Castle Hook Partners’s Boston Scientific BSX Stock Holding History

Castle Hook Partners’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
2025 Q4	–	Sell	-27,449	Closed	-$2.68M	–	63
2025 Q3	$2.68M	Sell	27,449 -551,699	-95%	-$57.1M	0.01%	52
2025 Q2	$62.2M	Sell	579,148 -249,758	-30%	-$25.3M	0.35%	38
2025 Q1	$83.6M	Buy	828,906 +66,833	+9%	+$6.73M	0.87%	19
2024 Q4	$68.1M	Buy	762,073 +453,374	+147%	+$39.9M	0.84%	25
2024 Q3	$25.9M	Buy	+308,699	New	+$24.3M	0.48%	31

Other funds holding BSX

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Castle Hook Partners's BSX Position: Q4 2025 in Review

Castle Hook Partners sold out of Boston Scientific (BSX) in Q4 2025, closing a stake of 27,449 shares — an estimated $2.68M sold.

Castle Hook Partners first reported a position in BSX in Q3 2024 and held it in 5 quarters. The position peaked at $83.6M in Q1 2025. 1,791 funds tracked by Wall St. Rank hold BSX as of Q4 2025.

Castle Hook Partners reported no remaining Boston Scientific position as of Q4 2025 after selling out during the quarter.
Castle Hook Partners sold 27,449 Boston Scientific shares in Q4 2025, an estimated $2.68M.
Castle Hook Partners first reported a position in Boston Scientific in Q3 2024 and held it in 5 quarters.
Castle Hook Partners's Boston Scientific position peaked at $83.6M in Q1 2025.
1,791 funds tracked by Wall St. Rank held Boston Scientific as of Q4 2025.

Based on Castle Hook Partners's 13F filing for Q4 2025, filed 17 Feb 2026.