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MAI Capital Management’s Costco COST Stock Holding History

MAI Capital 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
Q2 		– Hold
0
– – – 1924
2026
Q1 		– Hold
0
– -$86.2K – 5046
2025
Q4 		– Hold
0
– – – 1726
2022
Q4 		– Sell
-4,200
Closed -$1.98M – 1035
2022
Q3 		$1.98M Hold
4,200
– – 0.04% 258
2022
Q2 		$2.01M Sell
4,200
-4,800
-53% -$2.44M 0.04% 256
2022
Q1 		$5.18M Sell
9,000
-700
-7% -$367K 0.09% 166
2021
Q4 		$5.51M Sell
9,700
-300
-3% -$154K 0.09% 166
2021
Q3 		$4.49M Hold
10,000
– – 0.09% 151
2021
Q2 		$3.96M Buy
10,000
+9,600
+2,400% +$3.63M 0.08% 166
2021
Q1 		$141K Buy
+400
New +$139K ﹤0.01% 680

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

MAI Capital Management's COST Position: Q2 2026 in Review

MAI Capital Management increased its Costco (COST) stake by 7% in Q2 2026, buying an estimated $7.47M and bringing the position to 114,078 shares worth $107M. The position accounts for 0.4% of the portfolio, ranked #51.

MAI Capital Management first reported a position in COST in Q2 2013 and has held it in 53 quarters since. 4,242 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • MAI Capital Management held 114,078 shares of Costco worth $107M as of Q2 2026.
  • MAI Capital Management bought 7,500 Costco shares in Q2 2026, an estimated $7.47M.
  • Costco made up 0.4% of MAI Capital Management's portfolio in Q2 2026, its #51 holding.
  • MAI Capital Management first reported a position in Costco in Q2 2013 and has held it in 53 quarters since.
  • 4,242 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on MAI Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.