Jane Street’s Costco COST Stock Holding History

Jane Street’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	$868M	Sell	871,000 -278,500	-24%	-$271M	0.11%	115
2025 Q4	$991M	Buy	1,149,500 +191,700	+20%	+$174M	0.15%	89
2025 Q3	$887M	Buy	957,800 +478,100	+100%	+$458M	0.13%	91
2025 Q2	$475M	Buy	479,700 +43,300	+10%	+$43M	0.09%	141
2025 Q1	$413M	Sell	436,400 -59,000	-12%	-$57.5M	0.1%	114
2024 Q4	$454M	Sell	495,400 -194,900	-28%	-$181M	0.1%	111
2024 Q3	$612M	Buy	690,300 +339,400	+97%	+$295M	0.14%	81
2024 Q2	$298M	Sell	350,900 -348,100	-50%	-$272M	0.07%	149
2024 Q1	$512M	Buy	699,000 +227,300	+48%	+$162M	0.11%	100
2023 Q4	$311M	Sell	471,700 -29,800	-6%	-$17.7M	0.08%	133
2023 Q3	$283M	Buy	501,500 +134,900	+37%	+$74.5M	0.09%	105
2023 Q2	$197M	Buy	366,600 +53,400	+17%	+$27M	0.07%	165
2023 Q1	$156M	Sell	313,200 -323,300	-51%	-$159M	0.06%	185
2022 Q4	$291M	Sell	636,500 -113,900	-15%	-$55.7M	0.13%	90
2022 Q3	$354M	Buy	750,400 +101,300	+16%	+$52.7M	0.16%	66
2022 Q2	$311M	Sell	649,100 -47,900	-7%	-$24.3M	0.13%	79
2022 Q1	$401M	Sell	697,000 -254,900	-27%	-$134M	0.13%	79
2021 Q4	$540M	Buy	951,900 +331,900	+54%	+$170M	0.18%	55
2021 Q3	$279M	Buy	620,000 +78,400	+14%	+$34.5M	0.1%	110
2021 Q2	$214M	Sell	541,600 -27,900	-5%	-$10.6M	0.08%	156
2021 Q1	$201M	Sell	569,500 -12,000	-2%	-$4.18M	0.1%	134
2020 Q4	$219M	Sell	581,500 -466,900	-45%	-$174M	0.11%	117
2020 Q3	$372M	Buy	1,048,400 +463,600	+79%	+$156M	0.22%	60
2020 Q2	$177M	Sell	584,800 -56,400	-9%	-$17.2M	0.13%	104
2020 Q1	$183M	Buy	641,200 +189,900	+42%	+$57.6M	0.18%	75
2019 Q4	$133M	Buy	451,300 +35,700	+9%	+$10.6M	0.19%	74
2019 Q3	$120M	Buy	415,600 +243,400	+141%	+$68.5M	0.2%	80
2019 Q2	$45.5M	Sell	172,200 -124,800	-42%	-$31.1M	0.08%	184
2019 Q1	$71.9M	Sell	297,000 -120,200	-29%	-$26.3M	0.12%	126
2018 Q4	$85M	Buy	417,200 +212,100	+103%	+$47.4M	0.18%	88
2018 Q3	$48.2M	Sell	205,100 -255,600	-55%	-$57.6M	0.1%	134
2018 Q2	$96.3M	Buy	460,700 +364,500	+379%	+$72M	0.23%	56
2018 Q1	$18.1M	Sell	96,200 -390,500	-80%	-$73.7M	0.05%	326
2017 Q4	$90.6M	Buy	486,700 +340,700	+233%	+$58.8M	0.26%	65
2017 Q3	$24M	Sell	146,000 -922,800	-86%	-$145M	0.08%	228
2017 Q2	$171M	Buy	1,068,800 +523,400	+96%	+$90.2M	0.6%	28
2017 Q1	$91.5M	Buy	545,400 +472,600	+649%	+$79.2M	0.41%	39
2016 Q4	$11.7M	Buy	72,800 +23,200	+47%	+$3.54M	0.05%	303
2016 Q3	$7.56M	Sell	49,600 -6,600	-12%	-$1.07M	0.04%	404
2016 Q2	$8.83M	Buy	56,200 +6,300	+13%	+$954K	0.04%	377
2016 Q1	$7.86M	Sell	49,900 -7,700	-13%	-$1.17M	0.04%	385
2015 Q4	$9.3M	Sell	57,600 -49,100	-46%	-$7.76M	0.06%	291
2015 Q3	$15.4M	Buy	106,700 +80,800	+312%	+$11.5M	0.1%	177
2015 Q2	$3.5M	Sell	25,900 -1,100	-4%	-$158K	0.02%	654
2015 Q1	$4.09M	Buy	27,000 +21,300	+374%	+$3.13M	0.03%	494
2014 Q4	$808K	Buy	+5,700	New	+$775K	0.01%	1170

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

Jane Street's COST Position: Q1 2026 in Review

Jane Street reduced its Costco (COST) stake by 70% in Q1 2026, selling an estimated $71.1M and leaving 30,668 shares worth $30.6M. The position accounts for ﹤0.01% of the portfolio, ranked #1423.

Jane Street first reported a position in COST in Q2 2013 and has held it in 49 quarters since. The position peaked at $389M in Q3 2025. 4,237 funds tracked by Wall St. Rank hold COST as of Q1 2026.

Jane Street held 30,668 shares of Costco worth $30.6M as of Q1 2026.
Jane Street sold 72,983 Costco shares in Q1 2026, an estimated $71.1M.
Costco made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #1423 holding.
Jane Street first reported a position in Costco in Q2 2013 and has held it in 49 quarters since.
Jane Street's Costco position peaked at $389M in Q3 2025.
4,237 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.