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Winthrop Advisory Group’s Costco COST Stock Holding History

Winthrop Advisory Group’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 		$1.26M Buy
1,342
+84
+7% +$83.7K 0.08% 78
2026
Q1 		$1.25M Sell
1,258
-84
-6% -$81.9K 0.1% 69
2025
Q4 		$1.16M Buy
1,342
+23
+2% +$20.8K 0.1% 68
2025
Q3 		$1.22M Buy
1,319
+96
+8% +$92K 0.11% 65
2025
Q2 		$1.21M Buy
1,223
+278
+29% +$276K 0.12% 61
2025
Q1 		$894K Sell
945
-183
-16% -$178K 0.11% 61
2024
Q4 		$1.03M Buy
1,128
+219
+24% +$203K 0.12% 57
2024
Q3 		$806K Buy
909
+45
+5% +$39.1K 0.1% 67
2024
Q2 		$735K Buy
864
+115
+15% +$89.7K 0.1% 62
2024
Q1 		$549K Buy
749
+34
+5% +$24.3K 0.08% 74
2023
Q4 		$472K Buy
715
+231
+48% +$137K 0.07% 79
2023
Q3 		$274K Sell
484
-27
-5% -$14.9K 0.04% 98
2023
Q2 		$275K Buy
+511
New +$259K 0.04% 107
2022
Q2 		– Sell
-506
Closed -$292K – 129
2022
Q1 		$292K Sell
506
-7
-1% -$3.67K 0.06% 102
2021
Q4 		$291K Buy
513
+35
+7% +$17.9K 0.06% 102
2021
Q3 		$215K Sell
478
-102
-18% -$44.8K 0.05% 128
2021
Q2 		$230K Sell
580
-143
-20% -$54.1K 0.05% 120
2021
Q1 		$255K Buy
723
+96
+15% +$33.4K 0.06% 108
2020
Q4 		$236K Buy
+627
New +$234K 0.06% 110

Other funds holding COST

Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $37.4B AUM 35.42% 1-Year Est. Return
EA
Emerald Advisors Bellevue, Washington $796M AUM 2.51% 1-Year Est. Return
New York State Common Retirement Fund
New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return
PTC
Provident Trust Company Waukesha, Wisconsin $4.77B AUM 29.31% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Commonwealth Equity Services
Commonwealth Equity Services Waltham, Massachusetts $79.5B AUM 27.1% 1-Year Est. Return

Winthrop Advisory Group's COST Position: Q2 2026 in Review

Winthrop Advisory Group increased its Costco (COST) stake by 6.7% in Q2 2026, buying an estimated $83.7K and bringing the position to 1,342 shares worth $1.26M. The position accounts for 0.08% of the portfolio, ranked #78.

Winthrop Advisory Group first reported a position in COST in Q4 2020 and has held it in 19 quarters since. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Winthrop Advisory Group held 1,342 shares of Costco worth $1.26M as of Q2 2026.
  • Winthrop Advisory Group bought 84 Costco shares in Q2 2026, an estimated $83.7K.
  • Costco made up 0.08% of Winthrop Advisory Group's portfolio in Q2 2026, its #78 holding.
  • Winthrop Advisory Group first reported a position in Costco in Q4 2020 and has held it in 19 quarters since.
  • 2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Winthrop Advisory Group's 13F filing for Q2 2026, filed 17 Jul 2026.