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Kosmos Energy Ltd.

KOS
Exchange
NYSE
Industry
Crude Petroleum & Natural Gas
SEC CIK
0001509991

In the last 90 days, Kosmos Energy Ltd. insiders filed 0 open-market purchases and 4 sales; 268 institutions reported holding it in 13F filings for Q2 2026, worth $909.1M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Kosmos Energy Ltd. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of KOS: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders2104263+57
Shares341.6M14.9M434.1M+107.3M (+32.8%)
Value$310.8M$13.5M$1.21B+$910.7M (+306.3%)

4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (88)

Institutions that held Kosmos Energy Ltd. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to KOS in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Portfolio Management LLC8,619,103$24.0M0.00%
Davidson Kempner Capital Management LP8,419,986$23.4M0.42%
Vanguard Capital Management LLC6,422,390$17.9M0.00%
Boston Partners4,756,571$13.3M0.01%
Monaco Asset Management SAM4,045,884$11.2M3.57%
Ghisallo Capital Management LLC3,675,000$10.2M0.28%
Vanguard Fiduciary Trust Co3,232,465$8.99M0.00%
Covalis Capital LLP3,162,820$8.79M0.54%
HRT Financial LP2,719,928$7.56M0.02%
Walleye Capital LLC2,314,477$6.43M0.04%
GeoSphere Capital Management, LLC2,038,788$5.67M3.41%
Arrowstreet Capital, Limited Partnership1,729,874$4.81M0.00%
Quadrature Capital Ltd1,474,133$4.10M0.05%
J. Goldman & Co LP1,443,749$4.01M0.19%
LPL Financial LLC1,404,359$3.90M0.00%
Algert Global LLC1,256,867$3.49M0.05%
Quantbot Technologies LP1,231,912$3.42M0.14%
ExodusPoint Capital Management, LP1,096,323$3.05M0.03%
LMR Partners LLP1,036,943$2.88M0.03%
First Sabrepoint Capital Management LP1,000,000$2.78M1.14%
Purpose Unlimited Inc.1,000,000$2.78M0.11%
Susquehanna Portfolio Strategies, LLC990,888$2.75M0.04%
Thomist Capital Management, LP927,209$2.58M0.88%
Aquatic Capital Management LLC923,417$2.57M0.07%
CenterBook Partners LP891,474$2.48M0.13%
Boothbay Fund Management, LLC759,700$2.11M0.05%
Gratia Capital, LLC719,800$2.00M1.89%
Portolan Capital Management, LLC602,542$1.68M0.09%
Aventail Capital Group, LP500,000$1.39M0.07%
Centiva Capital, LP495,305$1.38M0.06%
Winton Group Ltd487,200$1.35M0.05%
Vanguard Asset Management, Ltd392,801$1.09M0.00%
Schonfeld Strategic Advisors LLC367,733$1.02M0.01%
Verdence Capital Advisors LLC352,132$978.9K0.06%
Headlands Technologies LLC306,574$852.3K0.10%
RWC Asset Management LLP292,513$813.2K0.03%
Jupiter Asset Management Ltd261,059$725.7K0.00%
Vanguard Global Advisers, LLC230,640$641.2K0.00%
Itau Unibanco Holding S.A.208,847$580.6K0.01%
Engineers Gate Manager LP201,333$559.7K0.01%
Counterpoint Mutual Funds LLC191,885$533.4K0.08%
Axq Capital, LP181,054$503.3K0.06%
Vanguard Investments Australia, Ltd.146,482$407.2K0.00%
Pale Fire Capital SE145,000$403.1K0.04%
Scientech Research LLC138,072$383.8K0.32%
Colony Group, LLC114,212$317.5K0.00%
PEAK6 LLC97,645$271.5K0.01%
Virtu Financial LLC93,169$259.0K0.01%
Gsa Capital Partners LLP92,076$256.0K0.02%
Wellington Management Group LLP74,323$206.6K0.00%
Sanders Morris Harris LLC71,000$197.4K0.03%
Omers Administration Corp52,800$146.8K0.00%
Clear Street Markets LLC47,000$130.7K0.06%
Ieq Capital, LLC45,869$127.5K0.00%
Prelude Capital Management, LLC39,654$110.2K0.01%
Jump Financial, LLC32,773$91.1K0.00%
Inspirion Wealth Advisors, LLC27,828$77.4K0.01%
Militia Capital Management LLC25,000$69.5K0.02%
CIBC Bancorp USA Inc.24,224$67.3K0.00%
Y-Intercept (Hong Kong) Ltd21,649$60.2K0.00%
Nomura Asset Management Co Ltd19,000$52.8K0.00%
RMB Capital Management, LLC16,710$46.5K0.00%
KBC Group NV15,653$44.0K0.00%
Oak Thistle LLC14,131$39.3K0.00%
Parkside Financial Bank & Trust13,249$36.8K0.00%
Panagora Asset Management Inc13,118$36.5K0.00%
Abel Hall, LLC13,095$36.4K0.01%
Integrated Wealth Concepts LLC11,987$33.3K0.00%
Merit Financial Group, LLC11,815$32.8K0.00%
Caerus Investment Advisors, LLC11,019$30.6K0.01%
Kestra Advisory Services, LLC11,000$30.6K0.00%
Anchor Investment Management, LLC5,000$13.9K0.00%
Advisory Services Network, LLC4,803$13.4K0.00%
Ronald Blue Trust, Inc.4,000$11.1K0.00%
EverSource Wealth Advisors, LLC3,980$11.1K0.00%
Kilter Group LLC3,117$8.67K0.00%
Northwestern Mutual Wealth Management Co2,265$6.30K0.00%
Essential Partners LLC2,180$6.06K0.00%
Nisa Investment Advisors, LLC2,119$5.89K0.00%
Aster Capital Management (DIFC) Ltd1,126$2.57K0.00%
Massmutual Trust Co FSB633$1.76K0.00%
SRS Capital Advisors, Inc.283$7870.00%
Fifth Third Bancorp204$5670.00%
Bruce G. Allen Investments, LLC140$3890.00%
Cassaday & Co Wealth Management LLC112$3120.00%
Root Financial Partners, LLC103$2860.00%
True Wealth Design, LLC57$1590.00%
Steward Partners Investment Advisory, LLC0$10.00%

Sold out (31)

Institutions that held Kosmos Energy Ltd. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of KOS in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Two Sigma Advisers, LP1,834,222$1.66M
Group One Trading, L.P.884,523$802.6K
Verition Fund Management LLC503,520$456.9K
Atom Investors LP231,275$209.9K
Alpine Global Management, LLC206,729$187.6K
Aristides Capital LLC197,200$178.9K
Connor, Clark & Lunn Investment Management Ltd.192,424$174.6K
Jefferies Financial Group Inc.150,000$136.1K
Simplex Trading, LLC139,947$126.9K
Lazard Asset Management LLC81,147$73.6K
STRS Ohio52,800$47.9K
Sagewood Asset Management LP45,890$41.6K
Mackenzie Financial Corp42,668$38.7K
Woodmont Investment Counsel LLC38,925$35.3K
BWM Planning, LLC31,898$28.9K
Abacus Wealth Partners, LLC26,532$24.1K
CoreCommodity Management, LLC19,180$17.4K
Teacher Retirement System of Texas15,782$14.3K
Athena Wealth Management, LLC13,418$12.2K
J.W. Cole Advisors, Inc.11,600$10.5K
NewEdge Wealth, LLC11,382$10.3K
State of Wyoming8,496$7.71K
Barrow Hanley Mewhinney & Strauss LLC4,396$3.99K
Los Angeles Capital Management LLC2,380$3.69K
Federation des caisses Desjardins du Quebec3,500$3.17K
Optiver Holding B.V.777$705
Smartleaf Asset Management LLC550$499
American National Bank174$158
DV Trading LLC57$52
The PNC Financial Services Group, Inc.34$31
Covestor Ltd53$0

Not filed for Q1 2026 yet (4)

Institutions that held Kosmos Energy Ltd. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding KOS in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc14,836,244$13.5M
CIBC World Markets Corp31,391$28.5K
Comerica Bank661$599
Global Retirement Partners, LLC350$318