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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
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 $137B AUM 18.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Tortoise Investment Management's COST Position: Q1 2026 in Review

Tortoise Investment Management reduced its Costco (COST) stake by 11% in Q1 2026, selling an estimated $164K and leaving 1,430 shares worth $1.42M. The position accounts for 0.12% of the portfolio, ranked #109.

Tortoise Investment Management first reported a position in COST in Q2 2013 and has held it in 52 quarters since. The position peaked at $1.5M in Q2 2025. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Tortoise Investment Management held 1,430 shares of Costco worth $1.42M as of Q1 2026.
  • Tortoise Investment Management sold 168 Costco shares in Q1 2026, an estimated $164K.
  • Costco made up 0.12% of Tortoise Investment Management's portfolio in Q1 2026, its #109 holding.
  • Tortoise Investment Management first reported a position in Costco in Q2 2013 and has held it in 52 quarters since.
  • Tortoise Investment Management's Costco position peaked at $1.5M in Q2 2025.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Tortoise Investment Management's 13F filing for Q1 2026, filed 5 May 2026.