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Marietta Investment Partners’s Costco COST Stock Holding History

Marietta Investment Partners’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 		$650K Buy
652
+90
+16% +$87.7K 0.13% 107
2025
Q4 		$485K Sell
562
-1,150
-67% -$1.04M 0.1% 121
2025
Q3 		$1.58M Buy
1,712
+205
+14% +$196K 0.31% 74
2025
Q2 		$1.49M Buy
1,507
+918
+156% +$912K 0.33% 69
2025
Q1 		$557K Buy
+589
New +$574K 0.13% 113
2020
Q4 		– Sell
-763
Closed -$271K – 155
2020
Q3 		$271K Buy
+763
New +$256K 0.08% 125

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

Marietta Investment Partners's COST Position: Q1 2026 in Review

Marietta Investment Partners increased its Costco (COST) stake by 16% in Q1 2026, buying an estimated $87.7K and bringing the position to 652 shares worth $650K. The position accounts for 0.13% of the portfolio, ranked #107.

Marietta Investment Partners first reported a position in COST in Q3 2020 and has held it in 6 quarters since. The position peaked at $1.58M in Q3 2025. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Marietta Investment Partners held 652 shares of Costco worth $650K as of Q1 2026.
  • Marietta Investment Partners bought 90 Costco shares in Q1 2026, an estimated $87.7K.
  • Costco made up 0.13% of Marietta Investment Partners's portfolio in Q1 2026, its #107 holding.
  • Marietta Investment Partners first reported a position in Costco in Q3 2020 and has held it in 6 quarters since.
  • Marietta Investment Partners's Costco position peaked at $1.58M in Q3 2025.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Marietta Investment Partners's 13F filing for Q1 2026, filed 28 Apr 2026.