Western Digital (WDC, US) is a USA company in the Memory / HBM segment of the AI compute value chain — hard-disk and NAND flash storage supplier for AI data centers. As of October 04, 2026, its market cap is $149.7 billion ($149.7B), ranking #29 of 244 companies overall and #6 of 15 in the Memory / HBM segment (3.6% of the segment, 0.59% of the chain). Over the past year the stock gained 216.4% (52-week range 113.13 – 746.23 USD).
| Company | Western Digital（西部数据） |
|---|---|
| Ticker | WDC · US |
| Segment | Memory / HBM |
| Headquarters | USA |
| Market cap | $149.7B（$149.7 billion） |
| Close | 415.29 USD (October 04, 2026) |
| Today | -10.22% |
| 30 days | -11.46% |
| 1 year | +216.39% |
| 52-wk high / low | 746.23 / 113.13 USD |
| Share of segment | 3.6% (Memory / HBM: 15 companies) |
| Share of chain | 0.59% (244 companies combined) |
| Segment leader | Micron Technology ($1.21T) |
| Revenue (TTM) | $12.9 billion |
|---|---|
| Net income (TTM) | $9.3 billion |
| Employees | 40,000 |
| P/E ratio (TTM) | 17.1 |
| P/B ratio | 16.91 |
| Gross margin | 48.9% |
| Net margin | 72.9% |
| Dividend yield | 0.14% |
| Basis | TTM (source: StockAnalysis, 2026-10-05 07:49) |
| # | Company | Market | Market cap |
|---|---|---|---|
| 1 | Micron Technology MU | US | $1.21T |
| 2 | Samsung Electronics 005930.KS | KR | $1.20T |
| 3 | SK Hynix 000660.KS | KR | $998.6B |
| 4 | SanDisk SNDK | US | $251.8B |
| 5 | Kioxia Holdings 285A.T | JP | $201.3B |
| 6 | Western Digital WDC | US | $149.7B |
| 7 | GigaDevice 603986 | SH | $37.1B |
| 8 | Longsys 301308 | SZ | $20.7B |
| 9 | Hanmi Semiconductor 042700.KS | KR | $19.2B |
| 10 | Biwin Storage Technology 688525 | SH | $13.7B |