ECAM
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East Coast Asset Management’s Costco COST Stock Holding History

East Coast 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 		$241K Hold
242
– – 0.08% 58
2025
Q4 		$209K Hold
242
– – 0.06% 68
2025
Q3 		$224K Hold
242
– – 0.07% 67
2025
Q2 		$240K Hold
242
– – 0.08% 64
2025
Q1 		$229K Hold
242
– – 0.08% 66
2024
Q4 		$222K Hold
242
– – 0.07% 67
2024
Q3 		$215K Hold
242
– – 0.07% 71
2024
Q2 		$206K Sell
242
-58
-19% -$45.3K 0.07% 70
2024
Q1 		$220K Buy
+300
New +$214K 0.08% 67

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

East Coast Asset Management's COST Position: Q1 2026 in Review

East Coast Asset Management held its Costco (COST) position steady in Q1 2026 at 242 shares worth $241K. The position accounts for 0.08% of the portfolio, ranked #58.

East Coast Asset Management first reported a position in COST in Q1 2024 and has held it in 9 quarters since. 4,238 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • East Coast Asset Management held 242 shares of Costco worth $241K as of Q1 2026.
  • East Coast Asset Management left its Costco share count unchanged in Q1 2026.
  • Costco made up 0.08% of East Coast Asset Management's portfolio in Q1 2026, its #58 holding.
  • East Coast Asset Management first reported a position in Costco in Q1 2024 and has held it in 9 quarters since.
  • 4,238 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on East Coast Asset Management's 13F filing for Q1 2026, filed 15 May 2026.