BSX · News · 20260806N

Competition and Market Share

BOSTON SCIENTIFIC CORP · 2026-08-06 · Importance 26 · Surprise 24

Third-party analysis cited share losses for Boston Scientific in electrophysiology (EP), indicating competitive pressure in cardiac rhythm procedures. The commentary also identified weakness in the WATCHMAN device franchise, which is used for left atrial appendage closure. Medtronic’s Affera mapping and ablation system with the Sphere-9 catheter received a European CE-mark expansion for ventricular arrhythmia treatment, potentially increasing competition in EP ablation.

Key facts

• FMR LLC and Abigail P. Johnson disclosed beneficial ownership of 46,378,258.61 shares of Boston Scientific common stock, representing a 3.1% stake as of June 30, 2026. source
• FMR LLC holds sole voting power over 39,968,563.03 shares and sole dispositive power over the entire 46,378,258.61-share stake, while Abigail P. Johnson has sole dispositive power over the same shares but no voting power. source
• Boston Scientific stock advanced 3.27% to $49.30 on Thursday and the company's shares closed 54.98% below their 52-week high of $109.50. source