Winthrop Partners - WNY’s Costco COST Stock Holding History

Winthrop Partners - WNY’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	$747K	Hold	799	–	–	0.37%	54
2026 Q1	$796K	Hold	799	–	–	0.42%	49
2025 Q4	$689K	Buy	+799	New	+$724K	0.37%	55
2019 Q3	$339K	Hold	1,175	–	–	0.23%	82
2019 Q2	$311K	Hold	1,175	–	–	0.23%	84
2019 Q1	$287K	Buy	1,175 +53	+5%	+$11.6K	0.22%	85
2018 Q4	$229K	Hold	1,122	–	–	0.21%	89
2018 Q3	$264K	Hold	1,122	–	–	0.21%	94
2018 Q2	$234K	Hold	1,122	–	–	0.2%	98
2018 Q1	$207K	Hold	1,122	–	–	0.16%	116
2017 Q4	$212K	Buy	+1,122	New	+$194K	0.17%	118

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

New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return

TWC

TD Waterhouse Canada Toronto, Ontario, Canada $38B AUM 39.14% 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

Rathbones Group Liverpool, United Kingdom $27.1B AUM 20.2% 1-Year Est. Return

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

Winthrop Partners - WNY's COST Position: Q2 2026 in Review

Winthrop Partners - WNY held its Costco (COST) position steady in Q2 2026 at 799 shares worth $747K. The position accounts for 0.37% of the portfolio, ranked #54.

Winthrop Partners - WNY first reported a position in COST in Q4 2017 and has held it in 11 quarters since. The position peaked at $796K in Q1 2026. 1,572 funds tracked by Wall St. Rank hold COST as of Q2 2026.

Winthrop Partners - WNY held 799 shares of Costco worth $747K as of Q2 2026.
Winthrop Partners - WNY left its Costco share count unchanged in Q2 2026.
Costco made up 0.37% of Winthrop Partners - WNY's portfolio in Q2 2026, its #54 holding.
Winthrop Partners - WNY first reported a position in Costco in Q4 2017 and has held it in 11 quarters since.
Winthrop Partners - WNY's Costco position peaked at $796K in Q1 2026.
1,572 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Winthrop Partners - WNY's 13F filing for Q2 2026, filed 15 Jul 2026.