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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
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
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
EPIM
Equinox Partners Investment Management Stamford, Connecticut $245M AUM 225.58% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Ostrum Asset Management's KOS Position: Q1 2026 in Review

Ostrum Asset Management held its Kosmos Energy (KOS) position steady in Q1 2026 at 4,008,525 shares worth $11.1M. The position accounts for 0.63% of the portfolio, ranked #31.

Ostrum Asset Management first reported a position in KOS in Q1 2025 and has held it in 5 quarters since. 262 funds tracked by Wall St. Rank hold KOS as of Q1 2026.

  • Ostrum Asset Management held 4,008,525 shares of Kosmos Energy worth $11.1M as of Q1 2026.
  • Ostrum Asset Management left its Kosmos Energy share count unchanged in Q1 2026.
  • Kosmos Energy made up 0.63% of Ostrum Asset Management's portfolio in Q1 2026, its #31 holding.
  • Ostrum Asset Management first reported a position in Kosmos Energy in Q1 2025 and has held it in 5 quarters since.
  • 262 funds tracked by Wall St. Rank held Kosmos Energy as of Q1 2026.

Based on Ostrum Asset Management's 13F filing for Q1 2026, filed 14 May 2026.