Ticker · held by 4 filers

BSX

BOSTON SCIENTIFIC CORP

All tracked filers currently holding BSX, ranked by position size. Each row links through to the filer's full portfolio.

Total value held

$10.63B

Total shares

135,964,032

Filers holding

4 · 8 positions

Caveat

long only · 13F-eligible managers only

Filers holding BSX

sorted by position size · click any filer to see their full portfolio

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 126,418,364 $9.74B 0.22%

2 Citadel Advisors · Ken Griffin COM 4,775,618 $455.4M 0.07%

3 Renaissance Technologies · Jim Simons (founder) COM 2,382,705 $227.2M 0.35%

4 Citadel Advisors · Ken Griffin CALLCOM 660,600 $63.0M 0.01%

5 BlackRock · Larry Fink CALLOPTIONS 800,000 $61.6M 0.00%

6 Citadel Advisors · Ken Griffin PUTCOM 600,000 $57.2M 0.01%

7 BlackRock · Larry Fink PUTOPTIONS 233,000 $17.9M 0.00%

8 Bridgewater Associates · Ray Dalio (founder) COM 93,745 $8.9M 0.03%

What this is

This page reverses the usual 13F view: instead of "what does Buffett hold," it answers "who holds NVDA?" Across the dozen tracked filers, all current 13F-disclosed holders of BSX are listed, with the position size and what fraction of each filer's overall portfolio it represents.

Caveats: only the filers tracked here are included (~12 names) — not the whole 13F universe (~6,000 filers). Position values are at the most recent quarter-end, not current market price. Only long positions are visible; shorts and synthetics aren't.

v0.2 · 2026 · data via SEC EDGAR · CUSIP→ticker via OpenFIGI