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Carderock Capital Management’s Costco COST Stock Holding History

Carderock Capital 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
Q2 		$10.1M Buy
10,821
+1,105
+11% +$1.1M 2.22% 17
2026
Q1 		$9.68M Buy
9,716
+228
+2% +$222K 2.39% 14
2025
Q4 		$8.18M Buy
9,488
+109
+1% +$98.8K 1.98% 26
2025
Q3 		$8.68M Buy
9,379
+169
+2% +$162K 2.11% 16
2025
Q2 		$9.12M Sell
9,210
-1,517
-14% -$1.51M 2.34% 12
2025
Q1 		$10.1M Sell
10,727
-171
-2% -$167K 2.69% 7
2024
Q4 		$9.99M Sell
10,898
-437
-4% -$405K 2.5% 10
2024
Q3 		$10M Buy
11,335
+459
+4% +$398K 2.37% 12
2024
Q2 		$9.24M Buy
10,876
+347
+3% +$271K 2.42% 12
2024
Q1 		$7.71M Sell
10,529
-585
-5% -$418K 2.16% 23
2023
Q4 		$7.34M Sell
11,114
-186
-2% -$110K 2.03% 25
2023
Q3 		$6.38M Buy
11,300
+90
+0.8% +$49.7K 2.14% 21
2023
Q2 		$6.04M Buy
11,210
+217
+2% +$110K 1.87% 26
2023
Q1 		$5.46M Sell
10,993
-1,172
-10% -$575K 1.9% 24
2022
Q4 		$5.55M Sell
12,165
-170
-1% -$83.1K 2.3% 17
2022
Q3 		$5.83M Sell
12,335
-1,662
-12% -$864K 2.97% 8
2022
Q2 		$6.71M Sell
13,997
-512
-4% -$260K 2.8% 8
2022
Q1 		$8.36M Sell
14,509
-2,604
-15% -$1.37M 2.7% 6
2021
Q4 		$9.71M Buy
17,113
+254
+2% +$130K 2.33% 12
2021
Q3 		$7.58M Buy
16,859
+222
+1% +$97.6K 2.14% 14
2021
Q2 		$6.58M Buy
16,637
+223
+1% +$84.3K 1.81% 21
2021
Q1 		$5.79M Buy
16,414
+46
+0.3% +$16K 1.73% 25
2020
Q4 		$6.17M Buy
16,368
+108
+0.7% +$40.4K 1.86% 16
2020
Q3 		$5.77M Sell
16,260
-446
-3% -$150K 1.95% 20
2020
Q2 		$5.07M Sell
16,706
-28
-0.2% -$8.52K 1.87% 24
2020
Q1 		$4.77M Sell
16,734
-1
-0% -$303 2.19% 17
2019
Q4 		$4.92M Sell
16,735
-406
-2% -$121K 1.65% 31
2019
Q3 		$4.94M Sell
17,141
-81
-0.5% -$22.8K 1.82% 25
2019
Q2 		$4.55M Buy
17,222
+511
+3% +$127K 1.72% 28
2019
Q1 		$4.05M Buy
16,711
+3,673
+28% +$803K 1.65% 30
2018
Q4 		$2.66M Sell
13,038
-18
-0.1% -$4.02K 1.37% 39
2018
Q3 		$3.07M Sell
13,056
-14
-0.1% -$3.15K 1.21% 43
2018
Q2 		$2.73M Buy
13,070
+127
+1% +$25.1K 1.18% 41
2018
Q1 		$2.44M Buy
12,943
+1,080
+9% +$204K 1.08% 44
2017
Q4 		$2.21M Sell
11,863
-724
-6% -$125K 0.97% 46
2017
Q3 		$2.07M Sell
12,587
-4,868
-28% -$765K 0.93% 46
2017
Q2 		$2.79M Buy
17,455
+489
+3% +$84.3K 1.26% 39
2017
Q1 		$2.85M Sell
16,966
-207
-1% -$34.7K 1.32% 39
2016
Q4 		$2.75M Sell
17,173
-1,803
-10% -$275K 1.37% 36
2016
Q3 		$2.89M Buy
18,976
+12,360
+187% +$2M 1.45% 33
2016
Q2 		$1.04M Buy
6,616
+277
+4% +$41.9K 0.55% 54
2016
Q1 		$999K Buy
6,339
+6
+0.1% +$909 0.51% 53
2015
Q4 		$1.02M Buy
+6,333
New +$1M 0.53% 53
2014
Q2 		– Sell
-116
Closed -$13K – 111
2014
Q1 		$13K Buy
+116
New +$13.3K 0.01% 186

Other funds holding COST

Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $37.4B AUM 35.42% 1-Year Est. Return
EA
Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return
New York State Common Retirement Fund
New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return
PTC
Provident Trust Company Waukesha, Wisconsin $4.77B AUM 29.31% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Commonwealth Equity Services
Commonwealth Equity Services Waltham, Massachusetts $79.5B AUM 27.1% 1-Year Est. Return

Carderock Capital Management's COST Position: Q2 2026 in Review

Carderock Capital Management increased its Costco (COST) stake by 11% in Q2 2026, buying an estimated $1.1M and bringing the position to 10,821 shares worth $10.1M. The position accounts for 2.22% of the portfolio, ranked #17.

Carderock Capital Management first reported a position in COST in Q1 2014 and has held it in 44 quarters since. The position peaked at $10.1M in Q1 2025. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Carderock Capital Management held 10,821 shares of Costco worth $10.1M as of Q2 2026.
  • Carderock Capital Management bought 1,105 Costco shares in Q2 2026, an estimated $1.1M.
  • Costco made up 2.22% of Carderock Capital Management's portfolio in Q2 2026, its #17 holding.
  • Carderock Capital Management first reported a position in Costco in Q1 2014 and has held it in 44 quarters since.
  • Carderock Capital Management's Costco position peaked at $10.1M in Q1 2025.
  • 2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Carderock Capital Management's 13F filing for Q2 2026, filed 7 Jul 2026.