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River Street Advisors’s Costco COST Stock Holding History

River Street Advisors’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 		$1.44M Buy
1,534
+58
+4% +$57.8K 0.42% 60
2026
Q1 		$1.47M Buy
1,476
+26
+2% +$25.3K 0.5% 50
2025
Q4 		$1.25M Buy
1,450
+23
+2% +$20.8K 0.47% 57
2025
Q3 		$1.32M Buy
1,427
+36
+3% +$34.5K 0.51% 55
2025
Q2 		$1.38M Buy
1,391
+1
+0.1% +$994 0.59% 44
2025
Q1 		$1.31M Sell
1,390
-732
-34% -$714K 0.65% 43
2024
Q4 		$1.94M Sell
2,122
-64
-3% -$59.4K 0.99% 28
2024
Q3 		$1.94M Buy
2,186
+101
+5% +$87.7K 1.05% 26
2024
Q2 		$1.77M Sell
2,085
-70
-3% -$54.6K 1.09% 23
2024
Q1 		$1.58M Buy
2,155
+122
+6% +$87.1K 1.07% 28
2023
Q4 		$1.34M Buy
2,033
+45
+2% +$26.7K 1.07% 28
2023
Q3 		$1.12M Buy
1,988
+31
+2% +$17.1K 1.06% 26
2023
Q2 		$1.05M Sell
1,957
-25
-1% -$12.7K 1% 30
2023
Q1 		$985K Buy
1,982
+17
+0.9% +$8.34K 0.97% 31
2022
Q4 		$897K Buy
+1,965
New +$960K 0.96% 35

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

River Street Advisors's COST Position: Q2 2026 in Review

River Street Advisors increased its Costco (COST) stake by 3.9% in Q2 2026, buying an estimated $57.8K and bringing the position to 1,534 shares worth $1.44M. The position accounts for 0.42% of the portfolio, ranked #60.

River Street Advisors first reported a position in COST in Q4 2022 and has held it in 15 quarters since. The position peaked at $1.94M in Q4 2024. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • River Street Advisors held 1,534 shares of Costco worth $1.44M as of Q2 2026.
  • River Street Advisors bought 58 Costco shares in Q2 2026, an estimated $57.8K.
  • Costco made up 0.42% of River Street Advisors's portfolio in Q2 2026, its #60 holding.
  • River Street Advisors first reported a position in Costco in Q4 2022 and has held it in 15 quarters since.
  • River Street Advisors's Costco position peaked at $1.94M in Q4 2024.
  • 2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on River Street Advisors's 13F filing for Q2 2026, filed 21 Jul 2026.