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Tidemark’s Costco COST Stock Holding History

Tidemark’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
Q2 		$734K Buy
785
+39
+5% +$38.9K 0.17% 72
2026
Q1 		$743K Buy
746
+57
+8% +$55.5K 0.19% 64
2025
Q4 		$594K Sell
689
-23
-3% -$20.8K 0.17% 63
2025
Q3 		$659K Buy
712
+41
+6% +$39.3K 0.19% 63
2025
Q2 		$665K Buy
671
+293
+78% +$291K 0.21% 57
2025
Q1 		$358K Buy
378
+7
+2% +$6.83K 0.13% 81
2024
Q4 		$340K Buy
371
+54
+17% +$50.1K 0.13% 79
2024
Q3 		$281K Buy
317
+6
+2% +$5.21K 0.12% 90
2024
Q2 		$265K Buy
311
+20
+7% +$15.6K 0.12% 92
2024
Q1 		$213K Buy
291
+48
+20% +$34.3K 0.12% 117
2023
Q4 		$161K Buy
+243
New +$144K 0.1% 126

Other funds holding COST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Tidemark's COST Position: Q2 2026 in Review

Tidemark increased its Costco (COST) stake by 5.2% in Q2 2026, buying an estimated $38.9K and bringing the position to 785 shares worth $734K. The position accounts for 0.17% of the portfolio, ranked #72.

Tidemark first reported a position in COST in Q4 2023 and has held it in 11 quarters since. The position peaked at $743K in Q1 2026. 4,252 funds tracked by Wall St. Rank hold COST as of Q2 2026.

  • Tidemark held 785 shares of Costco worth $734K as of Q2 2026.
  • Tidemark bought 39 Costco shares in Q2 2026, an estimated $38.9K.
  • Costco made up 0.17% of Tidemark's portfolio in Q2 2026, its #72 holding.
  • Tidemark first reported a position in Costco in Q4 2023 and has held it in 11 quarters since.
  • Tidemark's Costco position peaked at $743K in Q1 2026.
  • 4,252 funds tracked by Wall St. Rank held Costco as of Q2 2026.

Based on Tidemark's 13F filing for Q2 2026, filed 10 Aug 2026.