KOSMOS ENERGY LTD (KOS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 431,020,546 shares against 595,487,651 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $118.2M | 56,023,521 | 0.00% | 8q | +18.0%+$18.1M |
| STATE STREET CORP | $62.1M | 29,453,016 | 0.00% | 30q | +4.3%+$2.5M |
| TWO SIGMA INVESTMENTS, LP | $53.6M | 25,398,092 | 0.04% | 6q | +36.0%+$14.2M |
| D. E. Shaw & Co., Inc. | $51.8M | 24,538,308 | 0.02% | 8q | +20.4%+$8.8M |
| Equinox Partners Investment Management LLC | $43.6M | 20,678,033 | 20.54% | 18q | HELD |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | $39.8M | 18,844,781 | 0.12% | 31q | -6.0%-$2.5M |
| GEODE CAPITAL MANAGEMENT, LLC | $36.0M | 17,066,608 | 0.00% | 31q | +34.2%+$9.2M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $29.1M | 13,769,666 | 0.00% | 31q | -2.6%-$771.8K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $25.3M | 12,000,418 | 0.00% | 2q | +39.2%+$7.1M |
| Grantham, Mayo, Van Otterloo & Co. LLC | $25.0M | 11,850,124 | 0.06% | 25q | -35.3%-$13.6M |
| Invesco Ltd. | $23.1M | 10,949,038 | 0.00% | 31q | -1.8%-$424.5K |
| DIMENSIONAL FUND ADVISORS LP | $20.2M | 9,582,883 | 0.00% | 31q | +35.3%+$5.3M |
| GOLDMAN SACHS GROUP INC | $18.0M | 8,531,947 | 0.00% | 31q | -7.9%-$1.5M |
| AMERICAN CENTURY COMPANIES INC | $17.0M | 8,036,479 | 0.01% | 22q | +8083.6%+$16.7M |
| Davidson Kempner Capital Management LP | $16.9M | 8,000,323 | 0.20% | 2q | -5.0%-$885.5K |
| MILLENNIUM MANAGEMENT LLC | $15.7M | 7,429,695 | 0.01% | 31q | -41.2%-$11.0M |
| MORGAN STANLEY | $15.5M | 7,360,428 | 0.00% | 31q | +26.1%+$3.2M |
| Nuveen, LLC | $15.5M | 7,330,487 | 0.00% | 6q | +121.2%+$8.5M |
| M&G PLC | $14.8M | 7,409,687 | 0.07% | 10q | +5.4%+$755.6K |
| RENAISSANCE TECHNOLOGIES LLC | $14.8M | 7,008,668 | 0.02% | 4q | +31.3%+$3.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $14.4M | 6,812,762 | 0.00% | 2q | +6.1%+$823.7K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $13.7M incl. $6.6M options CALL+PUT | 3,356,675 | 0.00% | 31q | +43.0%+$4.1M |
| UBS Group AG | $12.8M | 6,079,462 | 0.00% | 31q | +26.3%+$2.7M |
| NORTHERN TRUST CORP | $11.2M | 5,312,419 | 0.00% | 31q | +25.5%+$2.3M |
| Bridgewater Associates, LP | $10.0M | 4,720,550 | 0.04% | new | NEW |
| Boston Partners | $8.9M | 4,097,453 | 0.01% | 2q | -13.9%-$1.4M |
| AQR CAPITAL MANAGEMENT LLC | $8.6M | 4,087,736 | 0.00% | 30q | +216.3%+$5.9M |
| FIRST TRUST ADVISORS LP | $8.5M | 4,013,283 | 0.00% | 29q | -47.8%-$7.8M |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | $8.5M | 4,008,525 | 0.07% | 31q | HELD |
| OSTRUM ASSET MANAGEMENT | $8.5M | 4,008,525 | 0.41% | 6q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $7.3M | 3,481,976 | 0.00% | 2q | +7.7%+$526.5K |
| BANK OF AMERICA CORP /DE/ | $6.2M | 2,932,515 | 0.00% | 31q | -47.1%-$5.5M |
| GeoSphere Capital Management, LLC | $5.9M | 2,813,788 | 1.94% | 2q | +38.0%+$1.6M |
| Russell Investments Group, Ltd. | $5.6M | 2,643,845 | 0.00% | 26q | -54.9%-$6.8M |
| ALGERT GLOBAL LLC | $5.3M | 2,490,698 | 0.06% | 2q | +98.2%+$2.6M |
| GROUP ONE TRADING LLC | $5.2M incl. $4.9M options CALL+PUT | 140,799 | 0.01% | 31q | HELD |
| CITADEL ADVISORS LLC | $4.8M incl. $4.4M options CALL+PUT | 194,910 | 0.00% | 31q | -95.6%-$105.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $4.8M | 2,281,727 | 0.00% | 31q | -45.1%-$3.9M |
| GRATIA CAPITAL, LLC | $4.4M incl. $2.4M options CALL | 963,678 | 2.68% | 5q | +33.9%+$1.1M |
| WELLS FARGO & COMPANY/MN | $4.3M | 2,057,790 | 0.00% | 31q | +31.9%+$1.1M |
| NOMURA HOLDINGS INC | $4.3M | 2,029,307 | 0.01% | 4q | -13.8%-$685.4K |
| Ballast Asset Management, LP | $4.2M | 2,008,153 | 1.69% | 12q | -1.0%-$42.0K |
| Point72 Asset Management, L.P. | $4.2M | 1,977,722 | 0.00% | 3q | +0.7%+$27.7K |
| Bank of New York Mellon Corp | $3.9M | 1,854,622 | 0.00% | 31q | +23.0%+$732.7K |
| BARCLAYS PLC | $3.7M | 1,733,808 | 0.00% | 31q | +4.8%+$166.9K |
| IMC-Chicago, LLC | $3.5M incl. $2.3M options CALL+PUT | 565,717 | 0.00% | 8q | +11.2%+$346.9K |
| Gotham Asset Management, LLC | $3.4M | 1,590,570 | 0.01% | 27q | +992.3%+$3.0M |
| SIMPLEX TRADING, LLC | $3.3M CALL+PUT | options only | 0.00% | 21q | OPTIONS |
| LMR Partners LLP | $3.2M | 1,505,351 | 0.01% | 2q | +45.2%+$988.3K |
| LPL Financial LLC | $2.9M | 1,377,423 | 0.00% | 2q | -1.9%-$56.8K |
| Squarepoint Ops LLC | $2.9M | 1,376,536 | 0.00% | 11q | +813.3%+$2.6M |
| CenterBook Partners LP | $2.8M | 1,314,526 | 0.14% | 2q | +47.5%+$892.6K |
| Swiss National Bank | $2.4M | 1,160,400 | 0.00% | 31q | +4.8%+$113.1K |
| Man Group plc | $2.4M | 1,142,835 | 0.00% | 3q | +165.4%+$1.5M |
| FMR LLC | $2.4M | 1,116,134 | 0.00% | 31q | +1947.4%+$2.2M |
| Purpose Unlimited Inc. | $2.2M | 1,060,000 | 0.09% | 2q | +6.0%+$126.6K |
| Susquehanna Portfolio Strategies, LLC | $2.2M | 1,032,986 | 0.03% | 2q | +4.2%+$88.8K |
| SEI INVESTMENTS CO | $2.1M | 1,000,238 | 0.00% | 30q | -34.0%-$1.1M |
| FIRST SABREPOINT CAPITAL MANAGEMENT LP | $2.1M | 1,000,000 | 0.69% | 2q | HELD |
| JANE STREET GROUP, LLC | $2.0M incl. $1.8M options CALL+PUT | 93,337 | 0.00% | 31q | -99.2%-$249.0M |
| PLUSTICK MANAGEMENT LLC | $1.9M | 900,000 | 0.71% | new | NEW |
| J. Goldman & Co LP | $1.8M CALL | options only | 0.05% | 2q | OPTIONS |
| SG Americas Securities, LLC | $1.8M | 856,411 | 0.00% | 31q | +18.5%+$281.7K |
| ALLIANCEBERNSTEIN L.P. | $1.8M | 639,860 | 0.00% | 31q | +29.8%+$408.7K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $1.7M | 808,335 | 0.00% | new | NEW |
| Rafferty Asset Management, LLC | $1.7M | 785,365 | 0.00% | 21q | -41.7%-$1.2M |
| DEUTSCHE BANK AG\ | $1.6M | 764,362 | 0.00% | 31q | +76.9%+$701.0K |
| Creative Planning | $1.6M | 739,780 | 0.00% | 9q | +43.9%+$476.1K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $1.5M | 727,804 | 0.00% | 31q | +9.6%+$134.8K |
| RHUMBLINE ADVISERS | $1.5M | 717,198 | 0.00% | 31q | +21.5%+$268.2K |
| Lombard Odier Asset Management (USA) Corp | $1.5M CALL | options only | 0.20% | 5q | OPTIONS |
| Raiffeisen Bank International AG | $1.5M | 700,000 | 0.02% | 7q | HELD |
| MACKENZIE FINANCIAL CORP | $1.4M | 675,000 | 0.00% | new | NEW |
| HARBOR CAPITAL ADVISORS, INC. | $1.4M | 669,796 | 0.10% | 13q | +2.5%+$34.5K |
| BOOTHBAY FUND MANAGEMENT, LLC | $1.2M | 548,200 | 0.02% | 2q | -27.8%-$446.3K |
| Banco Santander, S.A. | $1.1M | 525,378 | 0.01% | 7q | +321.9%+$845.8K |
| AMERIPRISE FINANCIAL INC | $1.1M | 522,847 | 0.00% | 31q | -25.3%-$373.8K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $1.0M | 488,839 | 0.00% | 31q | +41.9%+$304.8K |
| Moors & Cabot, Inc. | $968.4K | 458,950 | 0.04% | 12q | +4.6%+$42.2K |
| Numerai GP LLC | $928.6K | 440,088 | 0.08% | 3q | +42.1%+$275.0K |
| State of New Jersey Common Pension Fund D | $852.1K | 403,830 | 0.00% | new | NEW |
| Caption Management, LLC | $848.6K incl. $764.2K options CALL | 40,000 | 0.00% | new | NEW |
| VANGUARD ASSET MANAGEMENT, Ltd | $828.8K | 392,801 | 0.00% | 2q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $820.7K | 388,967 | 0.00% | 9q | +8.4%+$63.9K |
| CITIGROUP INC | $820.0K | 388,632 | 0.00% | 31q | -37.7%-$495.9K |
| JPMORGAN CHASE & CO | $817.5K | 393,010 | 0.00% | 31q | -84.6%-$4.5M |
| Mariner, LLC | $753.7K | 357,246 | 0.00% | 18q | +255.6%+$541.8K |
| Legal & General Group Plc | $742.0K | 351,680 | 0.00% | 31q | +19.4%+$120.5K |
| MetLife Investment Management, LLC | $735.4K | 348,509 | 0.00% | 25q | +46.3%+$232.9K |
| Verdence Capital Advisors LLC | $726.4K | 344,279 | 0.04% | 2q | -2.2%-$16.6K |
| Headlands Technologies LLC | $725.9K | 344,019 | 0.08% | 2q | +12.2%+$79.0K |
| IEQ CAPITAL, LLC | $720.9K | 341,681 | 0.00% | 2q | +644.9%+$624.2K |
| AXQ CAPITAL, LP | $712.7K | 337,762 | 0.08% | 2q | +86.6%+$330.7K |
| PEAK6 LLC | $706.9K | 335,034 | 0.00% | 2q | +243.1%+$500.9K |
| Inspire Investing, LLC | $688.1K | 326,131 | 0.03% | 4q | +77.8%+$301.1K |
| Brevan Howard Capital Management LP | $643.2K | 304,827 | 0.00% | 7q | +166.6%+$401.9K |
| MERCER GLOBAL ADVISORS INC /ADV | $619.3K | 293,522 | 0.00% | 18q | +44.2%+$189.9K |
| Vanguard Global Advisers, LLC | $611.2K | 289,665 | 0.00% | 2q | +25.6%+$124.5K |
| KLP KAPITALFORVALTNING AS | $547.8K | 259,600 | 0.00% | 7q | +9.4%+$46.8K |
| Dalton Investments, Inc. | $527.5K | 250,000 | 0.48% | 3q | HELD |
Showing the largest 100 of 273 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | INGLIS ANDREW G | Chairman and CEO | Sold | 85,935 | $176.2K |
| 2026-05-28 | Franklin Roy A. | Director | Sold | 43,466 | $118.7K |
| 2026-05-27 | Grant John Douglas Kelso | Director | Sold | 43,466 | $118.7K |
| 2026-05-27 | Sterin Steven | Director | Sold | 38,636 | $105.5K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 41 | $9.9M | 3,885,796 | 4 | 10 | 16 | 0.0% |
| Q2 2026 | 273 | $939.1M | 431,020,546 | 49 | 119 | 66 | 3.2% |
| Q1 2026 | 266 | $1.2B | 434,158,669 | 79 | 85 | 56 | 3.0% |
| Q4 2025 | 211 | $317.0M | 341,657,392 | 25 | 57 | 86 | 1.9% |
| Q3 2025 | 237 | $678.3M | 397,909,649 | 30 | 77 | 74 | 2.2% |
| Q2 2025 | 230 | $729.3M | 414,498,562 | 30 | 83 | 68 | 2.0% |
| Q1 2025 | 256 | $1.0B | 435,616,999 | 42 | 97 | 69 | 3.2% |
| Q4 2024 | 269 | $1.5B | 435,371,190 | 38 | 104 | 69 | 0.7% |
| Q3 2024 | 270 | $1.8B | 445,856,089 | 45 | 99 | 74 | 0.7% |
| Q2 2024 | 274 | $2.5B | 447,137,647 | 56 | 100 | 66 | 0.9% |
| Q1 2024 | 249 | $2.8B | 461,180,214 | 50 | 78 | 70 | 0.9% |
| Q4 2023 | 247 | $3.0B | 442,540,172 | 42 | 86 | 69 | 0.4% |
| Q3 2023 | 227 | $3.6B | 431,938,719 | 34 | 81 | 66 | 0.5% |
| Q2 2023 | 238 | $2.5B | 421,538,166 | 42 | 81 | 69 | 0.4% |
| Q1 2023 | 234 | $3.7B | 493,039,266 | 31 | 81 | 77 | 0.4% |
| Q4 2022 | 240 | $2.6B | 403,010,994 | 39 | 68 | 83 | 0.6% |
| Q3 2022 | 221 | $19.9B | 3,837,173,523 | 29 | 88 | 60 | 0.4% |
| Q2 2022 | 224 | $12.0B | 1,925,921,849 | 59 | 56 | 74 | 0.3% |
| Q1 2022 | 196 | $20.0B | 2,781,667,215 | 55 | 61 | 55 | 0.1% |
| Q4 2021 | 166 | $3.7B | 1,067,813,483 | 30 | 72 | 34 | 0.2% |
| Q3 2021 | 151 | $1.6B | 530,847,879 | 19 | 50 | 51 | 0.2% |
| Q2 2021 | 165 | $1.5B | 448,383,508 | 44 | 42 | 49 | 0.2% |
| Q1 2021 | 133 | $1.7B | 550,262,184 | 21 | 36 | 52 | 0.1% |
| Q4 2020 | 127 | $2.4B | 1,006,256,174 | 18 | 38 | 49 | 0.1% |
| Q3 2020 | 122 | $912.5M | 933,066,110 | 10 | 33 | 52 | 0.0% |
| Q2 2020 | 145 | $1.6B | 949,508,561 | 33 | 53 | 42 | 0.1% |
| Q1 2020 | 154 | $737.6M | 819,765,663 | 20 | 65 | 50 | 0.2% |
| Q4 2019 | 199 | $5.5B | 957,201,239 | 44 | 80 | 44 | 0.2% |
| Q3 2019 | 174 | $5.6B | 904,681,792 | 26 | 68 | 48 | 0.0% |
| Q2 2019 | 170 | $7.4B | 1,181,221,142 | 41 | 72 | 34 | 0.1% |
| Q1 2019 | 169 | $6.3B | 1,015,541,656 | 56 | 60 | 35 | 0.1% |
| Q4 2018 | 146 | $1.5B | 377,398,758 | 6 | 0 | 0 | 0.1% |
