BSX — D BOSTON SCIENTIFIC CORP COM

Ownership history in S&CO INC  ·  93 quarters on record

This page tracks every 13F SEC filing in which S&CO INC reported a position in D BOSTON SCIENTIFIC CORP COM (BSX). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
1.22% (2025 Q2)
Avg. % of fund
0.39%
First filed
1999 Q2
Last filed
2025 Q4
Quarters held
93
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 170,881 -2,395 -1.4% 1.01% $16.3M $95.35
2025 Q3 REDUCED 173,276 -3,510 -2.0% 1.04% $16.9M $97.63
2025 Q2 REDUCED 176,786 -937 -0.5% 1.22% $19.0M $107.41
2025 Q1 ADDED 177,723 +16,584 +10.3% 1.20% $17.9M $100.88
89 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    BSX price (monthly, adj. close)

Other funds also holding BSX

As of 2025 Q4 — sorted by position size

Bollard Group LLC 3Y 7Y 45.28% SurgoCap Partners LP 6.76% Tri Locum Partners LP 3Y 6.44% ECOFI INVESTISSEMENTS SA 6.18% Catalio Capital Management, LP 6.07% Egerton Capital (UK) LLP 3Y 7Y 5.58% FACT Capital, LP 3Y 5.11% ORBIMED ADVISORS LLC 3Y 7Y 4.71% Iron Triangle Partners LP 3Y 4.59% Parkman Healthcare Partners LLC 3Y 4.54%
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