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Rational Advisors’s Costco COST Stock Holding History

Rational 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 		$2.36M Sell
2,522
-256
-9% -$255K 0.22% 67
2026
Q1 		$2.77M Sell
2,778
-710
-20% -$692K 0.28% 54
2025
Q4 		$3.01M Sell
3,488
-826
-19% -$749K 0.31% 58
2025
Q3 		$3.99M Buy
4,314
+91
+2% +$87.2K 0.4% 48
2025
Q2 		$4.18M Buy
4,223
+106
+3% +$105K 0.41% 46
2025
Q1 		$3.89M Buy
4,117
+448
+12% +$437K 0.39% 41
2024
Q4 		$3.36M Sell
3,669
-30
-0.8% -$27.8K 0.33% 51
2024
Q3 		$3.28M Sell
3,699
-340
-8% -$295K 0.32% 47
2024
Q2 		$3.43M Buy
4,039
+174
+5% +$136K 0.33% 47
2024
Q1 		$2.83M Sell
3,865
-647
-14% -$462K 0.26% 51
2023
Q4 		$2.98M Buy
4,512
+113
+3% +$67K 0.3% 38
2023
Q3 		$2.49M Sell
4,399
-550
-11% -$304K 0.23% 54
2023
Q2 		$2.66M Buy
4,949
+1,055
+27% +$534K 0.22% 49
2023
Q1 		$1.93M Sell
3,894
-2,897
-43% -$1.42M 0.16% 55
2022
Q4 		$3.1M Sell
6,791
-1,310
-16% -$640K 0.26% 34
2022
Q3 		$3.83M Sell
8,101
-995
-11% -$518K 0.3% 30
2022
Q2 		$4.36M Sell
9,096
-113
-1% -$57.3K 0.31% 26
2022
Q1 		$5.3M Buy
9,209
+5,335
+138% +$2.8M 0.31% 29
2021
Q4 		$2.2M Sell
3,874
-4,000
-51% -$2.05M 0.13% 56
2021
Q3 		$3.54M Buy
7,874
+500
+7% +$220K 0.28% 33
2021
Q2 		$2.92M Buy
7,374
+3,000
+69% +$1.13M 0.34% 35
2021
Q1 		$1.54M Sell
4,374
-2,847
-39% -$991K 0.28% 63
2020
Q4 		$2.72M Buy
7,221
+1,755
+32% +$656K 0.73% 26
2020
Q3 		$1.94M Buy
5,466
+1,111
+26% +$373K 0.83% 32
2020
Q2 		$1.32M Buy
4,355
+1,358
+45% +$413K 0.68% 43
2020
Q1 		$854K Sell
2,997
-1,440
-32% -$437K 0.62% 49
2019
Q4 		$1.3M Sell
4,437
-1,759
-28% -$523K 0.61% 50
2019
Q3 		$1.79M Buy
6,196
+2,647
+75% +$745K 0.69% 37
2019
Q2 		$937K Buy
3,549
+2,122
+149% +$529K 0.33% 112
2019
Q1 		$345K Sell
1,427
-1,099
-44% -$240K 0.09% 163
2018
Q4 		$515K Sell
2,526
-1,308
-34% -$292K 0.16% 113
2018
Q3 		$901K Sell
3,834
-28
-0.7% -$6.31K 0.22% 108
2018
Q2 		$807K Buy
3,862
+242
+7% +$47.8K 0.38% 97
2018
Q1 		$682K Buy
3,620
+1,392
+62% +$263K 0.32% 112
2017
Q4 		$415K Buy
2,228
+628
+39% +$108K 0.22% 148
2017
Q3 		$263K Sell
1,600
-5,042
-76% -$792K 0.14% 170
2017
Q2 		$1.06M Buy
+6,642
New +$1.14M 0.66% 46
2015
Q3 		$191K Buy
1,322
+330
+33% +$47.1K 0.08% 167
2015
Q2 		$134K Sell
992
-112
-10% -$16.1K 0.04% 196
2015
Q1 		$167K Sell
1,104
-176
-14% -$25.8K 0.04% 199
2014
Q4 		$181K Buy
+1,280
New +$174K 0.04% 228
2013
Q4 		$1.06M Sell
8,932
-3,724
-29% -$445K 0.09% 280
2013
Q3 		$1.46M Sell
12,656
-3,132
-20% -$361K 0.11% 277
2013
Q2 		$1.75M Buy
+15,788
New +$1.73M 0.15% 237

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

Rational Advisors's COST Position: Q2 2026 in Review

Rational Advisors reduced its Costco (COST) stake by 9.2% in Q2 2026, selling an estimated $255K and leaving 2,522 shares worth $2.36M. The position accounts for 0.22% of the portfolio, ranked #67.

Rational Advisors first reported a position in COST in Q2 2013 and has held it in 44 quarters since. The position peaked at $5.3M in Q1 2022. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Rational Advisors held 2,522 shares of Costco worth $2.36M as of Q2 2026.
  • Rational Advisors sold 256 Costco shares in Q2 2026, an estimated $255K.
  • Costco made up 0.22% of Rational Advisors's portfolio in Q2 2026, its #67 holding.
  • Rational Advisors first reported a position in Costco in Q2 2013 and has held it in 44 quarters since.
  • Rational Advisors's Costco position peaked at $5.3M in Q1 2022.
  • 2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Rational Advisors's 13F filing for Q2 2026, filed 24 Jul 2026.