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Argentarii’s Costco COST Stock Holding History

Argentarii’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 		$5.37M Sell
5,389
-193
-3% -$188K 1.88% 10
2025
Q4 		$4.81M Buy
5,582
+524
+10% +$475K 1.57% 13
2025
Q3 		$4.68M Buy
5,058
+24
+0.5% +$23K 1.87% 9
2025
Q2 		$4.98M Buy
5,034
+30
+0.6% +$29.8K 2.29% 8
2025
Q1 		$4.73M Buy
5,004
+641
+15% +$625K 2.35% 7
2024
Q4 		$4M Buy
+4,363
New +$4.05M 2.01% 9

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

Argentarii's COST Position: Q1 2026 in Review

Argentarii reduced its Costco (COST) stake by 3.5% in Q1 2026, selling an estimated $188K and leaving 5,389 shares worth $5.37M. The position accounts for 1.88% of the portfolio, ranked #10.

Argentarii first reported a position in COST in Q4 2024 and has held it in 6 quarters since. 4,238 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Argentarii held 5,389 shares of Costco worth $5.37M as of Q1 2026.
  • Argentarii sold 193 Costco shares in Q1 2026, an estimated $188K.
  • Costco made up 1.88% of Argentarii's portfolio in Q1 2026, its #10 holding.
  • Argentarii first reported a position in Costco in Q4 2024 and has held it in 6 quarters since.
  • 4,238 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Argentarii's 13F filing for Q1 2026, filed 12 May 2026.