Head to head · SEC data as of July 10, 2026
Micron
94
Quality score · out of 100
Western Digital
89
Quality score · out of 100
Micron comes in ahead: a quality score of 94 versus 89 for Western Digital. Micron wins on gross margin (72.6% vs 45.4%), cash generation (FCF) (29% vs 24.7%) and revenue growth (28.5% vs -5.9%). Western Digital answers with ROE (67.3% vs 50.1%).
| Metric | Micron | Western Digital |
|---|---|---|
| Quality score (0-100) | 94 | 89 |
| Net margin | 55.9% | 55.3% |
| Gross margin | 72.6% | 45.4% |
| ROE | 50.1% | 67.3% |
| Net debt/EBITDA | -0.23× | -0.12× |
| FCF margin | 29% | 24.7% |
| Revenue growth (annualized) | 28.5% | -5.9% |
| Earnings growth (annualized) | 66.7% | 47.4% |
TTM metrics with official SEC data, refreshed daily. Bold green marks the winner of each metric. A dash means the metric doesn't apply or isn't reliable.
Micron. Micron is one of the few large global makers of memory chips (DRAM and NAND flash): the ones that store data in phones, computers, cars and data centers. It's a very cyclical business, with sharp price swings between shortages and gluts.
Western Digital. Western Digital makes high-capacity hard drives (HDDs) for data centers, after spinning off its flash business (SanDisk). The HDD looked doomed… until AI exploded the need to store oceans of cheap data.
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What this comparison doesn't tell you
The score measures business quality, not whether the stock is cheap or expensive: the better company can be the worse investment if you overpay. For the valuation verdict, enter each one's current price in the analyzer:
Who has the stronger fundamentals today, Micron or Western Digital?
By the StockSemáforo model (profitability, growth and financial strength, built on official SEC data), Micron scores higher: 94 versus 89 out of 100. The score is recomputed nightly with the latest filings.
Does that make Micron the better investment?
No. The score measures business quality, not valuation: an excellent company can trade at an excessive price and be a poor investment at that price. To find out whether it's cheap or expensive, enter its current quote in the StockSemáforo analyzer.
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