Sandisk Corporation vs WESTERN DIGITAL CORPORATION, two Computer Hardware stocks. A side-by-side on valuation, growth, margins, returns, and what each price is betting.
These two shared a corporate parent until 2025, and the split assigned them different physics: Western Digital kept the hard drives, Sandisk took the flash. Flash currently wins the margin contest, 69.1% operating against 35.7%, but WDC wins the bottom line oddly, a 40.7% net margin flattered below the operating line. The market prices the flash story at 72.5 times earnings and the disk story at 34.5, twice the multiple for the sibling with the more violent historical cycle. Sandisk holds no debt and a 4.8 current ratio; WDC carries a modest 0.33. Free-cash yields match at 1.3-1.4%. Same ancestry, same boom, and a pricing gap that is pure belief about which storage medium owns the AI era.
Comparison updated 2026-07-10.
| Metric | SNDK | WDC |
|---|---|---|
| Price | $2084.54 | $578.52 |
| Market cap | $327.3B | $223.9B |
| Sector | Computer Hardware | Computer Hardware |
| Stage | Growth | Growth |
| P/E | 72.5 | 34.5 |
| P/B | 23.76 | 23.13 |
| P/S | 24.82 | 19.01 |
| EV/EBITDA | 59.9 | 61.5 |
| Revenue growth | +111.6% | +32.0% |
| Gross margin | 78.3% | 50.2% |
| Operating margin | 69.1% | 35.7% |
| Net margin | 34.2% | 40.7% |
| Return on equity | 32.7% | 49.6% |
| Return on assets | 26.4% | 31.9% |
| Return on invested capital | 34.3% | 26.5% |
| FCF yield | 1.4% | 1.3% |
| Dividend yield | — | 0.0% |
| Debt / equity | 0.00 | 0.33 |
| Current ratio | 4.78 | 1.49 |
| Altman Z (solvency) | 8.30 | 7.86 |
| Piotroski F (quality) | 6 / 9 | 6 / 9 |
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The stronger value is highlighted per metric where one is strictly better on that single number; it is not an overall verdict on either company. For informational and research purposes only. Not investment advice. Not a recommendation to buy, sell, or hold any security. boothcheck is not a registered investment adviser. Past performance does not guarantee future results.