Argentarii
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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
Q3 		$4.82M Sell
5,292
-9
-0.2% -$8.4K 1.47% 15
2026
Q2 		$5.01M Sell
5,301
-88
-2% -$87.7K 1.51% 13
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

Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $174B AUM 33.96% 1-Year Est. Return
Everett Harris & Co
Everett Harris & Co Los Angeles, California $8.46B AUM 13.48% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
Emerald Advisors
Emerald Advisors Bellevue, Washington $781M AUM 4.78% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $33.8B AUM 31.08% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return
ProShare Advisors
ProShare Advisors Bethesda, Maryland $69.5B AUM 31.38% 1-Year Est. Return
Bank Julius Baer & Co
Bank Julius Baer & Co Zurich, Switzerland $39.3B AUM 31.81% 1-Year Est. Return
Provident Trust Company
Provident Trust Company Waukesha, Wisconsin $3.22B AUM 13.63% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return

Argentarii's COST Position: Q3 2026 in Review

Argentarii reduced its Costco (COST) stake by 0.17% in Q3 2026, selling an estimated $8.4K and leaving 5,292 shares worth $4.82M. The position accounts for 1.47% of the portfolio, ranked #15.

Argentarii first reported a position in COST in Q4 2024 and has held it in 8 quarters since. The position peaked at $5.37M in Q1 2026. 1,846 funds tracked by Wall St. Rank hold COST as of Q3 2026.

  • Argentarii held 5,292 shares of Costco worth $4.82M as of Q3 2026.
  • Argentarii sold 9 Costco shares in Q3 2026, an estimated $8.4K.
  • Costco made up 1.47% of Argentarii's portfolio in Q3 2026, its #15 holding.
  • Argentarii first reported a position in Costco in Q4 2024 and has held it in 8 quarters since.
  • Argentarii's Costco position peaked at $5.37M in Q1 2026.
  • 1,846 funds tracked by Wall St. Rank held Costco as of Q3 2026.

Based on Argentarii's 13F filing for Q3 2026, filed 28 Oct 2026.