Ticker · held by 4 filers

WDC

WESTERN DIGITAL CORP.

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

Total value held

$4.12B

Total shares

40,105,894

Filers holding

4 · 7 positions

Caveat

long only · 13F-eligible managers only

Filers holding WDC

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

# Filer Class Shares Value (USD) % of port

1 BlackRock · Larry Fink COM 28,085,156 $2.13B 0.05%

2 Citadel Advisors · Ken Griffin PUTCOM 5,278,800 $909.4M 0.14%

3 Citadel Advisors · Ken Griffin CALLCOM 3,557,300 $612.8M 0.09%

4 Citadel Advisors · Ken Griffin COM 1,319,766 $227.4M 0.03%

5 Renaissance Technologies · Jim Simons (founder) COM 992,533 $171.0M 0.27%

6 BlackRock · Larry Fink CALLOPTIONS 800,000 $60.6M 0.00%

7 Bridgewater Associates · Ray Dalio (founder) COM 72,339 $12.5M 0.05%

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 WDC 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