Barton Investment Management’s Costco COST Stock Holding History

Barton Investment 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 Q2	$958K	Hold	1,024	–	–	0.13%	33
2026 Q1	$1.02M	Hold	1,024	–	–	0.13%	31
2025 Q4	$883K	Hold	1,024	–	–	0.1%	34
2025 Q3	$948K	Hold	1,024	–	–	0.1%	34
2025 Q2	$1.01M	Hold	1,024	–	–	0.11%	32
2025 Q1	$968K	Hold	1,024	–	–	0.12%	31
2024 Q4	$938K	Hold	1,024	–	–	0.1%	32
2024 Q3	$908K	Hold	1,024	–	–	0.11%	32
2024 Q2	$870K	Hold	1,024	–	–	0.12%	31
2024 Q1	$750K	Hold	1,024	–	–	0.09%	34
2023 Q4	$676K	Hold	1,024	–	–	0.09%	34
2023 Q3	$579K	Hold	1,024	–	–	0.09%	33
2023 Q2	$551K	Hold	1,024	–	–	0.08%	34
2023 Q1	$509K	Hold	1,024	–	–	0.09%	34
2022 Q4	$467K	Hold	1,024	–	–	0.09%	35
2022 Q3	$484K	Hold	1,024	–	–	0.1%	33
2022 Q2	$491K	Hold	1,024	–	–	0.1%	33
2022 Q1	$590K	Hold	1,024	–	–	0.07%	34
2021 Q4	$581K	Buy	1,024 +274	+37%	+$140K	0.05%	33
2021 Q3	$337K	Hold	750	–	–	0.03%	39
2021 Q2	$296K	Hold	750	–	–	0.02%	40
2021 Q1	$264K	Hold	750	–	–	0.02%	39
2020 Q4	$283K	Buy	+750	New	+$280K	0.02%	39

Other funds holding COST

Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return

Ninety One (UK) London, United Kingdom $44.7B AUM 17.24% 1-Year Est. Return

Mirae Asset Global Investments Seoul, South Korea $67.7B AUM 51.91% 1-Year Est. Return

Sarasin & Partners London, United Kingdom $8.54B AUM 9.6% 1-Year Est. Return

CAM

Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return

CRM

Cardano Risk Management Rotterdam, Netherlands $13B AUM 49.44% 1-Year Est. Return

Steginsky Capital Port Washington, New York $666M AUM 34.57% 1-Year Est. Return

Barton Investment Management's COST Position: Q2 2026 in Review

Barton Investment Management held its Costco (COST) position steady in Q2 2026 at 1,024 shares worth $958K. The position accounts for 0.13% of the portfolio, ranked #33.

Barton Investment Management first reported a position in COST in Q4 2020 and has held it in 23 quarters since. The position peaked at $1.02M in Q1 2026. 1,079 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Barton Investment Management held 1,024 shares of Costco worth $958K as of Q2 2026.
Barton Investment Management left its Costco share count unchanged in Q2 2026.
Costco made up 0.13% of Barton Investment Management's portfolio in Q2 2026, its #33 holding.
Barton Investment Management first reported a position in Costco in Q4 2020 and has held it in 23 quarters since.
Barton Investment Management's Costco position peaked at $1.02M in Q1 2026.
1,079 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Barton Investment Management's 13F filing for Q2 2026, filed 20 Jul 2026.