MCM
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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
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 $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

MAI Capital Management's COST Position: Q1 2026 in Review

MAI Capital Management increased its Costco (COST) stake by 0.75% in Q1 2026, buying an estimated $773K and bringing the position to 106,578 shares worth $106M. The position accounts for 0.6% of the portfolio, ranked #35.

MAI Capital Management first reported a position in COST in Q2 2013 and has held it in 52 quarters since. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • MAI Capital Management held 106,578 shares of Costco worth $106M as of Q1 2026.
  • MAI Capital Management bought 793 Costco shares in Q1 2026, an estimated $773K.
  • Costco made up 0.6% of MAI Capital Management's portfolio in Q1 2026, its #35 holding.
  • MAI Capital Management first reported a position in Costco in Q2 2013 and has held it in 52 quarters since.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on MAI Capital Management's 13F filing for Q1 2026, filed 15 May 2026.