Ticker · held by 4 filers

MCK

MCKESSON CORP

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

Total value held

$7.10B

Total shares

11,959,728

Filers holding

4 · 6 positions

Caveat

long only · 13F-eligible managers only

Filers holding MCK

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 11,471,201 $6.70B 0.15%

2 Citadel Advisors · Ken Griffin CALLCOM 173,700 $142.5M 0.02%

3 Citadel Advisors · Ken Griffin PUTCOM 123,000 $100.9M 0.02%

4 Bridgewater Associates · Ray Dalio (founder) COM 67,413 $55.3M 0.20%

5 Citadel Advisors · Ken Griffin COM 63,128 $51.8M 0.01%

6 Renaissance Technologies · Jim Simons (founder) COM 61,286 $50.3M 0.08%

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 MCK 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