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Jeremy Grantham's Kosmos Energy Ltd. (KOS) position

Yes: as of Q1 2026, Jeremy Grantham holds 18.3M shares of KOS worth $51M (0.1% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$51M
Shares held
18.3M
% of portfolio
0.1%
Est. average buy price (i)
$3.85
est. since Q1 2021
Quarter-end price
$2.77

Estimated trade prices

Average price in quarters with purchases
$4.03
Average prices in quarters with sales
  • Q1 2026: $1.88 (16.5M shares sold)
  • Q3 2025: $1.87 (2.0M shares sold)
  • Q2 2025: $1.81 (3.1M shares sold)
  • Q1 2023: $7.32 (2.7M shares sold)
  • Q4 2022: $6.25 (322K shares sold)
  • Q2 2022: $7.21 (4.0M shares sold)
  • Q1 2022: $5.10 (4.9M shares sold)
  • Q4 2021: $3.59 (554K shares sold)

KOS price vs Grantham's position

1Y 3Y 5Y MAX
Dates
$0.8$5$1020222023202420252026Added 7.7M shares (36.5%) · Q3 2021. Average closing price $2.44 · Price range $1.84–$3.617.7MsharespurchasedSold 554K shares (1.9%) · Q4 2021. Average closing price $3.59 · Price range $2.88–$4.18554KsharessoldSold 4.9M shares (17.5%) · Q1 2022. Average closing price $5.10 · Price range $3.82–$7.194.9MsharessoldSold 4.0M shares (17.1%) · Q2 2022. Average closing price $7.21 · Price range $6.03–$8.414.0MsharessoldAdded 2.5M shares (13.1%) · Q3 2022. Average closing price $6.06 · Price range $4.68–$7.592.5MsharespurchasedSold 322K shares (1.5%) · Q4 2022. Average closing price $6.25 · Price range $5.50–$7.32322KsharessoldSold 2.7M shares (12.4%) · Q1 2023. Average closing price $7.32 · Price range $5.99–$8.552.7MsharessoldAdded 897K shares (4.8%) · Q2 2023. Average closing price $6.51 · Price range $5.42–$7.91897KsharespurchasedAdded 2.7M shares (13.7%) · Q3 2023. Average closing price $7.09 · Price range $5.94–$8.212.7MsharespurchasedAdded 796K shares (3.6%) · Q4 2023. Average closing price $7.00 · Price range $6.09–$7.74796KsharespurchasedAdded 271K shares (1.2%) · Q1 2024. Average closing price $6.01 · Price range $5.40–$6.87271KsharespurchasedAdded 1.8M shares (7.8%) · Q2 2024. Average closing price $5.83 · Price range $5.21–$6.331.8MsharespurchasedAdded 1.5M shares (5.9%) · Q3 2024. Average closing price $4.87 · Price range $3.70–$5.841.5MsharespurchasedAdded 5.9M shares (22.1%) · Q4 2024. Average closing price $3.80 · Price range $2.71–$4.515.9MsharespurchasedAdded 7.3M shares (22.3%) · Q1 2025. Average closing price $2.95 · Price range $2.12–$3.907.3MsharespurchasedSold 3.1M shares (7.7%) · Q2 2025. Average closing price $1.81 · Price range $1.52–$2.283.1MsharessoldSold 2.0M shares (5.5%) · Q3 2025. Average closing price $1.87 · Price range $1.62–$2.392.0MsharessoldAdded 23K shares (under 0.1%) · Q4 2025. Average closing price $1.32 · Price range $0.87–$1.8723KsharespurchasedSold 16.5M shares (47.4%) · Q1 2026. Average closing price $1.88 · Price range $0.89–$2.9816.5Msharessold← Earlier —1 purchase
Average closing price · filing quarter
$1.88
Price range · filing quarter
$0.89 – $2.98
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −16.5M −$31M −47.4% 18.3M May 14, 2026
Q4 2025 Added +23K +$31K +0.1% 34.8M Feb 17, 2026
Q3 2025 Reduced −2.0M −$3.8M −5.5% 34.8M Nov 13, 2025
Q2 2025 Reduced −3.1M −$5.6M −7.7% 36.8M Aug 13, 2025
Q1 2025 Added +7.3M +$21M +22.3% 39.9M May 14, 2025
Q4 2024 Added +5.9M +$22M +22.1% 32.6M Feb 13, 2025
Q3 2024 Added +1.5M +$7.2M +5.9% 26.7M Nov 13, 2024
Q2 2024 Added +1.8M +$11M +7.8% 25.2M Aug 13, 2024
Q1 2024 Added +271K +$1.6M +1.2% 23.4M May 14, 2024
Q4 2023 Added +796K +$5.6M +3.6% 23.1M Feb 13, 2024
Q3 2023 Added +2.7M +$19M +13.7% 22.3M Nov 13, 2023
Q2 2023 Added +897K +$5.8M +4.8% 19.6M Aug 14, 2023
Q1 2023 Reduced −2.7M −$19M −12.4% 18.8M May 12, 2023
Q4 2022 Reduced −322K −$2.0M −1.5% 21.4M Feb 13, 2023
Q3 2022 Added +2.5M +$15M +13.1% 21.7M Nov 10, 2022
Q2 2022 Reduced −4.0M −$29M −17.1% 19.2M Aug 12, 2022
Q1 2022 Reduced −4.9M −$25M −17.5% 23.2M May 13, 2022
Q4 2021 Reduced −554K −$2.0M −1.9% 28.1M Feb 11, 2022
Q3 2021 Added +7.7M +$19M +36.5% 28.7M Nov 12, 2021
Q2 2021 Added +1.7M +$5.4M +9.0% 21.0M Aug 12, 2021
Q1 2021 First covered – – – 19.3M May 13, 2021
Data through Q1 2026 · filed May 14, 2026
21 grouped rows from 21 quarters

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Common questions

Does Jeremy Grantham own KOS?

Yes. As of Q1 2026, Jeremy Grantham disclosed 18.3M shares of KOS, worth $51M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy KOS?

Jeremy Grantham held KOS since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jeremy Grantham sell KOS?

The quarter-by-quarter table above shows each sale and reduction Jeremy Grantham disclosed in KOS. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of KOS does Jeremy Grantham own?

Jeremy Grantham disclosed 18.3M shares of KOS as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jeremy Grantham pay for KOS?

Jeremy Grantham began building the KOS position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.