Tortoise Investment Management’s Costco COST Stock Holding History

Tortoise Investment 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
2025 Q3	–	Sell	-300	Closed	-$2.98K	–	1563
2025 Q2	$2.98K	Buy	+300	New	+$298K	﹤0.01%	723
2022 Q3	–	Sell	-200	Closed	-$8K	–	751
2022 Q2	$8K	Sell	200 -300	-60%	-$152K	﹤0.01%	542
2022 Q1	$3K	Sell	500 -100	-17%	-$52.5K	﹤0.01%	611
2021 Q4	$4K	Buy	600 +300	+100%	+$154K	﹤0.01%	555
2021 Q3	$3K	Buy	+300	New	+$132K	﹤0.01%	563

Other funds holding COST

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Tortoise Investment Management's COST Position: Q2 2026 in Review

Tortoise Investment Management increased its Costco (COST) stake by 0.98% in Q2 2026, buying an estimated $13.9K and bringing the position to 1,444 shares worth $1.35M. The position accounts for 0.1% of the portfolio, ranked #118.

Tortoise Investment Management first reported a position in COST in Q2 2013 and has held it in 53 quarters since. The position peaked at $1.5M in Q2 2025. 4,256 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Tortoise Investment Management held 1,444 shares of Costco worth $1.35M as of Q2 2026.
Tortoise Investment Management bought 14 Costco shares in Q2 2026, an estimated $13.9K.
Costco made up 0.1% of Tortoise Investment Management's portfolio in Q2 2026, its #118 holding.
Tortoise Investment Management first reported a position in Costco in Q2 2013 and has held it in 53 quarters since.
Tortoise Investment Management's Costco position peaked at $1.5M in Q2 2025.
4,256 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Tortoise Investment Management's 13F filing for Q2 2026, filed 7 Aug 2026.