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Rockingstone Advisors’s Costco COST Stock Holding History

Rockingstone 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 		$2.33M Buy
2,495
+54
+2% +$53.8K 0.94% 44
2026
Q1 		$2.43M Buy
2,441
+5
+0.2% +$4.87K 1.12% 41
2025
Q4 		$2.1M Buy
2,436
+161
+7% +$146K 0.96% 41
2025
Q3 		$2.11M Buy
2,275
+6
+0.3% +$5.75K 1.04% 40
2025
Q2 		$2.25M Sell
2,269
-999
-31% -$993K 1.18% 35
2025
Q1 		$3.09M Buy
3,268
+46
+1% +$44.8K 1.39% 29
2024
Q4 		$2.95M Sell
3,222
-192
-6% -$178K 1.3% 27
2024
Q3 		$3.03M Buy
3,414
+90
+3% +$78.1K 1.49% 24
2024
Q2 		$2.83M Hold
3,324
– – 1.45% 27
2024
Q1 		$2.44M Sell
3,324
-66
-2% -$47.1K 1.26% 29
2023
Q4 		$2.24M Sell
3,390
-323
-9% -$191K 1.25% 28
2023
Q3 		$2.1M Buy
3,713
+10
+0.3% +$5.52K 1.16% 30
2023
Q2 		$1.99M Buy
3,703
+3
+0.1% +$1.52K 1.13% 31
2023
Q1 		$1.84M Buy
3,700
+49
+1% +$24K 1.12% 36
2022
Q4 		$1.67M Buy
+3,651
New +$1.78M 1.24% 34

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

Rockingstone Advisors's COST Position: Q2 2026 in Review

Rockingstone Advisors increased its Costco (COST) stake by 2.2% in Q2 2026, buying an estimated $53.8K and bringing the position to 2,495 shares worth $2.33M. The position accounts for 0.94% of the portfolio, ranked #44.

Rockingstone Advisors first reported a position in COST in Q4 2022 and has held it in 15 quarters since. The position peaked at $3.09M in Q1 2025. 2,087 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Rockingstone Advisors held 2,495 shares of Costco worth $2.33M as of Q2 2026.
  • Rockingstone Advisors bought 54 Costco shares in Q2 2026, an estimated $53.8K.
  • Costco made up 0.94% of Rockingstone Advisors's portfolio in Q2 2026, its #44 holding.
  • Rockingstone Advisors first reported a position in Costco in Q4 2022 and has held it in 15 quarters since.
  • Rockingstone Advisors's Costco position peaked at $3.09M in Q1 2025.
  • 2,087 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Rockingstone Advisors's 13F filing for Q2 2026, filed 14 Jul 2026.