh Sanger CIO	4.25% $5.6M	0.31% 139.5K shares	Q1 2025 Held for 8 months	$131.0M

Hedge Fund Spotlight

Discover hedge funds investing in SEI

Bayesian Capital Management, LP

Hedge Fund • Quant

Portfolio ManagerVelin Krassimirov Tzanov

Portfolio Value: $489.3M
Positions: 501
Last Reported: Q3 2025

Sector Allocation

Position in Solaris Energy Infrastructure

Market Value: $407.7K
Shares Held: 10.2K
Portfolio Weight: 0.08%
Owned Since: 2025-Q1

Top Holding	Sector	Market Value	Weight
1 Microsoft MSFT	Software - Infrastructure Technology	$6.3M	1.29%
2 Meta Platforms, Inc. META	Internet Content & Information Communication Services	$6.0M	1.23%
3 Boston Scientific BSX	Medical - Devices Healthcare	$5.4M	1.10%