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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
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 $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 $147M AUM 25.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Riverstone Advisors's COST Position: Q1 2026 in Review

Riverstone Advisors increased its Costco (COST) stake by 4.4% in Q1 2026, buying an estimated $30.2K and bringing the position to 741 shares worth $738K. The position accounts for 0.36% of the portfolio, ranked #31.

Riverstone Advisors first reported a position in COST in Q4 2023 and has held it in 10 quarters since. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Riverstone Advisors held 741 shares of Costco worth $738K as of Q1 2026.
  • Riverstone Advisors bought 31 Costco shares in Q1 2026, an estimated $30.2K.
  • Costco made up 0.36% of Riverstone Advisors's portfolio in Q1 2026, its #31 holding.
  • Riverstone Advisors first reported a position in Costco in Q4 2023 and has held it in 10 quarters since.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Riverstone Advisors's 13F filing for Q1 2026, filed 21 Apr 2026.