Greenbrier Partners Capital Management’s Costco COST Stock Holding History

Greenbrier Partners Capital 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	$222M	Sell	222,472 -1,587	-0.7%	-$1.55M	17.07%	3
2025 Q4	$193M	Sell	224,059 -293	-0.1%	-$266K	12.96%	3
2025 Q3	$208M	Hold	224,352	–	–	14.06%	3
2025 Q2	$222M	Hold	224,352	–	–	16.27%	3
2025 Q1	$212M	Hold	224,352	–	–	16.61%	3
2024 Q4	$206M	Hold	224,352	–	–	14.9%	3
2024 Q3	$209M	Sell	224,352 -295	-0.1%	-$256K	15.82%	3
2024 Q2	$191M	Hold	224,647	–	–	15.75%	3
2024 Q1	$165M	Sell	224,647 -1,202	-0.5%	-$858K	15.19%	3
2023 Q4	$149M	Sell	225,849 -661	-0.3%	-$392K	15.05%	2
2023 Q3	$128M	Hold	226,510	–	–	14.45%	2
2023 Q2	$122M	Hold	226,510	–	–	13.34%	2
2023 Q1	$113M	Hold	226,510	–	–	13.85%	2
2022 Q4	$103M	Sell	226,510 -16,122	-7%	-$7.88M	14.91%	2
2022 Q3	$115M	Hold	242,632	–	–	14.65%	2
2022 Q2	$116M	Hold	242,632	–	–	14.29%	2
2022 Q1	$140M	Hold	242,632	–	–	13.19%	2
2021 Q4	$138M	Hold	242,632	–	–	11.86%	3
2021 Q3	$109M	Hold	242,632	–	–	9.98%	5
2021 Q2	$96M	Hold	242,632	–	–	8.75%	5
2021 Q1	$85.5M	Hold	242,632	–	–	8.73%	5
2020 Q4	$91.4M	Hold	242,632	–	–	9.67%	5
2020 Q3	$86.1M	Hold	242,632	–	–	10.22%	5
2020 Q2	$73.6M	Hold	242,632	–	–	10.11%	5
2020 Q1	$69.2M	Hold	242,632	–	–	12.44%	3
2019 Q4	$71.3M	Sell	242,632 -5,900	-2%	-$1.75M	10.91%	3
2019 Q3	$71.6M	Sell	248,532 -1,468	-0.6%	-$413K	11.77%	3
2019 Q2	$66.1M	Hold	250,000	–	–	11.07%	4
2019 Q1	$60.5M	Hold	250,000	–	–	10.76%	5
2018 Q4	$50.9M	Hold	250,000	–	–	10.48%	5
2018 Q3	$58.7M	Hold	250,000	–	–	9.87%	5
2018 Q2	$52.2M	Buy	250,000 +25,000	+11%	+$4.94M	9.35%	5
2018 Q1	$42.4M	Hold	225,000	–	–	8.03%	5
2017 Q4	$41.9M	Hold	225,000	–	–	7.53%	4
2017 Q3	$37M	Hold	225,000	–	–	7.45%	4
2017 Q2	$36M	Hold	225,000	–	–	7.58%	4
2017 Q1	$37.7M	Hold	225,000	–	–	8.39%	4
2016 Q4	$36M	Hold	225,000	–	–	9.08%	4
2016 Q3	$34.3M	Hold	225,000	–	–	8.76%	4
2016 Q2	$35.3M	Hold	225,000	–	–	9.71%	4
2016 Q1	$35.5M	Hold	225,000	–	–	9.42%	4
2015 Q4	$36.3M	Hold	225,000	–	–	8.76%	4
2015 Q3	$32.5M	Hold	225,000	–	–	8.68%	4
2015 Q2	$30.4M	Buy	225,000 +25,000	+13%	+$3.59M	7.5%	4
2015 Q1	$30.3M	Buy	200,000 +15,512	+8%	+$2.28M	6.88%	4
2014 Q4	$26.2M	Hold	184,488	–	–	6.34%	6
2014 Q3	$23.1M	Sell	184,488 -15,512	-8%	-$1.87M	5.95%	6
2014 Q2	$23M	Hold	200,000	–	–	5.78%	6
2014 Q1	$22.3M	Hold	200,000	–	–	5.9%	7
2013 Q4	$23.8M	Hold	200,000	–	–	6.41%	6
2013 Q3	$23M	Hold	200,000	–	–	7.06%	3
2013 Q2	$22.1M	Buy	+200,000	New	+$21.9M	7.98%	3

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 $147M AUM 25.76% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Greenbrier Partners Capital Management's COST Position: Q1 2026 in Review

Greenbrier Partners Capital Management reduced its Costco (COST) stake by 0.71% in Q1 2026, selling an estimated $1.55M and leaving 222,472 shares worth $222M. The position accounts for 17.07% of the portfolio, ranked #3.

Greenbrier Partners Capital Management first reported a position in COST in Q2 2013 and has held it in 52 quarters since. The position peaked at $222M in Q2 2025. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

Greenbrier Partners Capital Management held 222,472 shares of Costco worth $222M as of Q1 2026.
Greenbrier Partners Capital Management sold 1,587 Costco shares in Q1 2026, an estimated $1.55M.
Costco made up 17.07% of Greenbrier Partners Capital Management's portfolio in Q1 2026, its #3 holding.
Greenbrier Partners Capital Management first reported a position in Costco in Q2 2013 and has held it in 52 quarters since.
Greenbrier Partners Capital Management's Costco position peaked at $222M in Q2 2025.
4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

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