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Port Capital’s Costco COST Stock Holding History

Port 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 		$280K Sell
281
-95
-25% -$92.6K 0.01% 75
2025
Q4 		$324K Hold
376
– – 0.01% 73
2025
Q3 		$348K Sell
376
-12
-3% -$11.5K 0.01% 73
2025
Q2 		$384K Sell
388
-83
-18% -$82.5K 0.02% 71
2025
Q1 		$445K Sell
471
-56
-11% -$54.6K 0.02% 68
2024
Q4 		$483K Sell
527
-2
-0.4% -$1.86K 0.02% 69
2024
Q3 		$469K Sell
529
-59
-10% -$51.2K 0.02% 68
2024
Q2 		$500K Sell
588
-69
-11% -$53.8K 0.03% 64
2024
Q1 		$481K Buy
657
+209
+47% +$149K 0.02% 64
2023
Q4 		$296K Sell
448
-59
-12% -$35K 0.02% 78
2023
Q3 		$286K Sell
507
-30
-6% -$16.6K 0.02% 75
2023
Q2 		$289K Buy
+537
New +$272K 0.02% 74

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

Port Capital's COST Position: Q1 2026 in Review

Port Capital reduced its Costco (COST) stake by 25% in Q1 2026, selling an estimated $92.6K and leaving 281 shares worth $280K. The position accounts for 0.01% of the portfolio, ranked #75.

Port Capital first reported a position in COST in Q2 2023 and has held it in 12 quarters since. The position peaked at $500K in Q2 2024. 4,236 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Port Capital held 281 shares of Costco worth $280K as of Q1 2026.
  • Port Capital sold 95 Costco shares in Q1 2026, an estimated $92.6K.
  • Costco made up 0.01% of Port Capital's portfolio in Q1 2026, its #75 holding.
  • Port Capital first reported a position in Costco in Q2 2023 and has held it in 12 quarters since.
  • Port Capital's Costco position peaked at $500K in Q2 2024.
  • 4,236 funds tracked by Wall St. Rank held Costco as of Q1 2026.

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