Ticker · held by 3 filers

TMO

THERMO FISHER SCIENTIFIC INC

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

Total value held

$17.10B

Total shares

30,860,517

Filers holding

3 · 5 positions

Caveat

long only · 13F-eligible managers only

Filers holding TMO

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 29,529,326 $16.33B 0.37%

2 Citadel Advisors · Ken Griffin COM 690,405 $400.1M 0.06%

3 Citadel Advisors · Ken Griffin PUTCOM 351,700 $203.8M 0.03%

4 Citadel Advisors · Ken Griffin CALLCOM 287,400 $166.5M 0.03%

5 Bridgewater Associates · Ray Dalio (founder) COM 1,686 $977.0K 0.00%

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 TMO 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