BOSTON SCIENTIFIC CORP (BSX) Institutional Ownership and Insiders Activity

BOSTON SCIENTIFIC CORP (BSX) is widely held by institutional investors, with 7 tracked firms reporting positions valued at approximately $752.22M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Parnassus Endeavor Fund is the largest disclosed holder, reporting approximately $502.24M in BSX holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Parnassus Endeavor Fund representing the majority of disclosed value.