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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
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 $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

Tidemark's COST Position: Q1 2026 in Review

Tidemark increased its Costco (COST) stake by 8.3% in Q1 2026, buying an estimated $55.5K and bringing the position to 746 shares worth $743K. The position accounts for 0.19% of the portfolio, ranked #64.

Tidemark first reported a position in COST in Q4 2023 and has held it in 10 quarters since. 4,239 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Tidemark held 746 shares of Costco worth $743K as of Q1 2026.
  • Tidemark bought 57 Costco shares in Q1 2026, an estimated $55.5K.
  • Costco made up 0.19% of Tidemark's portfolio in Q1 2026, its #64 holding.
  • Tidemark first reported a position in Costco in Q4 2023 and has held it in 10 quarters since.
  • 4,239 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Tidemark's 13F filing for Q1 2026, filed 7 May 2026.