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Breakwater Investment Management’s Costco COST Stock Holding History

Breakwater Investment Management’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 		$67.8K Sell
68
-15
-18% -$14.6K 0.03% 144
2025
Q4 		$71.6K Sell
83
-1
-1% -$906 0.03% 137
2025
Q3 		$77.8K Buy
84
+3
+4% +$2.88K 0.03% 127
2025
Q2 		$80.2K Hold
81
– – 0.03% 127
2025
Q1 		$76.6K Hold
81
– – 0.03% 128
2024
Q4 		$74.2K Hold
81
– – 0.03% 128
2024
Q3 		$71.8K Hold
81
– – 0.03% 130
2024
Q2 		$68.8K Hold
81
– – 0.03% 127
2024
Q1 		$59.3K Buy
+81
New +$57.8K 0.03% 133

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

Breakwater Investment Management's COST Position: Q1 2026 in Review

Breakwater Investment Management reduced its Costco (COST) stake by 18% in Q1 2026, selling an estimated $14.6K and leaving 68 shares worth $67.8K. The position accounts for 0.03% of the portfolio, ranked #144.

Breakwater Investment Management first reported a position in COST in Q1 2024 and has held it in 9 quarters since. The position peaked at $80.2K in Q2 2025. 4,238 funds tracked by Wall St. Rank hold COST as of Q1 2026.

  • Breakwater Investment Management held 68 shares of Costco worth $67.8K as of Q1 2026.
  • Breakwater Investment Management sold 15 Costco shares in Q1 2026, an estimated $14.6K.
  • Costco made up 0.03% of Breakwater Investment Management's portfolio in Q1 2026, its #144 holding.
  • Breakwater Investment Management first reported a position in Costco in Q1 2024 and has held it in 9 quarters since.
  • Breakwater Investment Management's Costco position peaked at $80.2K in Q2 2025.
  • 4,238 funds tracked by Wall St. Rank held Costco as of Q1 2026.

Based on Breakwater Investment Management's 13F filing for Q1 2026, filed 15 May 2026.