WS Management’s Costco COST Stock Holding History

WS Management’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	$7.54M	Buy	7,568 +1,283	+20%	+$1.25M	0.67%	40
2025 Q4	$5.42M	Hold	6,285	–	–	0.44%	40
2025 Q3	$5.82M	Hold	6,285	–	–	0.63%	37
2025 Q2	$6.22M	Hold	6,285	–	–	0.86%	30
2025 Q1	$5.94M	Sell	6,285 -961	-13%	-$937K	0.66%	27
2024 Q4	$6.64M	Sell	7,246 -53,500	-88%	-$49.6M	0.62%	31
2024 Q3	$53.9M	Buy	60,746 +10,000	+20%	+$8.68M	3.77%	7
2024 Q2	$43.1M	Hold	50,746	–	–	3.18%	10
2024 Q1	$37.2M	Hold	50,746	–	–	2.34%	14
2023 Q4	$33.5M	Hold	50,746	–	–	1.99%	12
2023 Q3	$28.7M	Hold	50,746	–	–	2.31%	10
2023 Q2	$27.3M	Hold	50,746	–	–	2.29%	13
2023 Q1	$25.2M	Hold	50,746	–	–	2.67%	9
2022 Q4	$23.2M	Hold	50,746	–	–	1.99%	14
2022 Q3	$24M	Hold	50,746	–	–	2.17%	12
2022 Q2	$24.3M	Hold	50,746	–	–	1.97%	10
2022 Q1	$29.2M	Hold	50,746	–	–	1.43%	10
2021 Q4	$28.8M	Hold	50,746	–	–	2.29%	8
2021 Q3	$22.8M	Hold	50,746	–	–	2.41%	10
2021 Q2	$20.1M	Hold	50,746	–	–	1.98%	13
2021 Q1	$17.9M	Sell	50,746 -2,391	-4%	-$832K	1.85%	14
2020 Q4	$20M	Hold	53,137	–	–	2.08%	10
2020 Q3	$18.9M	Hold	53,137	–	–	2.03%	11
2020 Q2	$16.1M	Sell	53,137 -9,476	-15%	-$2.88M	1.98%	8
2020 Q1	$17.9M	Hold	62,613	–	–	1.95%	14
2019 Q4	$18.4M	Hold	62,613	–	–	1.58%	18
2019 Q3	$18M	Sell	62,613 -6,977	-10%	-$1.96M	1.41%	19
2019 Q2	$18.4M	Sell	69,590 -8,420	-11%	-$2.1M	1.19%	20
2019 Q1	$18.9M	Sell	78,010 -10,724	-12%	-$2.35M	1.14%	19
2018 Q4	$18.1M	Sell	88,734 -20,211	-19%	-$4.51M	0.88%	24
2018 Q3	$25.6M	Hold	108,945	–	–	0.84%	27
2018 Q2	$22.8M	Sell	108,945 -12,055	-10%	-$2.38M	0.64%	35
2018 Q1	$22.8M	Hold	121,000	–	–	0.6%	35
2017 Q4	$22.5M	Sell	121,000 -8,500	-7%	-$1.47M	0.66%	34
2017 Q3	$21.3M	Hold	129,500	–	–	0.53%	34
2017 Q2	$20.7M	Hold	129,500	–	–	0.77%	34
2017 Q1	$21.7M	Hold	129,500	–	–	0.86%	30
2016 Q4	$20.7M	Sell	129,500 -1,100	-0.8%	-$168K	0.84%	29
2016 Q3	$19.9M	Hold	130,600	–	–	0.76%	33
2016 Q2	$20.5M	Sell	130,600 -1,600	-1%	-$242K	0.71%	37
2016 Q1	$20.8M	Hold	132,200	–	–	0.81%	32
2015 Q4	$21.4M	Sell	132,200 -3,700	-3%	-$585K	0.74%	34
2015 Q3	$19.6M	Hold	135,900	–	–	0.78%	33
2015 Q2	$18.4M	Buy	135,900 +1,700	+1%	+$244K	0.64%	40
2015 Q1	$20.3M	Sell	134,200 -8,800	-6%	-$1.29M	0.68%	37
2014 Q4	$20.3M	Hold	143,000	–	–	0.63%	41
2014 Q3	$17.9M	Hold	143,000	–	–	0.58%	40
2014 Q2	$16.5M	Buy	143,000 +500	+0.4%	+$57.4K	0.5%	39
2014 Q1	$15.9M	Hold	142,500	–	–	0.5%	39
2013 Q4	$17M	Buy	142,500 +1,700	+1%	+$203K	0.56%	45
2013 Q3	$16.2M	Hold	140,800	–	–	0.56%	42
2013 Q2	$15.6M	Buy	+140,800	New	+$15.4M	0.5%	43

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

WS Management's COST Position: Q1 2026 in Review

WS Management increased its Costco (COST) stake by 20% in Q1 2026, buying an estimated $1.25M and bringing the position to 7,568 shares worth $7.54M. The position accounts for 0.67% of the portfolio, ranked #40.

WS Management first reported a position in COST in Q2 2013 and has held it in 52 quarters since. The position peaked at $53.9M in Q3 2024. 4,237 funds tracked by Wall St. Rank hold COST as of Q1 2026.

WS Management held 7,568 shares of Costco worth $7.54M as of Q1 2026.
WS Management bought 1,283 Costco shares in Q1 2026, an estimated $1.25M.
Costco made up 0.67% of WS Management's portfolio in Q1 2026, its #40 holding.
WS Management first reported a position in Costco in Q2 2013 and has held it in 52 quarters since.
WS Management's Costco position peaked at $53.9M in Q3 2024.
4,237 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on WS Management's 13F filing for Q1 2026, filed 15 May 2026.