Ticker · held by 3 filers

OGN

ORGANON & CO

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

Total value held

$700.9M

Total shares

36,273,866

Filers holding

3 · 5 positions

Caveat

long only · 13F-eligible managers only

Filers holding OGN

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COMMON STOCK 32,579,067 $674.4M 0.02%

2 Citadel Advisors · Ken Griffin COMMON STOCK 2,062,974 $14.8M 0.00%

3 Bridgewater Associates · Ray Dalio (founder) COMMON STOCK 909,225 $6.5M 0.02%

4 Citadel Advisors · Ken Griffin PUTCOMMON STOCK 406,900 $2.9M 0.00%

5 Citadel Advisors · Ken Griffin CALLCOMMON STOCK 315,700 $2.3M 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 OGN 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