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	$71.4M	Sell	71,700 -71,700	-50%	-$69.9M	0.05%	162
2025 Q4	$124M	Sell	143,400 -54,300	-27%	-$49.2M	0.07%	124
2025 Q3	$176M	Sell	197,700 -42,600	-18%	-$40.8M	0.09%	104
2025 Q2	$222M	Sell	240,300 -82,400	-26%	-$81.9M	0.13%	80
2025 Q1	$305M	Sell	322,700 -143,100	-31%	-$140M	0.2%	51
2024 Q4	$427M	Sell	465,800 -7,100	-2%	-$6.59M	0.24%	48
2024 Q3	$419M	Sell	472,900 -80,900	-15%	-$70.2M	0.25%	40
2024 Q2	$433M	Sell	553,800 -188,500	-25%	-$147M	0.27%	37
2024 Q1	$544M	Buy	742,300 +77,200	+12%	+$55.1M	0.31%	39
2023 Q4	$439M	Buy	665,100 +314,400	+90%	+$186M	0.28%	37
2023 Q3	$198M	Buy	350,700 +13,200	+4%	+$7.29M	0.16%	54
2023 Q2	$182M	Sell	337,500 -39,600	-11%	-$20M	0.15%	56
2023 Q1	$187M	Buy	377,100 +89,200	+31%	+$43.7M	0.16%	60
2022 Q4	$131M	Sell	287,900 -16,700	-5%	-$8.16M	0.14%	101
2022 Q3	$144M	Buy	304,600 +86,400	+40%	+$44.9M	0.16%	65
2022 Q2	$105M	Sell	218,200 -263,700	-55%	-$134M	0.11%	112
2022 Q1	$278M	Buy	481,900 +198,600	+70%	+$104M	0.25%	44
2021 Q4	$161M	Buy	283,300 +3,200	+1%	+$1.64M	0.16%	89
2021 Q3	$111M	Buy	280,100 +13,700	+5%	+$6.02M	0.1%	130
2021 Q2	$105M	Buy	+266,400	New	+$101M	0.1%	132
2021 Q1	–	Sell	-3,060	Closed	-$115M	–	8972
2020 Q4	$115M	Sell	3,060 -516	-14%	-$193K	0.15%	81
2020 Q3	$127M	Sell	3,576 -1,862	-34%	-$626K	0.17%	68
2020 Q2	$165M	Buy	5,438 +2,225	+69%	+$677K	0.26%	40
2020 Q1	$91.6M	Buy	3,213 +1,204	+60%	+$365K	0.16%	56
2019 Q4	$59M	Sell	2,009 -1,075	-35%	-$319K	0.13%	90
2019 Q3	$88.9M	Buy	3,084 +907	+42%	+$255K	0.25%	49
2019 Q2	$57.5M	Buy	2,177 +233	+12%	+$58.1K	0.16%	69
2019 Q1	$47.1M	Sell	1,944 -795	-29%	-$174K	0.13%	97
2018 Q4	$55.8M	Buy	2,739 +632	+30%	+$141K	0.16%	74
2018 Q3	$49.5M	Sell	2,107 -55	-3%	-$12.4K	0.16%	82
2018 Q2	$45.2M	Sell	2,162 -434	-17%	-$85.7K	0.18%	79
2018 Q1	$501K	Sell	2,596 -1,127	-30%	-$213K	0.02%	715
2017 Q4	$458K	Sell	3,723 -784	-17%	-$135K	0.02%	752
2017 Q3	$1.01M	Sell	4,507 -504	-10%	-$79.2K	0.04%	372
2017 Q2	$2.06M	Buy	5,011 +2,395	+92%	+$413K	0.09%	172
2017 Q1	$403K	Buy	2,616 +532	+26%	+$89.2K	0.02%	796
2016 Q4	$571K	Sell	2,084 -3,528	-63%	-$539K	0.03%	482
2016 Q3	$519K	Buy	5,612 +3,906	+229%	+$631K	0.04%	482
2016 Q2	$373K	Buy	1,706 +166	+11%	+$25.1K	0.02%	666
2016 Q1	$189K	Buy	1,540 +660	+75%	+$100K	0.02%	905
2015 Q4	$187K	Buy	880 +149	+20%	+$23.5K	0.01%	920
2015 Q3	$137K	Buy	731 +62	+9%	+$8.85K	0.01%	1165
2015 Q2	$229K	Buy	669 +157	+31%	+$22.6K	0.02%	734
2015 Q1	$57K	Buy	512 +269	+111%	+$39.5K	0.01%	1456
2014 Q4	$48K	Buy	+243	New	+$33K	0.01%	1411

Other funds holding COST

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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 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.