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Prosight Management’s Boston Scientific BSX Stock Holding History

Prosight Management’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
Q2 		$54.2M Buy
1,270,273
+474,726
+60% +$25.8M 9.34% 4
2026
Q1 		$49.9M Buy
795,547
+585,547
+279% +$46.8M 8.19% 2
2025
Q4 		$20M Buy
210,000
+133,900
+176% +$13.1M 4.14% 10
2025
Q3 		$7.43M Buy
+76,100
New +$7.88M 1.73% 22

Other funds holding BSX

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
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 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
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Prosight Management's BSX Position: Q2 2026 in Review

Prosight Management increased its Boston Scientific (BSX) stake by 60% in Q2 2026, buying an estimated $25.8M and bringing the position to 1,270,273 shares worth $54.2M. The position accounts for 9.34% of the portfolio, ranked #4.

Prosight Management first reported a position in BSX in Q3 2025 and has held it in 4 quarters since. 1,481 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

  • Prosight Management held 1,270,273 shares of Boston Scientific worth $54.2M as of Q2 2026.
  • Prosight Management bought 474,726 Boston Scientific shares in Q2 2026, an estimated $25.8M.
  • Boston Scientific made up 9.34% of Prosight Management's portfolio in Q2 2026, its #4 holding.
  • Prosight Management first reported a position in Boston Scientific in Q3 2025 and has held it in 4 quarters since.
  • 1,481 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Prosight Management's 13F filing for Q2 2026, filed 14 Aug 2026.