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Riverstone Advisors’s Costco COST Stock Holding History

Riverstone Advisors’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
Q2 		$775K Buy
829
+88
+12% +$87.7K 0.32% 33
2026
Q1 		$738K Buy
741
+31
+4% +$30.2K 0.36% 31
2025
Q4 		$612K Sell
710
-22
-3% -$19.9K 0.29% 29
2025
Q3 		$678K Buy
732
+6
+0.8% +$5.75K 0.33% 26
2025
Q2 		$719K Buy
726
+2
+0.3% +$1.99K 0.39% 25
2025
Q1 		$685K Buy
724
+35
+5% +$34.1K 0.41% 27
2024
Q4 		$631K Buy
689
+176
+34% +$163K 0.36% 26
2024
Q3 		$455K Buy
513
+70
+16% +$60.8K 0.26% 29
2024
Q2 		$377K Buy
443
+114
+35% +$89K 0.23% 32
2024
Q1 		$241K Buy
329
+16
+5% +$11.4K 0.14% 39
2023
Q4 		$207K Buy
+313
New +$186K 0.13% 48

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Riverstone Advisors's COST Position: Q2 2026 in Review

Riverstone Advisors increased its Costco (COST) stake by 12% in Q2 2026, buying an estimated $87.7K and bringing the position to 829 shares worth $775K. The position accounts for 0.32% of the portfolio, ranked #33.

Riverstone Advisors first reported a position in COST in Q4 2023 and has held it in 11 quarters since. 4,247 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Riverstone Advisors held 829 shares of Costco worth $775K as of Q2 2026.
  • Riverstone Advisors bought 88 Costco shares in Q2 2026, an estimated $87.7K.
  • Costco made up 0.32% of Riverstone Advisors's portfolio in Q2 2026, its #33 holding.
  • Riverstone Advisors first reported a position in Costco in Q4 2023 and has held it in 11 quarters since.
  • 4,247 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Riverstone Advisors's 13F filing for Q2 2026, filed 6 Aug 2026.