Kosmos Energy Ltd. (KOS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

12,665,883Shares held by institutions

$37,491,014Value of institutional holdings

85.50%Institutional ownership %

-0.80%Shares Changed QoQ

227No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Kosmos Energy Ltd. (NYSE:KOS) showed up in the 13F filings of 206 institutional investors as of December 2025.

Collectively, these holders controlled 71.4% of Kosmos Energy's outstanding shares in December 2025, down from 85.5% in September 2025.
They decreased total shares held in KOS by -13.91% quarter over quarter, and investors in Kosmos Energy decreased 22.56% from a year ago.
Of these 206 holders, 85 added to their stakes in Kosmos Energy, 87 trimmed positions, and 34 made no changes.
Combined, these investors held 341.69Mn shares in KOS for December 2025, down by 55.2Mn shares quarter on quarter, and down 100.49Mn shares year over year.
BlackRock, Inc. leads ownership in KOS with 46.85Mn shares as of December 31, 2025, equal to 9.8% of outstanding shares.
The biggest buyers of Kosmos Energy for the quarter ending December 2025 included JANE STREET GROUP, LLC (7.53Mn), Goldman Sachs Group Inc (4.31Mn), D. E. Shaw & Co., Inc. (4.04Mn), FIRST TRUST ADVISORS LP (2.83Mn), TWO SIGMA INVESTMENTS, LP (2.13Mn).
Top sellers of KOS stock for the quarter ending December 2025 included BlackRock, Inc. (22.06Mn), AMERICAN CENTURY COMPANIES INC (19.08Mn), Bank Of America Corp /De/ (18.81Mn), Invesco Ltd. (8.03Mn), BNP Paribas Asset Management Holding S.A. (6.71Mn).
Per Business Quant data, the top 10 holders of Kosmos Energy for the quarter ending December 2025 are BlackRock, Inc. (46.85Mn), Grantham, Mayo, Van Otterloo & Co. LLC (34.8Mn), State Street Corp (20.43Mn), HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (20.11Mn), Equinox Partners Investment Management LLC (19.47Mn), VANGUARD GROUP INC (14.84Mn), MILLENNIUM MANAGEMENT LLC (14.83Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (12.05Mn), AMERICAN CENTURY COMPANIES INC (11.3Mn), GEODE CAPITAL MANAGEMENT, LLC (11.27Mn).

206 Institutional Holders

12,665,883 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	-22,057,575	-32.01%	$0.00
Grantham, Mayo, Van Otterloo & Co. LLC	31 Dec, 2025	23,350	0.07%	$0.00
M&G Plc	31 Dec, 2025	758,779	9.51%	$0.00
Barclays Plc	31 Dec, 2025	-3,046,410	-59.80%	$0.00
State Street Corp	31 Dec, 2025	1,023,469	5.27%	$0.00
UBS Group AG	31 Dec, 2025	-1,187,319	-16.21%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	24,689	930.61%	$0.00
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	31 Dec, 2025	-884,620	-4.21%	$0.00
Russell Investments Group, Ltd.	31 Dec, 2025	-354,073	-5.67%	$0.00
Equinox Partners Investment Management LLC	31 Dec, 2025	1,689,500	9.50%	$0.00
OSTRUM ASSET MANAGEMENT	31 Dec, 2025	0	0.00%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	515,647	3.60%	$0.00
Ballast Asset Management, LP	31 Dec, 2025	269,714	17.39%	$0.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	-1,351,482	-8.35%	$0.00
Nuveen, LLC	31 Dec, 2025	0	0.00%	$0.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,962,936	19.47%	$0.00
Raiffeisen Bank International AG	31 Dec, 2025	0	0.00%	$0.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	-19,075,012	-62.80%	$0.00
XTX Topco Ltd	31 Dec, 2025	914,037	0.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	832,029	7.97%	$0.00

1 - 20 of 206

Research Tools