Head to head · SEC data as of October 27, 2026
Micron
94
Quality score · out of 100
Western Digital
92
Quality score · out of 100
On paper this one is nearly a draw: Micron scores 94 and Western Digital scores 92 out of 100 in our fundamental quality model. Micron wins on gross margin (80.7% vs 52.6%), cash generation (FCF) (44.3% vs 29.6%) and revenue growth (36.9% vs -2.9%). Western Digital answers with net margin (69.2% vs 63.8%) and ROE (107.2% vs 61.4%).
| Metric | Micron | Western Digital |
|---|---|---|
| Quality score (0-100) | 94 | 92 |
| Net margin | 63.8% | 69.2% |
| Gross margin | 80.7% | 52.6% |
| ROE | 61.4% | 107.2% |
| Net debt/EBITDA | -0.3× | -0.09× |
| FCF margin | 44.3% | 29.6% |
| Revenue growth (annualized) | 36.9% | -2.9% |
| Earnings growth (annualized) | 70.6% | 54.2% |
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.
Open your account in minutes with regulated brokers and buy U.S. and European stocks from small amounts. No paperwork.
The serious investor's standard
Open free account →Anyone who wants low commissions and access to almost any market in the world.
Popular in the U.S.
Open free account →Anyone investing in the U.S. who wants a powerful, commission-free stock app.
Investing carries risk of loss.
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?
They're practically tied: Micron and Western Digital score 94 and 92 out of 100 in the StockSemáforo model (profitability, growth and financial strength, built on official SEC data). 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.
Other comparisons
Microsoft vs Apple · Microsoft vs Google · Apple vs Google · Meta vs Google · Oracle vs IBM · See all comparisons →
Who's behind the methodology and model · how the score is computed
Data: official SEC filings (EDGAR) · Recomputed on October 27, 2026
Spotted a figure that looks wrong? Report it and we'll review it.