Ticker · held by 3 filers

BLK

BLACKROCK INC

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

Total value held

$869.7M

Total shares

812,546

Filers holding

3 · 5 positions

Caveat

long only · 13F-eligible managers only

Filers holding BLK

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

# Filer Class Shares Value (USD) % of port

1 Citadel Advisors · Ken Griffin COM 403,819 $432.2M 0.06%

2 Citadel Advisors · Ken Griffin PUTCOM 228,200 $244.3M 0.04%

3 Citadel Advisors · Ken Griffin CALLCOM 172,100 $184.2M 0.03%

4 Bridgewater Associates · Ray Dalio (founder) COM 4,581 $4.9M 0.02%

5 Renaissance Technologies · Jim Simons (founder) COM 3,846 $4.1M 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 BLK 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