KOS — KOSMOS ENERGY LTD

Ownership history in Grantham, Mayo, Van Otterloo & Co. LLC  ·  23 quarters on record

AI Ownership Summary

Grantham, Mayo, Van Otterloo & Co. LLC reported KOSMOS ENERGY LTD (KOS) in 23 quarterly 13F filings from 2023 Q3 through 2025 Q4. Peak portfolio weight reached 0.86% in 2023 Q3. The latest visible filing shows KOS at 0.08% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this KOS ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Grantham, Mayo, Van Otterloo & Co. LLC's position in KOSMOS ENERGY LTD, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

KOS was reported at 0.08% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.86% in 2023 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q3 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

KOS stock page Grantham, Mayo, Van Otterloo & Co. LLC fund profile Grantham, Mayo, Van Otterloo & Co. LLC full holdings
How Grantham, Mayo, Van Otterloo & Co. LLC held KOS — position size vs. price
% of Fund (quarterly)    KOS price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 34,804,317 +23,350 +0.1% 0.08% $31.6M 2026-02-14 (Est.) $1.68
2025 Q3 REDUCED 34,780,967 -2,039,300 -5.5% 0.16% $57.7M 2025-11-13 $1.44
2025 Q2 REDUCED 36,820,267 -3,067,561 -7.7% 0.19% $63.3M 2025-08-13 $1.76
2025 Q1 ADDED 39,887,828 +7,260,261 +22.3% 0.29% $90.9M 2025-05-14 $1.99
2024 Q4 ADDED 32,627,567 +5,906,210 +22.1% 0.36% $111.6M 2025-02-13 $3.10
2024 Q3 ADDED 26,721,357 +1,488,031 +5.9% 0.34% $107.7M 2024-11-13 $3.89
2024 Q2 ADDED 25,233,326 +1,827,807 +7.8% 0.47% $139.8M 2024-08-13 $4.92
2024 Q1 ADDED 23,405,519 +271,339 +1.2% 0.51% $139.5M 2024-05-14 $6.10
2023 Q4 ADDED 23,134,180 +796,126 +3.6% 0.69% $155.2M 2024-02-13 $5.54
2023 Q3 ADDED 22,338,054 +2,690,342 +13.7% 0.86% $182.7M 2023-11-13 $6.93
13 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding KOS

As of 2025 Q4 — sorted by position size

Equinox Partners Investment Management LLC 3Y 7Y 9.23% GRATIA CAPITAL, LLC 3Y 7Y 1.02% Ballast Asset Management, LP 0.78% Dalton Investments, Inc. 3Y 7Y 0.34% OSTRUM ASSET MANAGEMENT 3Y 7Y 0.17% CLOVERFIELDS CAPITAL GROUP, LP 3Y 0.08% Nantahala Capital Management, LLC 3Y 7Y 0.07% Lombard Odier Asset Management (USA) Corp 3Y 7Y 0.06% HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 3Y 7Y 0.05% M&G Plc 0.04%

FAQ About Grantham, Mayo, Van Otterloo & Co. LLC and KOS

These are the practical questions this page is built to answer before you even open the full history table.

How long has Grantham, Mayo, Van Otterloo & Co. LLC reported owning KOS?

Grantham, Mayo, Van Otterloo & Co. LLC reported KOS across 10 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported KOS position in Grantham, Mayo, Van Otterloo & Co. LLC's portfolio?

The largest reported portfolio weight for KOS was 0.86% in 2023 Q3.

What is the latest reported KOS position on this page?

The most recent filing on this page is 2025 Q4, when Grantham, Mayo, Van Otterloo & Co. LLC reported 34,804,317 shares, equal to 0.08% of portfolio, with an estimated market value of $31.6M.

What does the chart on this KOS ownership page compare?

The chart compares Grantham, Mayo, Van Otterloo & Co. LLC's quarterly KOS portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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