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Westerkirk Capital’s Costco COST Stock Holding History

Westerkirk Capital’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 		$5.86M Sell
5,882
-176
-3% -$172K 0.63% 37
2025
Q4 		$5.22M Buy
6,058
+1,080
+22% +$979K 0.51% 44
2025
Q3 		$4.61M Sell
4,978
-1,219
-20% -$1.17M 0.53% 40
2025
Q2 		$6.13M Buy
+6,197
New +$6.16M 0.76% 27

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 $147M AUM 25.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Westerkirk Capital's COST Position: Q1 2026 in Review

Westerkirk Capital reduced its Costco (COST) stake by 2.9% in Q1 2026, selling an estimated $172K and leaving 5,882 shares worth $5.86M. The position accounts for 0.63% of the portfolio, ranked #37.

Westerkirk Capital first reported a position in COST in Q2 2025 and has held it in 4 quarters since. The position peaked at $6.13M in Q2 2025. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Westerkirk Capital held 5,882 shares of Costco worth $5.86M as of Q1 2026.
  • Westerkirk Capital sold 176 Costco shares in Q1 2026, an estimated $172K.
  • Costco made up 0.63% of Westerkirk Capital's portfolio in Q1 2026, its #37 holding.
  • Westerkirk Capital first reported a position in Costco in Q2 2025 and has held it in 4 quarters since.
  • Westerkirk Capital's Costco position peaked at $6.13M in Q2 2025.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Westerkirk Capital's 13F filing for Q1 2026, filed 14 May 2026.