KOS · Kosmos Energy Ltd. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding KOS
All superinvestors →Holder Concentration
Across 271 13F filersWho Holds KOS
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 268 filers, like-for-like change -0.7%; actively managed books -7.5%; index-like books +14.8%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 45.8% | 140 | -0.7% |
| Exempt adviser | 0.7% | 5 | +36.4% |
| Adviser | 5.4% | 4 | -22.5% |
| Bank | 11.8% | 13 | -0.6% |
| Insurer | 0.0% | 2 | +91.6% |
| Broker-dealer | 0.4% | 4 | +22.3% |
| Benefit plan | 0.2% | 4 | -3.7% |
| Non-US | 0.5% | 6 | +105.6% |
| Holding company | 18.8% | 10 | +15.4% |
| Unknown | 16.4% | 80 | -9.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 35.3% | 37 | +14.8% |
| Systematic-like | 15.5% | 26 | -2.9% |
| Concentrated | 5.7% | 33 | -13.0% |
| Diversified active | 43.5% | 172 | -8.3% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 49.1% | 141 | +5.6% |
| Medium turnover | 25.8% | 60 | +14.2% |
| High turnover | 19.4% | 51 | -27.7% |
| Unknown | 5.7% | 16 | +20.3% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 6.8% | 38 | -21.9% |
| Medium horizon | 24.9% | 53 | +12.5% |
| Long horizon | 58.2% | 161 | -1.5% |
| Unknown | 10.0% | 16 | -6.2% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 7.3% | 50 | -6.8% |
| $1B to $10B | 6.1% | 77 | -34.2% |
| $10B to $100B | 16.6% | 79 | -3.2% |
| $100B or more | 70.0% | 62 | +5.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.0% | 65 | +47.2% |
| Pooled investment vehicles | 20.4% | 37 | -8.5% |
| Registered funds and BDCs | 20.7% | 18 | +5.5% |
| Pension and profit sharing plans | 0.1% | 3 | +7.0% |
| Insurance companies | 0.1% | 3 | +43.6% |
| Governments and sovereign funds | 0.7% | 3 | +69.4% |
| Other investment advisers | 0.1% | 4 | -16.7% |
| Other | 0.0% | 1 | new |
| Diversified | 3.0% | 7 | +24.8% |
| Corporations | 0.0% | 0 | — |
| Unknown | 54.0% | 127 | -2.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 27.7% | 43 | -9.5% |
| Private equity funds | 0.4% | 12 | +79.9% |
| Venture capital funds | 0.0% | 2 | +24.2% |
| Real estate funds | 0.0% | 4 | +401.4% |
| Liquidity funds | 0.0% | 1 | 0.0% |
| Securitized asset funds | 0.5% | 1 | -45.1% |
| Other private funds | 4.5% | 18 | +32.6% |
| Mixed private funds | 0.1% | 1 | +29.8% |
| Private funds, type not stated | 0.5% | 3 | +1.9% |
| No private funds | 12.6% | 60 | +17.1% |
| Unknown | 53.5% | 123 | -1.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 92.1% | 219 | +0.7% |
| Outside the US | 7.9% | 49 | -14.7% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
268 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 36.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies KOS's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | YPF Ypf Sociedad Anonima | 3 |
| 2 | CNR Core Natural Resources, Inc. | 3 |
| 3 | SQM Chemical & Mining Co Of Chile Inc | 3 |
| 4 | VIST Vista Energy, S.A.B. de C.V. | 3 |
| 5 | GLNG Golar Lng Ltd | 3 |
| 6 | FLR Fluor Corp | 3 |
| 7 | SEI Solaris Energy Infrastructure, Inc. | 3 |
| 8 | PBR Petrobras - Petroleo Brasileiro SA | 3 |
| 9 | TLN Talen Energy Corp | 3 |
| 10 | OMC Omnicom Group Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not KOS, quarter ended Jun 30, 2026Found through its holder-overlap peers: YPF, CNR, SQM, VIST, GLNG, FLR, SEI, PBR, TLN, OMC, CRH, BABA, B, MDT, CCJ, NBIS, NVDA, APP, GOOGL, CMCSA. 6,816 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | NORGES BANK Non-US, Index-like | $128,291,051,417 11 held | NVDA, GOOGL, CMCSA |
| 2 | Capital Research Global Investors Adviser, Diversified active | $85,784,381,509 9 held | NVDA, GOOGL, CMCSA |
| 3 | Capital World Investors Adviser, Diversified active | $77,890,561,667 13 held | GOOGL, NVDA, APP |
| 4 | Capital International Investors Adviser, Diversified active | $47,474,767,186 9 held | GOOGL, NVDA, B |
| 5 | Berkshire Hathaway Inc Insurer, Concentrated | $37,764,088,381 1 held | GOOGL |
| 6 | Fisher Asset Management, LLC Adviser, Diversified active | $33,750,422,188 10 held | NVDA, GOOGL, BABA |
| 7 | HSBC HOLDINGS PLC Unknown, Index-like | $28,933,145,295 17 held | NVDA, GOOGL, BABA |
| 8 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active | $27,799,130,289 13 held | NVDA, GOOGL, MDT |
| 9 | JENNISON ASSOCIATES LLC Registered adviser, Diversified active | $26,840,023,105 8 held | NVDA, GOOGL, NBIS |
| 10 | BANK OF MONTREAL /CAN/ Bank, Diversified active | $23,997,538,459 18 held | GOOGL, NVDA, B |
Fund Ownership of KOS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 15.62% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.23% | 19,212,536 |
| Index ETFs | 12.39% | 73,795,561 |
| Active ETFs | 0.93% | 5,514,017 |
| Active funds | 8.61% | 51,264,472 |
| Unclassified | 0.71% | 4,204,475 |
| All registered funds | 25.86% | 153,991,061 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $118,209,621 | 12.74% | 56,023,521 | Shares | 2026-08-07 | |
| Mega STATE STREET CORP Bank | $62,145,863 | 6.70% | 29,453,016 | Shares | 2026-09-22 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $53,589,974 | 5.77% | 25,398,092 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $51,775,829 | 5.58% | 24,538,308 | Shares | 2026-08-14 | |
| Small Equinox Partners Investment Management LLC Registered adviser | $43,630,649 | 4.70% | 20,678,033 | Shares | 2026-08-14 | |
| Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Registered adviser | $39,762,487 | 4.28% | 18,844,781 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $36,010,542 | 3.88% | 17,066,608 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $29,053,995 | 3.13% | 13,769,666 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $25,320,881 | 2.73% | 12,000,418 | Shares | 2026-08-13 | |
| Large Grantham, Mayo, Van Otterloo & Co. LLC Adviser | $25,003,761 | 2.69% | 11,850,124 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $23,102,468 | 2.49% | 10,949,038 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $20,219,880 | 2.18% | 9,582,883 | Shares | 2026-08-11 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $18,002,406 | 1.94% | 8,531,947 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $16,956,970 | 1.83% | 8,036,479 | Shares | 2026-08-12 | |
| Mid Davidson Kempner Capital Management LP Registered adviser | $16,880,681 | 1.82% | 8,000,323 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $15,676,656 | 1.69% | 7,429,695 | Shares | 2026-08-14 | |
| Large M&G PLC Holding company | $15,634,439 | 1.68% | 7,409,687 | Shares | 2026-08-06 | |
| Mega MORGAN STANLEY Holding company | $15,530,501 | 1.67% | 7,360,428 | Shares | 2026-08-13 | |
| Mega Nuveen, LLC | $15,467,326 | 1.67% | 7,330,487 | Shares | 2026-08-11 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $14,788,289 | 1.59% | 7,008,668 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $14,374,927 | 1.55% | 6,812,762 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $12,827,663 | 1.38% | 6,079,462 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $11,209,201 | 1.21% | 5,312,419 | Shares | 2026-08-13 | |
| Large Bridgewater Associates, LP Registered adviser | $9,960,360 | 1.07% | 4,720,550 | Shares | 2026-08-14 | |
| Mega Boston Partners Registered adviser | $8,645,625 | 0.93% | 4,097,453 | Shares | 2026-08-04 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $8,625,119 | 0.93% | 4,087,736 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $8,468,027 | 0.91% | 4,013,283 | Shares | 2026-08-11 | |
| Mid OSTRUM ASSET MANAGEMENT | $8,457,987 | 0.91% | 4,008,525 | Shares | 2026-08-13 | |
| Large VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. Registered adviser | $8,457,987 | 0.91% | 4,008,525 | Shares | 2026-07-16 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $7,346,969 | 0.79% | 3,481,976 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7,082,584 | 0.76% | 3,356,675 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $6,187,606 | 0.67% | 2,932,515 | Shares | 2026-08-14 | |
| Small GeoSphere Capital Management, LLC Registered adviser | $5,937,092 | 0.64% | 2,813,788 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $5,578,511 | 0.60% | 2,643,845 | Shares | 2026-08-06 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $5,255,372 | 0.57% | 2,490,698 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $4,814,441 | 0.52% | 2,281,727 | Shares | 2026-08-13 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $4,341,935 | 0.47% | 2,057,790 | Shares | 2026-08-14 | |
| Large NOMURA HOLDINGS INC | $4,281,837 | 0.46% | 2,029,307 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,276,759 | 0.46% | 2,026,900 | Put | 2026-08-14 | |
| Small Ballast Asset Management, LP | $4,237,202 | 0.46% | 2,008,153 | Shares | 2026-08-13 | |
| Large Point72 Asset Management, L.P. Registered adviser | $4,172,993 | 0.45% | 1,977,722 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $3,913,252 | 0.42% | 1,854,622 | Shares | 2026-08-06 | |
| Mega BARCLAYS PLC Bank | $3,658,334 | 0.39% | 1,733,808 | Shares | 2026-08-14 | |
| Large Gotham Asset Management, LLC Registered adviser | $3,356,102 | 0.36% | 1,590,570 | Shares | 2026-08-14 | |
| Large LMR Partners LLP Exempt adviser | $3,176,290 | 0.34% | 1,505,351 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC Broker-dealer | $2,906,362 | 0.31% | 1,377,423 | Shares | 2026-08-07 | |
| Large Squarepoint Ops LLC Registered adviser | $2,904,490 | 0.31% | 1,376,536 | Shares | 2026-08-14 | |
| Mid CenterBook Partners LP Registered adviser | $2,773,649 | 0.30% | 1,314,526 | Shares | 2026-08-11 | |
| Mega Swiss National Bank | $2,448,444 | 0.26% | 1,160,400 | Shares | 2026-08-11 | |
| Large Man Group plc | $2,411,381 | 0.26% | 1,142,835 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $2,408,987 | 0.26% | 1,141,700 | Call | 2026-09-02 | |
| Small GRATIA CAPITAL, LLC Exempt adviser | $2,399,703 | 0.26% | 1,137,300 | Call | 2026-08-14 | |
| Mega FMR LLC Holding company | $2,355,041 | 0.25% | 1,116,134 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2,299,900 | 0.25% | 1,090,000 | Call | 2026-08-14 | |
| Mid Purpose Unlimited Inc. | $2,236,600 | 0.24% | 1,060,000 | Shares | 2026-08-13 | |
| Mid Susquehanna Portfolio Strategies, LLC | $2,179,600 | 0.23% | 1,032,986 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $2,110,502 | 0.23% | 1,000,238 | Shares | 2026-08-14 | |
| Small FIRST SABREPOINT CAPITAL MANAGEMENT LP Registered adviser | $2,110,000 | 0.23% | 1,000,000 | Shares | 2026-08-14 | |
| Small GRATIA CAPITAL, LLC Exempt adviser | $2,033,360 | 0.22% | 963,678 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $2,026,022 | 0.22% | 960,200 | Put | 2026-09-02 | |
| Small PLUSTICK MANAGEMENT LLC Registered adviser | $1,899,000 | 0.20% | 900,000 | Shares | 2026-08-14 | |
| Mid J. Goldman & Co LP Registered adviser | $1,846,461 | 0.20% | 875,100 | Call | 2026-08-14 | |
| Mega SG Americas Securities, LLC | $1,807,027 | 0.19% | 856,411 | Shares | 2026-08-07 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $1,705,586 | 0.18% | 808,335 | Shares | 2026-08-13 | |
| Large Rafferty Asset Management, LLC Registered adviser | $1,657,120 | 0.18% | 785,365 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $1,612,802 | 0.17% | 764,362 | Shares | 2026-08-07 | |
| Mega Creative Planning Registered adviser | $1,560,934 | 0.17% | 739,780 | Shares | 2026-08-13 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $1,535,666 | 0.17% | 727,804 | Shares | 2026-08-24 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $1,513,287 | 0.16% | 717,198 | Shares | 2026-08-12 | |
| Mega JANE STREET GROUP, LLC | $1,489,871 | 0.16% | 706,100 | Call | 2026-08-14 | |
| Mid Raiffeisen Bank International AG | $1,477,000 | 0.16% | 700,000 | Shares | 2026-08-03 | |
| Small Lombard Odier Asset Management (USA) Corp Registered adviser | $1,477,000 | 0.16% | 700,000 | Call | 2026-08-14 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $1,424,250 | 0.15% | 675,000 | Shares | 2026-08-13 | |
| Mid HARBOR CAPITAL ADVISORS, INC. Registered adviser | $1,413,269 | 0.15% | 669,796 | Shares | 2026-08-07 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $1,350,104 | 0.15% | 639,860 | Shares | 2026-08-14 | |
| Large IMC-Chicago, LLC | $1,193,662 | 0.13% | 565,717 | Shares | 2026-08-06 | |
| Mid BOOTHBAY FUND MANAGEMENT, LLC Registered adviser | $1,156,702 | 0.12% | 548,200 | Shares | 2026-08-14 | |
| Large Banco Santander, S.A. Bank | $1,108,547 | 0.12% | 525,378 | Shares | 2026-07-29 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $1,103,206 | 0.12% | 522,847 | Shares | 2026-08-14 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $1,031,450 | 0.11% | 488,839 | Shares | 2026-08-14 | |
| Mid Moors & Cabot, Inc. Registered adviser | $968,384 | 0.10% | 458,950 | Shares | 2026-08-10 | |
| Mid Numerai GP LLC Registered adviser | $928,585 | 0.10% | 440,088 | Shares | 2026-08-14 | |
| Large State of New Jersey Common Pension Fund D | $852,081 | 0.09% | 403,830 | Shares | 2026-08-04 | |
| Mega JPMORGAN CHASE & CO Bank | $829,249 | 0.09% | 393,010 | Shares | 2026-08-12 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $828,810 | 0.09% | 392,801 | Shares | 2026-08-13 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $820,720 | 0.09% | 388,967 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $820,012 | 0.09% | 388,632 | Shares | 2026-08-03 | |
| Large Caption Management, LLC Registered adviser | $764,242 | 0.08% | 362,200 | Call | 2026-08-14 | |
| Large Mariner, LLC Registered adviser | $753,789 | 0.08% | 357,246 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $742,044 | 0.08% | 351,680 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $735,353 | 0.08% | 348,509 | Shares | 2026-08-14 | |
| Mid Verdence Capital Advisors LLC Registered adviser | $726,428 | 0.08% | 344,279 | Shares | 2026-07-29 | |
| Small Headlands Technologies LLC | $725,880 | 0.08% | 344,019 | Shares | 2026-08-13 | |
| Large IEQ CAPITAL, LLC Registered adviser | $720,946 | 0.08% | 341,681 | Shares | 2026-08-11 | |
| Small AXQ CAPITAL, LP Registered adviser | $712,677 | 0.08% | 337,762 | Shares | 2026-08-06 | |
| Large PEAK6 LLC Broker-dealer | $706,921 | 0.08% | 335,034 | Shares | 2026-08-13 | |
| Mid Inspire Investing, LLC Registered adviser | $688,136 | 0.07% | 326,131 | Shares | 2026-08-12 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $643,184 | 0.07% | 304,827 | Shares | 2026-08-14 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $619,331 | 0.07% | 293,522 | Shares | 2026-08-19 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $611,193 | 0.07% | 289,665 | Shares | 2026-08-13 |
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