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Ostrum Asset Management’s Costco COST Stock Holding History

Ostrum Asset Management’s Portfolio COST Stock Details COST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.89M Sell
1,893
-1,585
-46% -$1.54M 0.11% 151
2025
Q4 		$3M Sell
3,478
-874
-20% -$792K 0.14% 113
2025
Q3 		$4.03M Buy
4,352
+126
+3% +$121K 0.18% 94
2025
Q2 		$4.18M Sell
4,226
-494
-10% -$491K 0.2% 92
2025
Q1 		$4.46M Buy
4,720
+1,633
+53% +$1.59M 0.24% 72
2024
Q4 		$2.83M Sell
3,087
-200
-6% -$186K 0.25% 118
2024
Q3 		$2.91M Sell
3,287
-1,345
-29% -$1.17M 0.24% 135
2024
Q2 		$3.94M Buy
4,632
+1,114
+32% +$869K 0.34% 67
2024
Q1 		$2.58M Buy
3,518
+142
+4% +$101K 0.2% 171
2023
Q4 		$2.23M Sell
3,376
-492
-13% -$292K 0.19% 174
2023
Q3 		$2.19M Sell
3,868
-3,463
-47% -$1.91M 0.2% 166
2023
Q2 		$3.95M Sell
7,331
-68
-0.9% -$34.4K 0.33% 81
2023
Q1 		$3.68M Buy
+7,399
New +$3.63M 0.32% 90
2020
Q3 		– Sell
-6,300
Closed -$1.91M – 59
2020
Q2 		$1.91M Hold
6,300
– – 1.14% 23
2020
Q1 		$1.8M Sell
6,300
-4,700
-43% -$1.43M 1.24% 19
2019
Q4 		$3.23M Hold
11,000
– – 1.54% 13
2019
Q3 		$3.17M Buy
+11,000
New +$3.1M 1.59% 15

Other funds holding COST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
DAM
Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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

Ostrum Asset Management reduced its Costco (COST) stake by 46% in Q1 2026, selling an estimated $1.54M and leaving 1,893 shares worth $1.89M. The position accounts for 0.11% of the portfolio, ranked #151.

Ostrum Asset Management first reported a position in COST in Q3 2019 and has held it in 17 quarters since. The position peaked at $4.46M in Q1 2025. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Ostrum Asset Management held 1,893 shares of Costco worth $1.89M as of Q1 2026.
  • Ostrum Asset Management sold 1,585 Costco shares in Q1 2026, an estimated $1.54M.
  • Costco made up 0.11% of Ostrum Asset Management's portfolio in Q1 2026, its #151 holding.
  • Ostrum Asset Management first reported a position in Costco in Q3 2019 and has held it in 17 quarters since.
  • Ostrum Asset Management's Costco position peaked at $4.46M in Q1 2025.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

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