George Kaiser Family Foundation’s Costco COST Stock Holding History

George Kaiser Family Foundation’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 Q2	$740K	Buy	791 +371	+88%	+$370K	0.07%	42
2026 Q1	$419K	Hold	420	–	–	0.05%	43
2025 Q4	$362K	Hold	420	–	–	0.05%	61
2025 Q3	$389K	Hold	420	–	–	0.05%	59
2025 Q2	$416K	Buy	420 +129	+44%	+$128K	0.06%	54
2025 Q1	$275K	Buy	+291	New	+$284K	0.04%	43
2022 Q2	–	Sell	-632	Closed	-$364K	–	48
2022 Q1	$364K	Hold	632	–	–	0.06%	45
2021 Q4	$359K	Hold	632	–	–	0.05%	42
2021 Q3	$284K	Hold	632	–	–	0.05%	45
2021 Q2	$250K	Hold	632	–	–	0.04%	47
2021 Q1	$223K	Hold	632	–	–	0.05%	43
2020 Q4	$238K	Hold	632	–	–	0.06%	42
2020 Q3	$224K	Buy	+632	New	+$212K	0.08%	43
2020 Q1	–	Sell	-4,434	Closed	-$1.3M	–	27
2019 Q4	$1.3M	Hold	4,434	–	–	0.4%	19
2019 Q3	$1.28M	Hold	4,434	–	–	0.45%	19
2019 Q2	$1.17M	Hold	4,434	–	–	0.41%	19
2019 Q1	$1.07M	Hold	4,434	–	–	0.37%	19
2018 Q4	$903K	Hold	4,434	–	–	0.31%	19
2018 Q3	$1.04M	Hold	4,434	–	–	0.33%	16
2018 Q2	$927K	Hold	4,434	–	–	0.3%	15
2018 Q1	$835K	Hold	4,434	–	–	0.26%	16
2017 Q4	$825K	Hold	4,434	–	–	0.27%	16
2017 Q3	$728K	Hold	4,434	–	–	0.33%	17
2017 Q2	$709K	Buy	+4,434	New	+$764K	0.33%	15

Other funds holding COST

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

George Kaiser Family Foundation's COST Position: Q2 2026 in Review

George Kaiser Family Foundation increased its Costco (COST) stake by 88% in Q2 2026, buying an estimated $370K and bringing the position to 791 shares worth $740K. The position accounts for 0.07% of the portfolio, ranked #42.

George Kaiser Family Foundation first reported a position in COST in Q2 2017 and has held it in 24 quarters since. The position peaked at $1.3M in Q4 2019. 4,251 funds tracked by Wall St. Rank hold COST as of Q2 2026.

George Kaiser Family Foundation held 791 shares of Costco worth $740K as of Q2 2026.
George Kaiser Family Foundation bought 371 Costco shares in Q2 2026, an estimated $370K.
Costco made up 0.07% of George Kaiser Family Foundation's portfolio in Q2 2026, its #42 holding.
George Kaiser Family Foundation first reported a position in Costco in Q2 2017 and has held it in 24 quarters since.
George Kaiser Family Foundation's Costco position peaked at $1.3M in Q4 2019.
4,251 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on George Kaiser Family Foundation's 13F filing for Q2 2026, filed 12 Aug 2026.