UBS O'Connor’s Costco COST Stock Holding History

UBS O'Connor’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
2015 Q4	–	Sell	-56,000	Closed	-$68K	–	435
2015 Q3	$68K	Buy	+56,000	New	+$7.99M	﹤0.01%	470

Other funds holding COST

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

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 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

UBS O'Connor's COST Position: Q3 2025 in Review

UBS O'Connor sold out of Costco (COST) in Q3 2025, closing a stake of 1,000 shares — an estimated $990K sold.

UBS O'Connor first reported a position in COST in Q2 2013 and held it in 7 quarters. The position peaked at $39M in Q2 2013. 3,934 funds tracked by Wall St. Rank hold COST as of Q3 2025.

UBS O'Connor reported no remaining Costco position as of Q3 2025 after selling out during the quarter.
UBS O'Connor sold 1,000 Costco shares in Q3 2025, an estimated $990K.
UBS O'Connor first reported a position in Costco in Q2 2013 and held it in 7 quarters.
UBS O'Connor's Costco position peaked at $39M in Q2 2013.
3,934 funds tracked by Wall St. Rank held Costco as of Q3 2025.

Based on UBS O'Connor's 13F filing for Q3 2025, filed 14 Nov 2025.