Kosmos Energy

KOS • NYSE

Kosmos Energy is a oil & gas exploration & production company in the energy sector on NYSE, led by Neal D. Shah, with a market cap of $487.9M. As of Q3 2025, 83% of shares are held by 228 institutional investors, with BlackRock, Inc. as the largest holder at 14.41%.

Chief Executive OfficerNeal D. Shah

Market Cap$487.9M

Oil & Gas Exploration & Production

Energy

Employees243.0

Websitekosmosenergy.com

Country

United States of America

Overview

Overview of institutional ownership in KOS as of Q3 2025 with a market cap of $793.9M

All Institutions

Institutions: 228
Value Held: $662.3M
Shares Held: 397.3M
Avg Position: $2.9M
Median Position: $108.9K

Hedge Funds

Hedge Funds: 21
Value Held: $83.9M
Shares Held: 50.5M
Avg Position: $4.0M
Median Position: $498.4K

Ownership Breakdown

Institutional (non-HF)

72.85%

$578.4M

Hedge Funds

10.57%

$83.9M

Retail & Other

16.58%

$131.6M

Based on market cap of $793.9M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in KOS as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$114.4M 0.00% of portfolio	14.41% 68.9M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
G Grantham, Mayo, Van Otterloo & Co. LLC Long Only Manager	William Michael May Owner	$57.7M 0.16% of portfolio	7.27% 34.8M shares	Q2 2020 Held for 5y 5m	$35.4B
A AMERICAN CENTURY COMPANIES INC Institution	-	$50.4M 0.03% of portfolio	6.35% 30.4M shares	Q4 2019 Held for 5y 11m	$195.93B
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Long Only Manager	Scott Hoy Mcbride CEO	$34.9M 0.11% of portfolio	4.39% 21.0M shares	≤ Q2 2013 Held for 12y 5m+	$32.2B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$32.2M 0.00% of portfolio	4.06% 19.4M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
MASON HILL ADVISORS LLC Hedge Fund•Value	Sean Michael Fieler President	$29.5M 15.93% of portfolio	3.72% 17.8M shares	Q1 2022 Held for 3y 8m	$185.2M
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	Dan Michael Berkovitz Chairman	$26.9M 0.02% of portfolio	3.38% 16.2M shares	≤ Q2 2013 Held for 12y 5m+	$121.98B
VANGUARD GROUP INC Institution	Salim Ramji CEO	$23.8M 0.00% of portfolio	2.99% 14.3M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
BANK OF AMERICA CORP /DE/ Institution	Brian T. Moynihan CEO	$18.8M 0.00% of portfolio	2.37% 11.3M shares	≤ Q2 2013 Held for 12y 5m+	$1.33T
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$17.3M 0.00% of portfolio	2.18% 10.4M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T

Net Capital Flow

Institutional buying and selling activity for KOS in Q3 2025

Traded: −$27.5M
Buyers: 106
Sellers: 98
Total Bought: +$51.2M
Total Sold: −$78.6M
Avg Position: $2.6M

Biggest Buyers

Institution	Net Bought	Current Position
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$14.1M +8.5M shares	$26.9M 16.2M shares
BANK OF AMERICA CORP /DE/ Institution	+$5.3M +3.2M shares	$18.8M 11.3M shares
STATE STREET CORP Institution	+$5.2M +3.2M shares	$32.2M 19.4M shares
M M&G Plc Institution	+$4.4M +2.2M shares	$16.0M 8.0M shares
N NOMURA HOLDINGS INC Institution	+$3.1M +1.9M shares	$3.1M 1.9M shares
D D. E. Shaw & Co., Inc. Institution	+$2.4M +1.5M shares	$3.2M 1.9M shares
SCHWAB CHARLES INVESTMENT MANAGEMENT INC Long Only Manager	+$2.3M +1.4M shares	$16.7M 10.1M shares
F First Eagle Investment Management, LLC Long Only Manager	+$1.2M +698.7K shares	$4.6M 2.7M shares
B BlackRock, Inc. Institution	+$1.1M +683.6K shares	$114.4M 68.9M shares
VAN ECK ASSOCIATES CORP ETF Provider	+$966.5K +582.2K shares	$1.6M 964.7K shares

Biggest Sellers

Institution	Net Sold	Current Position
P Patient Capital Management, LLC Hedge Fund•Value	−$26.6M −16.0M shares	$5.5M 3.3M shares
A AMERICAN CENTURY COMPANIES INC Institution	−$5.0M −3.0M shares	$50.4M 30.4M shares
GOLDMAN SACHS GROUP INC Institution	−$5.0M −3.0M shares	$4.1M 2.5M shares
S Squarepoint Ops LLC Hedge Fund•Quant	−$4.7M −2.8M shares	$651.9K 392.7K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	−$4.7M −2.8M shares	$11.0M 6.6M shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	−$4.0M −2.4M shares	$12.6M 7.6M shares
R RWC ASSET ADVISORS LLC Institution	−$3.9M −2.3M shares	Sold Off 0 shares
R ROYCE & ASSOCIATES LLC Institution	−$3.4M −2.0M shares	Sold Off 0 shares
G Grantham, Mayo, Van Otterloo & Co. LLC Long Only Manager	−$3.4M −2.0M shares	$57.7M 34.8M shares
C CAXTON ASSOCIATES LLP Institution	−$1.6M −948.1K shares	Sold Off 0 shares

Entry and Exit Activity

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

New Positions: 10
New Value: $443.0K
Exited Positions: 21
Exited Value: $12.6M

New Positions

Institution	Position Value
Gallagher Fiduciary Advisors, LLC Pension/Endowment	$289.4K 174.3K shares
V Vise Technologies, Inc. Institution	$83.5K 50.3K shares
C CI Private Wealth, LLC RIA/Wealth	$31.2K 18.8K shares
GUARDIAN CAPITAL LP Long Only Manager	$20.2K 12.2K shares
T TRANSCEND WEALTH COLLECTIVE, LLC RIA/Wealth	$17.9K 10.8K shares
B Bare Financial Services, Inc Institution	$466.0 281.0 shares
I Imprint Wealth LLC Institution	$286.0 172.0 shares
Archer Investment Corp RIA/Wealth	$166.0 100.0 shares
Guerra Advisors Inc RIA/Wealth	$2.0 1.0 shares
Sontag Advisory, LLC RIA/Wealth	$1.0 1.0 shares

Exited Positions

Institution	Previous Position
R RWC ASSET ADVISORS LLC Institution	$3.9M 2.3M shares
R ROYCE & ASSOCIATES LLC Institution	$3.4M 2.0M shares
C CAXTON ASSOCIATES LLP Institution	$1.6M 948.1K shares
R RWC Asset Management LLP Institution	$1.5M 857.5K shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	$822.3K 478.1K shares
P PEAK6 LLC Institution	$281.5K 163.7K shares
A AXQ CAPITAL, LP Hedge Fund•Market Neutral	$196.1K 114.0K shares
C Capricorn Fund Managers Ltd Institution	$184.0K 107.0K shares
S Security National Bank Institution	$152.5K 88.7K shares
SHEETS SMITH WEALTH MANAGEMENT RIA/Wealth	$120.7K 70.2K shares

Options Activity

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

Call Positions: 8
Call Value: $4.8M
Put Positions: 9
Put Value: $5.5M

Call Positions

Institution	Position Value
G GRATIA CAPITAL, LLC Hedge Fund•Multi-Strategy	$2.5M 15.0K contracts
L Lombard Odier Asset Management Corp Hedge Fund•Multi-Strategy	$1.2M 7.0K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$601.9K 3.6K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$345.8K 2.1K contracts
W WOLVERINE TRADING, LLC Institution	$148.0K 886.0 contracts
J JANE STREET GROUP, LLC Institution	$62.3K 375.0 contracts
Walleye Trading LLC RIA/Wealth	$166.0 1.0 contracts
I Inscription Capital, LLC RIA/Wealth	- - contracts

Put Positions

Institution	Position Value
Caption Management, LLC Hedge Fund•Long/Short	$2.0M 12.3K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.8M 10.9K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$821.0K 4.9K contracts
W WOLVERINE TRADING, LLC Institution	$777.9K 4.7K contracts
J JANE STREET GROUP, LLC Institution	$47.0K 283.0 contracts
C Cubist Systematic Strategies, LLC Institution	$29.9K 180.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$22.2K 134.0 contracts
Walleye Trading LLC RIA/Wealth	$1.3K 8.0 contracts
P PEAK6 LLC Institution	- - contracts

Most Committed Institutions

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

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
MASON HILL ADVISORS LLC Hedge Fund•Value	Sean Michael Fieler President	15.93% $29.5M	3.72% 17.8M shares	Q1 2022 Held for 3y 8m	$185.2M
Ballast Asset Management, LP Long Only Manager	Ragen R Stienke Managing Partner	1.17% $2.6M	0.32% 1.6M shares	Q3 2023 Held for 2y 2m	$219.1M
G GRAHAM CAPITAL WEALTH MANAGEMENT, LLC RIA/Wealth	Stash John Graham Managing Partner	1.13% $1.1M	0.14% 654.7K shares	Q3 2024 Held for 1y 2m	$96.5M
O OSTRUM ASSET MANAGEMENT Institution	-	0.30% $6.7M	0.84% 4.0M shares	Q1 2025 Held for 8 months	$2.2B
P Patient Capital Management, LLC Hedge Fund•Value	David Khan CFO	0.22% $5.5M	0.69% 3.3M shares	Q3 2023 Held for 2y 2m	$2.5B
N Nantahala Capital Management, LLC Hedge Fund•Multi-Strategy	Daniel J. Mack Managing Partner	0.18% $2.8M	0.36% 1.7M shares	Q1 2025 Held for 8 months	$1.6B
G Grantham, Mayo, Van Otterloo & Co. LLC Long Only Manager	William Michael May Owner	0.16% $57.7M	7.27% 34.8M shares	Q2 2020 Held for 5y 5m	$35.4B
C CLOVERFIELDS CAPITAL GROUP, LP Long Only Manager	Michael Deslauriers President	0.14% $451.3K	0.06% 271.9K shares	Q4 2023 Held for 1y 11m	$319.5M
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Long Only Manager	Scott Hoy Mcbride CEO	0.11% $34.9M	4.39% 21.0M shares	≤ Q2 2013 Held for 12y 5m+	$32.2B
M M&G Plc Institution	-	0.09% $16.0M	1.67% 8.0M shares	Q1 2024 Held for 1y 8m	$18.0B

Hedge Fund Spotlight

Discover hedge funds investing in KOS

Quantinno Capital Management LP

Hedge Fund • Market Neutral

Portfolio ManagerHoon Nmn Kim

Portfolio Value: $36.6B
Positions: 2,911
Last Reported: Q3 2025

Sector Allocation

Position in Kosmos Energy

Market Value: $20.8K
Shares Held: 12.5K
Portfolio Weight: 0.00%
Owned Since: 2025-Q3

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