Latest Period
Q1 2026
Security Snapshot
Kosmos Energy Ltd. - Common Stock (KOS) Institutional Ownership
CUSIP: 500688106
13F Institutional Holders and Ownership History from Q3 2018 to Q1 2026
Institutions Reporting
255
Shares (Excl. Options)
433,538,757
Price
$2.78
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Type / Class
- Equity / Common Stock
- Symbol
- KOS on NYSE
- Shares outstanding
- 579,358,165
- Price per share
- $2.81
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 433,538,757
- Total reported value
- $1,207,512,816
- % of total 13F portfolios
- 0.01%
- Share change
- +88,188,511
- Value change
- +$253,853,916
- Number of holders
- 255
- Price from insider filings
- $2.81
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- KOS - Kosmos Energy Ltd. - Common Stock is tracked under CUSIP 500688106.
- 255 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 207 to 255 between Q4 2025 and Q1 2026.
- Reported value moved from $310,785,907 to $1,207,512,816.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 255 institutions filings for Q1 2026.
Investment Quick Answers
What is CUSIP 500688106?
CUSIP 500688106 identifies KOS - Kosmos Energy Ltd. - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q1 2026 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 500688106:
Significant Owners of Kosmos Energy Ltd. - Common Stock (KOS) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 6.7% | -15% | $110,663,888 | +$5,696,868 | 39,807,154 | +5.4% | BlackRock, Inc. | 31 Mar 2026 |
| cobas asset management, sgiic, s.a. | 5.2% | $42,620,828 | 24,779,551 | cobas asset management, sgiic, s.a. | 10 Apr 2025 | |||
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 4.4% | -18% | $45,390,842 | -$9,237,154 | 21,210,674 | -17% | Hotchkis and Wiley Capital Management, LLC | 30 Jun 2025 |
| Grantham, Mayo, Van Otterloo & Co. LLC | 3.2% | -59% | $50,712,379 | -$45,630,900 | 18,307,718 | -47% | Grantham, Mayo, Van Otterloo & Co. LLC | 31 Mar 2026 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC | 2.4% | -66% | $14,012,882 | -$27,416,815 | 11,300,711 | -66% | American Century Investment Management, Inc. | 31 Dec 2025 |
| FMR LLC | 2.1% | $16,907,343 | 9,829,851 | FMR LLC | 29 Nov 2024 | |||
| BlackRock Portfolio Management LLC | 1.7% | -77% | $7,523,689 | -$19,976,061 | 8,291,480 | -73% | BlackRock Portfolio Management LLC | 31 Dec 2025 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | 0.84% | -90% | $6,933,604 | -$36,259,955 | 4,031,165 | -84% | Vaughan Nelson Investment Management, L.P. | 31 Mar 2025 |
As of 31 Mar 2026, 255 institutional investors reported holding 433,538,757 shares of Kosmos Energy Ltd. - Common Stock (KOS). This represents 75% of the company’s total 579,358,165 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Kosmos Energy Ltd. - Common Stock (KOS) together control 56% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.2% | 47,463,094 | +1.3% | 0% | $131,947,401 |
| STATE STREET CORP | 4.9% | 28,247,797 | +38% | 0% | $78,528,876 |
| Equinox Partners Investment Management LLC | 3.6% | 20,678,033 | +6.2% | 23% | $57,484,932 |
| D. E. Shaw & Co., Inc. | 3.5% | 20,385,745 | +242% | 0.04% | $56,672,372 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 3.5% | 20,051,601 | -0.29% | 0.17% | $55,743,451 |
| TWO SIGMA INVESTMENTS, LP | 3.2% | 18,680,328 | +385% | 0.04% | $51,931,312 |
| Grantham, Mayo, Van Otterloo & Co. LLC | 3.2% | 18,307,718 | -47% | 0.13% | $50,895,456 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.4% | 14,135,448 | +17% | 0.01% | $39,296,545 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 12,714,055 | +13% | 0% | $35,352,863 |
| MILLENNIUM MANAGEMENT LLC | 2.2% | 12,632,904 | -15% | 0.03% | $35,119,473 |
| JANE STREET GROUP, LLC | 2% | 11,743,115 | +27% | 0.04% | $32,645,859 |
| Invesco Ltd. | 1.9% | 11,150,239 | +496% | 0% | $30,997,665 |
| GOLDMAN SACHS GROUP INC | 1.6% | 9,261,696 | +37% | 0% | $25,747,514 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5% | 8,619,103 | 0% | 0% | $23,961,106 |
| Davidson Kempner Capital Management LP | 1.5% | 8,419,986 | 0.5% | $23,407,561 | |
| FIRST TRUST ADVISORS LP | 1.3% | 7,694,248 | +9.2% | 0.02% | $21,390,009 |
| DIMENSIONAL FUND ADVISORS LP | 1.2% | 7,083,075 | +20% | 0% | $19,699,423 |
| M&G PLC | 1.2% | 7,031,872 | -20% | 0.11% | $21,095,616 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1% | 6,422,390 | 0% | 0% | $17,854,244 |
| Russell Investments Group, Ltd. | 1% | 5,857,655 | -0.48% | 0.02% | $16,284,280 |
| MORGAN STANLEY | 1% | 5,837,077 | +24% | 0% | $16,227,075 |
| BANK OF AMERICA CORP /DE/ | 0.96% | 5,541,020 | +44% | 0% | $15,404,036 |
| RENAISSANCE TECHNOLOGIES LLC | 0.92% | 5,339,638 | +224% | 0.02% | $14,844,194 |
| UBS Group AG | 0.83% | 4,812,090 | -22% | 0% | $13,377,610 |
| Boston Partners | 0.82% | 4,756,571 | 0.01% | $13,346,008 |
Institutional Holders of Kosmos Energy Ltd. - Common Stock (KOS) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 433,538,757 | $1,207,512,816 | +$253,853,916 | $2.78 | 255 |
| 2025 Q4 | 341,624,965 | $310,785,907 | -$58,814,526 | $0.91 | 207 |
| 2025 Q3 | 397,567,149 | $662,697,681 | -$27,310,559 | $1.66 | 232 |
| 2025 Q2 | 414,211,641 | $714,259,765 | -$53,936,011 | $1.72 | 222 |
| 2025 Q1 | 435,420,001 | $990,831,898 | -$24,178,044 | $2.28 | 247 |
| 2024 Q4 | 434,467,418 | $1,483,228,559 | -$41,595,189 | $3.42 | 266 |
| 2024 Q3 | 445,143,829 | $1,793,908,427 | -$35,616,618 | $4.03 | 264 |
| 2024 Q2 | 446,530,055 | $2,476,397,361 | -$48,197,743 | $5.54 | 267 |
| 2024 Q1 | 455,144,754 | $2,712,853,408 | +$129,674,838 | $5.96 | 242 |
| 2023 Q4 | 432,591,755 | $2,903,078,114 | -$14,250,348 | $6.71 | 243 |
| 2023 Q3 | 431,942,937 | $3,529,846,448 | +$111,284,980 | $8.18 | 221 |
| 2023 Q2 | 420,903,235 | $2,522,367,786 | -$29,709,707 | $5.99 | 235 |
| 2023 Q1 | 424,739,511 | $3,157,589,069 | +$162,486,630 | $7.44 | 230 |
| 2022 Q4 | 403,898,858 | $2,569,050,464 | +$18,268,299 | $6.36 | 233 |
| 2022 Q3 | 398,851,012 | $2,063,155,651 | +$16,879,335 | $5.17 | 214 |
| 2022 Q2 | 394,546,108 | $2,441,878,683 | -$2,958,258 | $6.19 | 220 |
| 2022 Q1 | 394,415,075 | $2,834,637,427 | +$148,440,024 | $7.19 | 195 |
| 2021 Q4 | 375,249,027 | $1,298,202,086 | +$192,827,880 | $3.46 | 163 |
| 2021 Q3 | 319,646,092 | $943,564,890 | -$17,871,692 | $2.96 | 151 |
| 2021 Q2 | 324,685,181 | $1,117,940,409 | -$10,284,939 | $3.46 | 162 |
| 2021 Q1 | 328,137,069 | $1,006,040,087 | +$13,891,889 | $3.07 | 133 |
| 2020 Q4 | 323,688,887 | $756,831,249 | -$2,539,903 | $2.35 | 125 |
| 2020 Q3 | 326,413,372 | $320,421,360 | -$20,793,540 | $0.98 | 121 |
| 2020 Q2 | 341,416,082 | $574,126,979 | +$15,634,738 | $1.66 | 143 |
| 2020 Q1 | 338,225,456 | $304,731,750 | -$203,393,161 | $0.90 | 148 |
| 2019 Q4 | 367,566,762 | $2,096,939,940 | -$138,288,418 | $5.70 | 199 |
| 2019 Q3 | 374,874,627 | $2,336,578,355 | -$71,065,823 | $6.24 | 172 |
| 2019 Q2 | 387,127,586 | $2,424,196,549 | +$53,126,717 | $6.27 | 167 |
| 2019 Q1 | 378,402,705 | $2,356,924,305 | +$269,065,757 | $6.23 | 163 |
| 2018 Q4 | 340,677,853 | $1,386,451,754 | +$1,373,607,709 | $4.07 | 130 |
| 2018 Q3 | 2,855,405 | $26,698,000 | +$26,698,037 | $9.35 | 1 |