Kosmos Energy KOS Institutional Ownership

NYSE KOS

$2.56 -0.02 (-0.77%)

As of: Sep 30, 2026 · 10:25 AM EDT

Institutions by Trading Activity

268 Institutions

Increased 169 63.1%

Unchanged 34 12.7%

Reduced 65 24.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

74.93%

▼-10.78 pp QoQ

Shares Held by Institutions

444.69Mn

of 593.44Mn outstanding

▲+8.85% QoQ

Shares Outstanding

593.44Mn

148.75Mn held outside 13F filers

Institutional Investors

268

filed 13F for Jun 2026

▲+6 vs prior quarter

Net Shares Added (QoQ)

+36.17Mn

accumulated since last quarter

Value of Holdings

$1.15Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Kosmos Energy Ltd. (NYSE:KOS) has 268 institutional investors that have filed 13F reports for the period ending June 2026.

Collectively, these holders controlled 74.9% of Kosmos Energy's outstanding shares in June 2026, down from 85.7% in March 2026.
They increased total shares held in Kosmos Energy by 8.85% from the prior quarter, while the number of investors in KOS increased 18.58% year over year.
Among the 268 funds, 169 bought more Kosmos Energy shares, 65 sold down, and 34 held their ground.
Altogether, these fund groups held 444.69Mn shares in KOS by June 2026, up by 36.17Mn shares quarter on quarter, and up 44.55Mn shares year over year.
BlackRock, Inc. holds the largest position in KOS at 56.02Mn shares as of June 30, 2026, or 9.44% of shares outstanding.
The most significant purchases of KOS for the quarter ending June 2026 came from Sixth Street Partners Management Company, L.P. (13.77Mn), BlackRock, Inc. (8.56Mn), AMERICAN CENTURY COMPANIES INC (7.94Mn), TWO SIGMA INVESTMENTS, LP (6.72Mn), Bridgewater Associates, LP (4.72Mn).
The largest sellers of Kosmos Energy for the quarter ending June 2026 were JANE STREET GROUP, LLC (11.65Mn), Grantham, Mayo, Van Otterloo & Co. LLC (6.46Mn), MILLENNIUM MANAGEMENT LLC (5.2Mn), CITADEL ADVISORS LLC (4.26Mn), FIRST TRUST ADVISORS LP (3.68Mn).
According to Business Quant data, leading holders of KOS for June 2026 are BlackRock, Inc. (56.02Mn), State Street Corp (29.45Mn), TWO SIGMA INVESTMENTS, LP (25.4Mn), D. E. Shaw & Co., Inc. (24.54Mn), Equinox Partners Investment Management LLC (20.68Mn), HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (18.84Mn), GEODE CAPITAL MANAGEMENT, LLC (17.07Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (13.77Mn), Sixth Street Partners Management Company, L.P. (13.77Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (12.0Mn).

Form 13F Holdings

267 Institutional Holders

Report period 30 Jun, 2026

Total shares held 444.69Mn

Of outstanding 74.93%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	56,023,521	9.44%	▲8,560,427	+18.04%	$118.21Mn
2	State Street Corp	0000093751	29,453,016	4.96%	▲1,205,219	+4.27%	$62.15Mn
3	TWO SIGMA INVESTMENTS, LP	0001179392	25,398,092	4.28%	▲6,717,764	+35.96%	$53.59Mn
4	D. E. Shaw & Co., Inc.	0001009207	24,538,308	4.13%	▲4,152,563	+20.37%	$51.78Mn
5	Equinox Partners Investment Management LLC	0000938552	20,678,033	3.48%	0	0.00%	$43.63Mn
6	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	0001164833	18,844,781	3.18%	▼1,206,820	-6.02%	$39.76Mn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	17,066,608	2.88%	▲4,352,553	+34.23%	$36.02Mn
8	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	13,769,666	2.32%	▼365,782	-2.59%	$29.05Mn
8	Sixth Street Partners Management Company, L.P.	0001812095	13,769,666	2.32%	▲13,769,666	0.00%	$29.05Mn
9	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	12,000,418	2.02%	▲3,381,315	+39.23%	$25.32Mn
10	Grantham, Mayo, Van Otterloo & Co. LLC	0001352662	11,850,124	2.00%	▼6,457,594	-35.27%	$25.00Mn
11	Invesco Ltd.	0000914208	10,949,038	1.85%	▼201,201	-1.80%	$23.10Mn
12	DIMENSIONAL FUND ADVISORS LP	0000354204	9,582,883	1.61%	▲2,499,808	+35.29%	$20.22Mn
13	Goldman Sachs Group Inc	0000886982	8,531,947	1.44%	▼729,749	-7.88%	$18.00Mn
14	AMERICAN CENTURY COMPANIES INC	0000748054	8,036,479	1.35%	▲7,938,277	+8,083.62%	$16.96Mn
15	DAVIDSON KEMPNER CAPITAL MANAGEMENT LP	0001595082	8,000,323	1.35%	▼419,663	-4.98%	$16.88Mn
16	MILLENNIUM MANAGEMENT LLC	0001273087	7,429,695	1.25%	▼5,203,209	-41.19%	$15.68Mn
17	M&G Plc	0001802539	7,409,687	1.25%	▲377,815	+5.37%	$14.82Mn
18	Morgan Stanley	0000895421	7,360,428	1.24%	▲1,523,351	+26.10%	$15.53Mn
19	Nuveen, LLC	0001871926	7,330,487	1.24%	▲4,015,843	+121.15%	$15.47Mn

Showing 1 to 20 of 267 holders