Ostrum Asset Management’s Kosmos Energy KOS Stock Holding History

Ostrum Asset Management’s Portfolio KOS Stock Details KOS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$8.46M	Hold	4,008,525	–	–	0.41%	37
2026 Q1	$11.1M	Hold	4,008,525	–	–	0.63%	31
2025 Q4	$3.64M	Hold	4,008,525	–	–	0.17%	86
2025 Q3	$6.65M	Hold	4,008,525	–	–	0.3%	52
2025 Q2	$6.89M	Hold	4,008,525	–	–	0.32%	47
2025 Q1	$9.14M	Buy	+4,008,525	New	+$11.8M	0.48%	31

Other funds holding KOS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

EPIM

Equinox Partners Investment Management Stamford, Connecticut $212M AUM 153.42% 1-Year Est. Return

Hotchkis & Wiley Capital Management Los Angeles, California $34.3B AUM 22.63% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $44.4B AUM 36.05% 1-Year Est. Return

Ostrum Asset Management's KOS Position: Q2 2026 in Review

Ostrum Asset Management held its Kosmos Energy (KOS) position steady in Q2 2026 at 4,008,525 shares worth $8.46M. The position accounts for 0.41% of the portfolio, ranked #37.

Ostrum Asset Management first reported a position in KOS in Q1 2025 and has held it in 6 quarters since. The position peaked at $11.1M in Q1 2026. 267 funds tracked by Wall St. Rank hold KOS as of Q2 2026.

Ostrum Asset Management held 4,008,525 shares of Kosmos Energy worth $8.46M as of Q2 2026.
Ostrum Asset Management left its Kosmos Energy share count unchanged in Q2 2026.
Kosmos Energy made up 0.41% of Ostrum Asset Management's portfolio in Q2 2026, its #37 holding.
Ostrum Asset Management first reported a position in Kosmos Energy in Q1 2025 and has held it in 6 quarters since.
Ostrum Asset Management's Kosmos Energy position peaked at $11.1M in Q1 2026.
267 funds tracked by Wall St. Rank held Kosmos Energy as of Q2 2026.

Based on Ostrum Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.