Whale Analyzer
Top public holders · 13F and disclosure aggregation

Who owns BSX? 13F holders and whale ownership

BSX is tracked across public portfolios in Whale Analyzer. This page answers who owns BSX, which top funds are buying BSX, aggregate disclosed value, and recent position changes based on public data.

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6Tracked holders
$2.98BAggregate reported value
2026-05-19Page updated
4 reduced, 2 increasedRecent changes

Top holders

InvestorReported valueSharesChange
PRIMECAP Management 13F portfolio
PRIMECAP Management Company holdings
$2.04B32.5MIncreased
Edgewood Management 13F portfolio
Edgewood Management LLC holdings
$478.7M7.6MReduced
Lee Ainslie 13F portfolio
Maverick Capital holdings
$263.2M4.2MIncreased
Samuel Isaly 13F portfolio
OrbiMed Advisors holdings
$149.5M2.4MReduced
Polen Capital 13F portfolio
Polen Capital Management holdings
$36.4M579.7KReduced
Stephen Mandel 13F portfolio
Lone Pine Capital holdings
$6.6M104.7KReduced

How to read this page

Values are reported public positions from tracked investors and institutions. They are not real-time ownership totals for the company.

This page is generated from public filings and public disclosures. It is for research and education only and is not investment advice.

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Frequently asked questions

Who owns BSX stock?

Whale Analyzer tracks 6 public institutional holders of BSX with a combined reported value of $2.98B. See the holder table above for the largest tracked positions.

Which top funds are buying BSX?

Check the "Change" column in the holders table above. "New" means a fresh position was initiated, "Added" means an existing position was increased, and "Reduced" or "Sold" indicates trimming.

What does 13F ownership mean for BSX?

Use the interactive BSX dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.