TIA
COST icon

Tandem Investment Advisors’s Costco COST Stock Holding History

Tandem Investment Advisors’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 		$31.5M Sell
33,676
-9,736
-22% -$9.7M 2.11% 24
2026
Q1 		$43.3M Sell
43,412
-7,379
-15% -$7.19M 2.12% 23
2025
Q4 		$43.8M Sell
50,791
-1,861
-4% -$1.69M 1.63% 27
2025
Q3 		$48.7M Buy
52,652
+9,741
+23% +$9.34M 1.66% 27
2025
Q2 		$42.5M Buy
42,911
+62
+0.1% +$61.6K 1.49% 29
2025
Q1 		$40.5M Buy
42,849
+1,921
+5% +$1.87M 1.41% 32
2024
Q4 		$37.5M Sell
40,928
-11,327
-22% -$10.5M 1.42% 30
2024
Q3 		$46.3M Sell
52,255
-1,533
-3% -$1.33M 1.76% 28
2024
Q2 		$45.7M Sell
53,788
-1,323
-2% -$1.03M 1.82% 27
2024
Q1 		$40.4M Sell
55,111
-19,836
-26% -$14.2M 1.56% 32
2023
Q4 		$49.5M Sell
74,947
-3,730
-5% -$2.21M 1.98% 30
2023
Q3 		$44.4M Buy
78,677
+5,186
+7% +$2.86M 1.88% 30
2023
Q2 		$39.6M Sell
73,491
-769
-1% -$389K 1.74% 31
2023
Q1 		$36.9M Sell
74,260
-1,236
-2% -$606K 1.77% 29
2022
Q4 		$34.5M Buy
75,496
+5,150
+7% +$2.52M 1.78% 28
2022
Q3 		$33.2M Buy
70,346
+4,621
+7% +$2.4M 1.89% 29
2022
Q2 		$31.5M Sell
65,725
-12,687
-16% -$6.44M 1.86% 28
2022
Q1 		$45.2M Buy
78,412
+8,673
+12% +$4.55M 2.77% 20
2021
Q4 		$39.6M Buy
69,739
+4,983
+8% +$2.55M 2.57% 23
2021
Q3 		$29.1M Buy
64,756
+1,538
+2% +$676K 2.38% 23
2021
Q2 		$25M Sell
63,218
-498
-0.8% -$188K 2.14% 23
2021
Q1 		$22.5M Buy
63,716
+8,956
+16% +$3.12M 2.16% 24
2020
Q4 		$20.6M Buy
54,760
+7,554
+16% +$2.82M 2.22% 24
2020
Q3 		$16.8M Sell
47,206
-286
-0.6% -$96.1K 2.05% 25
2020
Q2 		$14.4M Sell
47,492
-5,436
-10% -$1.65M 1.94% 25
2020
Q1 		$15.1M Buy
52,928
+6,213
+13% +$1.89M 2.24% 24
2019
Q4 		$13.7M Buy
46,715
+1,054
+2% +$313K 2.3% 22
2019
Q3 		$13.2M Sell
45,661
-10,437
-19% -$2.94M 2.38% 23
2019
Q2 		$14.8M Buy
56,098
+1,457
+3% +$363K 2.81% 19
2019
Q1 		$13.2M Buy
54,641
+4,448
+9% +$973K 2.92% 18
2018
Q4 		$10.2M Sell
50,193
-6,728
-12% -$1.5M 2.65% 21
2018
Q3 		$13.4M Buy
56,921
+1,209
+2% +$272K 3.67% 9
2018
Q2 		$11.6M Sell
55,712
-1,500
-3% -$296K 3.56% 10
2018
Q1 		$10.8M Buy
57,212
+2,605
+5% +$491K 3.51% 9
2017
Q4 		$10.2M Sell
54,607
-330
-0.6% -$57K 3.48% 10
2017
Q3 		$9.03M Sell
54,937
-262
-0.5% -$41.2K 3.4% 10
2017
Q2 		$8.83M Buy
55,199
+3,618
+7% +$623K 3.5% 9
2017
Q1 		$8.65M Buy
51,581
+4,548
+10% +$762K 3.83% 7
2016
Q4 		$7.53M Buy
+47,033
New +$7.18M 3.63% 9

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Tandem Investment Advisors's COST Position: Q2 2026 in Review

Tandem Investment Advisors reduced its Costco (COST) stake by 22% in Q2 2026, selling an estimated $9.7M and leaving 33,676 shares worth $31.5M. The position accounts for 2.11% of the portfolio, ranked #24.

Tandem Investment Advisors first reported a position in COST in Q4 2016 and has held it in 39 quarters since. The position peaked at $49.5M in Q4 2023. 4,224 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Tandem Investment Advisors held 33,676 shares of Costco worth $31.5M as of Q2 2026.
  • Tandem Investment Advisors sold 9,736 Costco shares in Q2 2026, an estimated $9.7M.
  • Costco made up 2.11% of Tandem Investment Advisors's portfolio in Q2 2026, its #24 holding.
  • Tandem Investment Advisors first reported a position in Costco in Q4 2016 and has held it in 39 quarters since.
  • Tandem Investment Advisors's Costco position peaked at $49.5M in Q4 2023.
  • 4,224 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Tandem Investment Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.