Simplex Trading
COST icon

Simplex Trading’s Costco COST Stock Holding History

Simplex Trading’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 		$140M Sell
140,800
-194,900
-58% -$190M 0.09% 84
2025
Q4 		$289M Buy
335,700
+61,000
+22% +$55.3M 0.16% 57
2025
Q3 		$254M Buy
274,700
+59,100
+27% +$56.6M 0.13% 72
2025
Q2 		$213M Sell
215,600
-53,500
-20% -$53.2M 0.12% 84
2025
Q1 		$255M Sell
269,100
-210,300
-44% -$205M 0.16% 57
2024
Q4 		$439M Buy
479,400
+114,600
+31% +$106M 0.25% 45
2024
Q3 		$323M Sell
364,800
-13,000
-3% -$11.3M 0.19% 51
2024
Q2 		$321M Sell
377,800
-243,900
-39% -$190M 0.2% 49
2024
Q1 		$455M Buy
621,700
+152,200
+32% +$109M 0.26% 43
2023
Q4 		$310M Buy
469,500
+209,900
+81% +$124M 0.2% 49
2023
Q3 		$147M Buy
259,600
+21,000
+9% +$11.6M 0.12% 80
2023
Q2 		$128M Sell
238,600
-167,800
-41% -$84.9M 0.11% 100
2023
Q1 		$202M Sell
406,400
-9,900
-2% -$4.86M 0.18% 55
2022
Q4 		$190M Buy
416,300
+77,600
+23% +$37.9M 0.21% 52
2022
Q3 		$160M Buy
338,700
+92,000
+37% +$47.9M 0.18% 54
2022
Q2 		$118M Sell
246,700
-5,200
-2% -$2.64M 0.13% 90
2022
Q1 		$145M Sell
251,900
-119,700
-32% -$62.8M 0.13% 103
2021
Q4 		$211M Buy
371,600
+14,400
+4% +$7.38M 0.21% 65
2021
Q3 		$141M Buy
357,200
+22,500
+7% +$9.89M 0.13% 95
2021
Q2 		$132M Buy
+334,700
New +$127M 0.13% 97
2021
Q1 		– Sell
-2,696
Closed -$102M – 8970
2020
Q4 		$102M Sell
2,696
-1,651
-38% -$617K 0.13% 86
2020
Q3 		$154M Sell
4,347
-843
-16% -$283K 0.21% 56
2020
Q2 		$157M Buy
5,190
+2,733
+111% +$832K 0.25% 42
2020
Q1 		$70.1M Buy
2,457
+240
+11% +$72.8K 0.12% 80
2019
Q4 		$65.2M Sell
2,217
-296
-12% -$88K 0.14% 80
2019
Q3 		$72.4M Buy
2,513
+609
+32% +$171K 0.21% 62
2019
Q2 		$50.3M Sell
1,904
-202
-10% -$50.3K 0.14% 82
2019
Q1 		$51M Buy
2,106
+162
+8% +$35.4K 0.14% 91
2018
Q4 		$39.6M Buy
1,944
+775
+66% +$173K 0.12% 100
2018
Q3 		$27.5M Sell
1,169
-799
-41% -$180K 0.09% 157
2018
Q2 		$41.1M Buy
1,968
+250
+15% +$49.4K 0.16% 92
2018
Q1 		$1.62M Sell
1,718
-771
-31% -$145K 0.07% 235
2017
Q4 		$1.68M Sell
2,489
-291
-10% -$50.2K 0.07% 225
2017
Q3 		$1.29M Sell
2,780
-810
-23% -$127K 0.05% 298
2017
Q2 		$695K Buy
3,590
+2,287
+176% +$394K 0.03% 505
2017
Q1 		$379K Buy
1,303
+723
+125% +$121K 0.02% 838
2016
Q4 		$487K Sell
580
-803
-58% -$123K 0.03% 558
2016
Q3 		$281K Buy
1,383
+257
+23% +$41.5K 0.02% 815
2016
Q2 		$291K Buy
1,126
+551
+96% +$83.4K 0.02% 789
2016
Q1 		$304K Buy
575
+50
+10% +$7.58K 0.02% 650
2015
Q4 		$392K Sell
525
-502
-49% -$79.3K 0.03% 526
2015
Q3 		$254K Buy
1,027
+143
+16% +$20.4K 0.02% 781
2015
Q2 		$277K Buy
884
+333
+60% +$47.9K 0.02% 634
2015
Q1 		$484K Buy
551
+294
+114% +$43.1K 0.06% 336
2014
Q4 		$229K Buy
+257
New +$34.9K 0.03% 545

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

Simplex Trading's COST Position: Q1 2026 in Review

Simplex Trading sold out of Costco (COST) in Q1 2026, closing a stake of 3,949 shares — an estimated $3.85M sold.

Simplex Trading first reported a position in COST in Q4 2014 and held it in 22 quarters. The position peaked at $14.1M in Q1 2022. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Simplex Trading reported no remaining Costco position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 3,949 Costco shares in Q1 2026, an estimated $3.85M.
  • Simplex Trading first reported a position in Costco in Q4 2014 and held it in 22 quarters.
  • Simplex Trading's Costco position peaked at $14.1M in Q1 2022.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.