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Matthew Hamilton Rosenberg’s Costco COST Stock Holding History

Matthew Hamilton Rosenberg’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 		$682K Buy
729
+14
+2% +$13.9K 0.13% 82
2026
Q1 		$712K Buy
715
+20
+3% +$19.5K 0.15% 66
2025
Q4 		$599K Buy
695
+1
+0.1% +$906 0.12% 80
2025
Q3 		$642K Buy
694
+8
+1% +$7.67K 0.14% 70
2025
Q2 		$679K Sell
686
-13
-2% -$12.9K 0.16% 62
2025
Q1 		$661K Buy
699
+25
+4% +$24.4K 0.17% 61
2024
Q4 		$618K Sell
674
-49
-7% -$45.5K 0.16% 63
2024
Q3 		$641K Buy
723
+21
+3% +$18.2K 0.17% 63
2024
Q2 		$594K Sell
702
-10
-1% -$7.8K 0.18% 62
2024
Q1 		$514K Sell
712
-6
-0.8% -$4.28K 0.15% 69
2023
Q4 		$474K Buy
718
+7
+1% +$4.15K 0.15% 70
2023
Q3 		$402K Hold
711
– – 0.13% 76
2023
Q2 		$383K Sell
711
-105
-13% -$53.1K 0.13% 85
2023
Q1 		$405K Hold
816
– – 0.13% 84
2022
Q4 		$373K Sell
816
-20
-2% -$9.77K 0.13% 99
2022
Q3 		$395K Buy
836
+43
+5% +$22.4K 0.15% 79
2022
Q2 		$385K Buy
793
+8
+1% +$4.06K 0.15% 87
2022
Q1 		$452K Buy
785
+49
+7% +$25.7K 0.16% 82
2021
Q4 		$418K Buy
736
+53
+8% +$27.1K 0.15% 86
2021
Q3 		$307K Buy
683
+177
+35% +$77.8K 0.12% 107
2021
Q2 		$200K Sell
506
-13
-3% -$4.92K 0.1% 131
2021
Q1 		$183K Sell
519
-62
-11% -$21.6K 0.1% 134
2020
Q4 		$219K Buy
581
+62
+12% +$23.2K 0.14% 97
2020
Q3 		$184K Hold
519
– – 0.14% 97
2020
Q2 		$157K Sell
519
-59
-10% -$17.9K 0.13% 107
2020
Q1 		$165K Buy
+578
New +$175K 0.16% 65

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

Matthew Hamilton Rosenberg's COST Position: Q2 2026 in Review

Matthew Hamilton Rosenberg increased its Costco (COST) stake by 2% in Q2 2026, buying an estimated $13.9K and bringing the position to 729 shares worth $682K. The position accounts for 0.13% of the portfolio, ranked #82.

Matthew Hamilton Rosenberg first reported a position in COST in Q1 2020 and has held it in 26 quarters since. The position peaked at $712K in Q1 2026. 1,979 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Matthew Hamilton Rosenberg held 729 shares of Costco worth $682K as of Q2 2026.
  • Matthew Hamilton Rosenberg bought 14 Costco shares in Q2 2026, an estimated $13.9K.
  • Costco made up 0.13% of Matthew Hamilton Rosenberg's portfolio in Q2 2026, its #82 holding.
  • Matthew Hamilton Rosenberg first reported a position in Costco in Q1 2020 and has held it in 26 quarters since.
  • Matthew Hamilton Rosenberg's Costco position peaked at $712K in Q1 2026.
  • 1,979 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Matthew Hamilton Rosenberg's 13F filing for Q2 2026, filed 17 Jul 2026.