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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
2026
Q1 		$1.42M Sell
1,430
-168
-11% -$164K 0.12% 109
2025
Q4 		$1.38M Buy
1,598
+72
+5% +$65.2K 0.12% 112
2025
Q3 		$1.41M Buy
1,526
+10
+0.7% +$9.59K 0.13% 103
2025
Q2 		$1.5M Buy
1,516
+31
+2% +$30.8K 0.14% 96
2025
Q1 		$1.4M Sell
1,485
-92
-6% -$89.7K 0.15% 96
2024
Q4 		$1.44M Sell
1,577
-4
-0.3% -$3.71K 0.15% 95
2024
Q3 		$1.4M Buy
1,581
+5
+0.3% +$4.34K 0.15% 98
2024
Q2 		$1.34M Hold
1,576
– – 0.15% 97
2024
Q1 		$1.15M Sell
1,576
-177
-10% -$126K 0.14% 103
2023
Q4 		$1.16M Sell
1,753
-37
-2% -$21.9K 0.16% 97
2023
Q3 		$1.01M Sell
1,790
-7
-0.4% -$3.86K 0.15% 100
2023
Q2 		$967K Hold
1,797
– – 0.14% 104
2023
Q1 		$893K Hold
1,797
– – 0.14% 105
2022
Q4 		$820K Sell
1,797
-3
-0.2% -$1.47K 0.14% 108
2022
Q3 		$850K Sell
1,800
-37
-2% -$19.2K 0.17% 99
2022
Q2 		$880K Sell
1,837
-84
-4% -$42.6K 0.17% 99
2022
Q1 		$1.11M Buy
1,921
+7
+0.4% +$3.67K 0.2% 90
2021
Q4 		$1.09M Sell
1,914
-100
-5% -$51.2K 0.2% 76
2021
Q3 		$905K Buy
2,014
+244
+14% +$107K 0.18% 81
2021
Q2 		$700K Sell
1,770
-233
-12% -$88.1K 0.14% 87
2021
Q1 		$706K Hold
2,003
– – 0.16% 82
2020
Q4 		$755K Sell
2,003
-100
-5% -$37.4K 0.17% 79
2020
Q3 		$747K Sell
2,103
-50
-2% -$16.8K 0.18% 79
2020
Q2 		$653K Sell
2,153
-43
-2% -$13.1K 0.17% 79
2020
Q1 		$626K Buy
2,196
+125
+6% +$37.9K 0.18% 80
2019
Q4 		$609K Hold
2,071
– – 0.14% 82
2019
Q3 		$597K Sell
2,071
-100
-5% -$28.1K 0.15% 85
2019
Q2 		$574K Hold
2,171
– – 0.15% 89
2019
Q1 		$526K Buy
2,171
+18
+0.8% +$3.94K 0.14% 86
2018
Q4 		$439K Hold
2,153
– – 0.12% 95
2018
Q3 		$506K Hold
2,153
– – 0.13% 92
2018
Q2 		$450K Buy
2,153
+150
+7% +$29.6K 0.12% 98
2018
Q1 		$377K Hold
2,003
– – 0.1% 104
2017
Q4 		$373K Buy
2,003
+18
+0.9% +$3.11K 0.11% 102
2017
Q3 		$326K Buy
1,985
+1,350
+213% +$212K 0.1% 104
2017
Q2 		$102K Hold
635
– – 0.03% 160
2017
Q1 		$106K Hold
635
– – 0.03% 146
2016
Q4 		$102K Hold
635
– – 0.04% 144
2016
Q3 		$97K Hold
635
– – 0.03% 140
2016
Q2 		$100K Hold
635
– – 0.03% 139
2016
Q1 		$100K Hold
635
– – 0.04% 135
2015
Q4 		$103K Buy
635
+100
+19% +$15.8K 0.04% 143
2015
Q3 		$77K Hold
535
– – 0.03% 167
2015
Q2 		$72K Sell
535
-19
-3% -$2.73K 0.03% 180
2015
Q1 		$84K Sell
554
-1
-0.2% -$147 0.03% 172
2014
Q4 		$79K Buy
555
+20
+4% +$2.72K 0.03% 177
2014
Q3 		$67K Hold
535
– – 0.03% 185
2014
Q2 		$62K Hold
535
– – 0.03% 193
2014
Q1 		$60K Sell
535
-300
-36% -$34.3K 0.03% 177
2013
Q4 		$99K Buy
835
+400
+92% +$47.8K 0.05% 136
2013
Q3 		$50K Hold
435
– – 0.03% 150
2013
Q2 		$48K Buy
+435
New +$47.6K 0.03% 149

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.