BOSTON SCIENTIFIC CORP (BSX) Institutional Ownership

BSX is currently held by 7 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $752.22M based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Parnassus Endeavor Fund, which reported ownership valued at approximately $502.24M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Parnassus Endeavor Fund's BSX position is now estimated to be worth approximately $355.85M, representing an estimated loss of -29.15% since the filing period.

Major shareholders tracked on this page include Parnassus Endeavor Fund, Renaissance Technologies LLC, Polen Capital Management, and other prominent asset managers. Collectively, these investors account for approximately 100% of the total disclosed value among the investors covered in this analysis.

This page tracks institutional position trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward BOSTON SCIENTIFIC CORP (BSX).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 20267$752,216,60511,987,516
Q4 20259$2,149,637,54422,544,704
Q3 20258$2,098,564,83921,495,082
Q2 20257$681,063,5886,340,784
Q1 20256$321,185,9803,183,842
Q4 20245$207,440,9102,322,446
Q3 20246$114,973,3591,371,997
Q2 20244$11,331,187147,139
Q1 20245$127,967,5471,868,412
Q4 20235$139,616,6992,415,096
Q3 20235$65,663,9361,243,635
Q2 20235$7,317,074970,345

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