Who owns Kosmos Energy Ltd.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of KOS from SEC Form 13F filings across 268 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 268 institutions disclosed 430.9M shares of Kosmos Energy Ltd. worth $909.1M — about 72.6% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
268
13F holders
$909.1M
value, 2026 filers
72.6%
of shares outstanding (430.9M sh)
52
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of KOS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 56.0M | $118.2M | 0.0% | 9.4% | +18.0% |
| 2 | STATE STREET CORP | 29.5M | $62.1M | 0.0% | 5% | +4.3% |
| 3 | TWO SIGMA INVESTMENTS, LP | 25.4M | $53.6M | 0.0% | 4.3% | +36.0% |
| 4 | D. E. Shaw & Co., Inc. | 24.5M | $51.8M | 0.0% | 4.1% | +20.4% |
| 5 | Equinox Partners Investment Management LLC | 20.7M | $43.6M | 20.5% | 3.5% | 0.0% |
| 6 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 18.8M | $39.8M | 0.1% | 3.2% | -6.0% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 17.1M | $36.0M | 0.0% | 2.9% | +34.2% |
| 8 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 13.8M | $29.1M | 0.0% | 2.3% | -2.6% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 12.0M | $25.3M | 0.0% | 2% | +39.2% |
| 10 | Grantham, Mayo, Van Otterloo & Co. LLC | 11.9M | $25.0M | 0.1% | 2% | -35.3% |
| 11 | Invesco Ltd. | 10.9M | $23.1M | 0.0% | 1.8% | -1.8% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 9.6M | $20.2M | 0.0% | 1.6% | +35.3% |
| 13 | GOLDMAN SACHS GROUP INC | 8.5M | $18.0M | 0.0% | 1.4% | -7.9% |
| 14 | AMERICAN CENTURY COMPANIES INC | 8.0M | $17.0M | 0.0% | 1.4% | +8083.6% |
| 15 | Davidson Kempner Capital Management LP | 8.0M | $16.9M | 0.2% | 1.3% | -5.0% |
| 16 | MILLENNIUM MANAGEMENT LLC | 7.4M | $15.7M | 0.0% | 1.3% | -41.2% |
| 17 | M&G PLC | 7.4M | $14.8M | 0.1% | 1.2% | +5.4% |
| 18 | MORGAN STANLEY | 7.4M | $15.5M | 0.0% | 1.2% | +26.1% |
| 19 | Nuveen, LLC | 7.3M | $15.5M | 0.0% | 1.2% | +121.2% |
| 20 | RENAISSANCE TECHNOLOGIES LLC | 7.0M | $14.8M | 0.0% | 1.2% | +31.3% |
| 21 | VANGUARD CAPITAL MANAGEMENT LLC | 6.8M | $14.4M | 0.0% | 1.1% | +6.1% |
| 22 | UBS Group AG | 6.1M | $12.8M | 0.0% | 1% | +26.3% |
| 23 | NORTHERN TRUST CORP | 5.3M | $11.2M | 0.0% | 0.9% | +25.5% |
| 24 | Bridgewater Associates, LPNEW | 4.7M | $10.0M | 0.0% | 0.8% | new |
| 25 | Boston Partners | 4.1M | $8.9M | 0.0% | 0.7% | -13.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.