← The Code Deck
/ deck / lab/portfolio / ticker / MP
Ticker · held by 4 filers

MP

MP MATERIALS CORP

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

Total value held
$508.2M
Total shares
19,089,009
Filers holding
4 · 5 positions
Caveat
long only · 13F-eligible managers only
Filers holding MP
# Filer Class Shares Value (USD) % of port
1 Citadel Advisors · Ken Griffin CALLCOM CL A 3,717,200 $187.8M 0.03%
2 Citadel Advisors · Ken Griffin PUTCOM CL A 3,225,800 $163.0M 0.02%
3 BlackRock · Larry Fink COM CL A 12,071,183 $153.7M 0.00%
4 Bridgewater Associates · Ray Dalio (founder) COM CL A 62,458 $3.2M 0.01%
5 Soros Fund Management · George Soros / Robert Soros COM CL A 12,368 $624.8K 0.01%

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 MP 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