ABC Arbitrage’s Costco COST Stock Holding History

ABC Arbitrage’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
2025 Q3	–	Sell	-645	Closed	-$639K	–	219
2025 Q2	$639K	Buy	+645	New	+$641K	0.07%	174

Other funds holding COST

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return

ABC Arbitrage's COST Position: Q3 2025 in Review

ABC Arbitrage sold out of Costco (COST) in Q3 2025, closing a stake of 645 shares — an estimated $639K sold.

ABC Arbitrage first reported a position in COST in Q2 2025 and held it in 1 quarter. The position peaked at $639K in Q2 2025. 3,932 funds tracked by Wall St. Rank hold COST as of Q3 2025.

ABC Arbitrage reported no remaining Costco position as of Q3 2025 after selling out during the quarter.
ABC Arbitrage sold 645 Costco shares in Q3 2025, an estimated $639K.
ABC Arbitrage first reported a position in Costco in Q2 2025 and held it in 1 quarter.
ABC Arbitrage's Costco position peaked at $639K in Q2 2025.
3,932 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on ABC Arbitrage's 13F filing for Q3 2025, filed 6 Nov 2025.