MAM
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Madison Asset Management’s Costco COST Stock Holding History

Madison Asset Management’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
Q1 		$32.9M Buy
33,040
+5,459
+20% +$5.32M 0.41% 77
2025
Q4 		$23.8M Buy
27,581
+486
+2% +$440K 0.27% 90
2025
Q3 		$25.1M Sell
27,095
-837
-3% -$802K 0.28% 83
2025
Q2 		$27.7M Sell
27,932
-3,023
-10% -$3M 0.3% 79
2025
Q1 		$29.3M Sell
30,955
-2,588
-8% -$2.52M 0.33% 79
2024
Q4 		$30.7M Sell
33,543
-1,915
-5% -$1.78M 0.35% 78
2024
Q3 		$31.4M Sell
35,458
-1,613
-4% -$1.4M 0.35% 81
2024
Q2 		$31.5M Sell
37,071
-2,633
-7% -$2.05M 0.39% 74
2024
Q1 		$29.1M Sell
39,704
-7,612
-16% -$5.43M 0.36% 76
2023
Q4 		$31.2M Sell
47,316
-860
-2% -$510K 0.42% 73
2023
Q3 		$27.2M Sell
48,176
-1,175
-2% -$649K 0.4% 82
2023
Q2 		$26.6M Sell
49,351
-1,041
-2% -$527K 0.39% 84
2023
Q1 		$25M Sell
50,392
-283
-0.6% -$139K 0.38% 86
2022
Q4 		$23.1M Buy
50,675
+244
+0.5% +$119K 0.36% 96
2022
Q3 		$23.8M Buy
50,431
+639
+1% +$332K 0.4% 90
2022
Q2 		$23.9M Buy
49,792
+17,147
+53% +$8.7M 0.37% 91
2022
Q1 		$18.8M Buy
32,645
+1,657
+5% +$870K 0.27% 104
2021
Q4 		$17.6M Buy
30,988
+179
+0.6% +$91.7K 0.23% 109
2021
Q3 		$13.8M Buy
30,809
+961
+3% +$422K 0.19% 115
2021
Q2 		$11.8M Buy
29,848
+1,899
+7% +$718K 0.16% 125
2021
Q1 		$9.85M Buy
27,949
+1,311
+5% +$456K 0.14% 131
2020
Q4 		$10M Buy
26,638
+1,501
+6% +$561K 0.15% 121
2020
Q3 		$8.92M Sell
25,137
-548
-2% -$184K 0.15% 118
2020
Q2 		$7.79M Buy
25,685
+163
+0.6% +$49.6K 0.14% 122
2020
Q1 		$7.28M Buy
25,522
+133
+0.5% +$40.4K 0.15% 119
2019
Q4 		$7.46M Buy
+25,389
New +$7.55M 0.11% 144

Other funds holding COST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
DAM
Diamant Asset Management Ridgefield, Connecticut $137B AUM 18.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Madison Asset Management's COST Position: Q1 2026 in Review

Madison Asset Management increased its Costco (COST) stake by 20% in Q1 2026, buying an estimated $5.32M and bringing the position to 33,040 shares worth $32.9M. The position accounts for 0.41% of the portfolio, ranked #77.

Madison Asset Management first reported a position in COST in Q4 2019 and has held it in 26 quarters since. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Madison Asset Management held 33,040 shares of Costco worth $32.9M as of Q1 2026.
  • Madison Asset Management bought 5,459 Costco shares in Q1 2026, an estimated $5.32M.
  • Costco made up 0.41% of Madison Asset Management's portfolio in Q1 2026, its #77 holding.
  • Madison Asset Management first reported a position in Costco in Q4 2019 and has held it in 26 quarters since.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Madison Asset Management's 13F filing for Q1 2026, filed 7 May 2026.