Kosmos Energy Ltd. (KOS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

484,152,941Shares Outstanding

13,480,243Shares held by institutions

$21,298,784Value of institutional holdings

70.22%Institutional ownership %

-9.41%Shares Changed QoQ

198No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Kosmos Energy Ltd. (NYSE:KOS) includes 198 filers as of the latest reporting cycle ending December 2025.

Kosmos Energy saw its institutional ownership percentage fell to 70.2% in December 2025 from 82.7% in September 2025.
In percentage terms, this reflects as a holdings change of -9.41% quarter on quarter, and a decrease of 25.84% year over year.
The latest 13F cycle for Kosmos Energy reveals that of 198 total investors, 83 funds grew their exposure, whereas 82 reduced theirs and 33 made no changes.
This class of investors decreased its holdings in Kosmos Energy to 339.95Mn shares for the 13F-cycle ending December 2025, down by 35.30Mn shares quarter on quarter, and down 90.83Mn shares year over year.
The top institutional stake in Kosmos Energy as of December 31, 2025 belongs to BlackRock, Inc., which owns 46.85Mn shares, or 9.68% of the company.
Among the most significant buyers of Kosmos Energy during December 2025 were JANE STREET GROUP, LLC (7.67Mn), 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).
Leading sellers of Kosmos Energy stock in December 2025 included BlackRock, Inc. (22.06Mn), AMERICAN CENTURY COMPANIES INC (19.08Mn), BANK OF AMERICA CORP /DE/ (7.48Mn), BNP Paribas Asset Management Holding S.A. (6.71Mn), FMR LLC (3.28Mn).
The top 10 institutional holders of Kosmos Energy for the quarter ending December 2025 included BlackRock, Inc. (46.85Mn), Grantham, Mayo, Van Otterloo & Co. LLC (34.80Mn), 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 (11.30Mn), GEODE CAPITAL MANAGEMENT, LLC (11.27Mn).

198 Institutional Holders

13,480,243 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	46,852,560	-22,057,575	-32.01%	$42,514,014.00
Grantham, Mayo, Van Otterloo & Co. LLC	31 Dec, 2025	34,804,317	23,350	0.07%	$31,581,437.00
STATE STREET CORP	31 Dec, 2025	20,430,076	1,023,469	5.27%	$18,538,251.00
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	31 Dec, 2025	20,110,881	-884,620	-4.21%	$18,248,613.00
Equinox Partners Investment Management LLC	31 Dec, 2025	19,469,980	1,689,500	9.50%	$17,667,060.00
VANGUARD GROUP INC	31 Dec, 2025	14,836,244	515,647	3.60%	$13,456,474.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	14,827,966	-1,351,482	-8.35%	$13,454,896.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	12,045,593	1,962,936	19.47%	$10,930,171.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	11,300,711	-19,075,012	-62.80%	$10,254,266.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	11,272,318	832,029	7.97%	$10,230,410.00
JANE STREET GROUP, LLC	31 Dec, 2025	9,475,353	7,666,858	423.94%	$8,597,935.00
M&G Plc	31 Dec, 2025	8,736,923	758,779	9.51%	$8,736,923.00
FIRST TRUST ADVISORS LP	31 Dec, 2025	7,048,196	2,825,517	66.91%	$6,395,533.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	6,766,857	4,308,275	175.23%	$6,140,246.00
UBS Group AG	31 Dec, 2025	6,138,033	-1,187,319	-16.21%	$5,567,195.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	5,965,703	4,044,309	210.49%	$5,413,279.00
Russell Investments Group, Ltd.	31 Dec, 2025	5,885,653	-354,073	-5.67%	$5,340,640.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	5,878,286	-1,733,012	-22.77%	$5,333,861.00
CITADEL ADVISORS LLC	31 Dec, 2025	5,556,252	-1,069,269	-16.14%	$5,041,744.00
MORGAN STANLEY	31 Dec, 2025	4,709,209	-1,541,395	-24.66%	$4,273,137.00

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