ZDA
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Zweig-DiMenna Associates’s Boston Scientific BSX Stock Holding History

Zweig-DiMenna Associates’s Portfolio BSX Stock Details BSX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-135,600
Closed -$12.9M – 68
2025
Q4 		$12.9M Sell
135,600
-18,850
-12% -$1.85M 0.92% 40
2025
Q3 		$15.1M Sell
154,450
-1,250
-0.8% -$129K 1.17% 29
2025
Q2 		$16.7M Buy
155,700
+32,700
+27% +$3.31M 1.72% 18
2025
Q1 		$12.4M Sell
123,000
-159,900
-57% -$16.1M 1.99% 16
2024
Q4 		$25.3M Buy
282,900
+11,900
+4% +$1.05M 2.13% 12
2024
Q3 		$22.7M Buy
271,000
+80,500
+42% +$6.35M 2.3% 11
2024
Q2 		$14.7M Buy
+190,500
New +$13.9M 1.67% 23
2013
Q4 		– Sell
-44,015
Closed -$517K – 259
2013
Q3 		$517K Buy
+44,015
New +$476K 0.02% 156

Other funds holding BSX

BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.47T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $127B AUM 43.98% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return