MU vs WDC: Micron Technology and Western Digital as AI Stocks
Micron Technology (MU) and Western Digital (WDC) are both tracked in the Supercycle AI universe. MU is the larger company at $1.21T versus $19.20B, and MU carries the higher AI Exposure Score (78 vs 42, Core tier), meaning its business depends more directly on AI demand.
Market data as of the close on . Prices are end of day, not live.
Side by side
| Metric | MU | WDC |
|---|---|---|
| Price | $1,071.88 | $473.69 |
| Market cap | $1.21T | $19.20B |
| 24h change | -2.22% | +1.96% |
| 7d change | +15.69% | +13.60% |
| 1y change | +563.90% | +332.65% |
| P/E ratio | 24.2 | 18.4 |
| AI Exposure Score | 78 (Core) | 42 (Growing) |
| Sector | Technology | Technology |
| Buildout layers | Memory & StorageSemiconductors | Memory & Storage |
MU's role in the buildout
Micron anchors the Memory & Storage layer of the buildout and sits in the Semiconductors layer more broadly. AI accelerators are only as fast as the memory feeding them, and Micron's HBM3E ships directly into those systems, with capacity committed well in advance. AI memory demand now dominates its pricing, product mix, and the entire investment thesis, which is why Supercycle scores it 78 out of 100, close to pure play territory.
WDC's role in the buildout
Western Digital sits in the Memory & Storage layer of the AI buildout. AI training runs on massed data, and cloud and AI data centers buy its high-capacity drives as the cheap bulk storage tier underneath that data. AI-driven nearline demand underpins the growth story, though the company also rides general cloud and client storage cycles that have nothing to do with AI. Supercycle scores Western Digital's AI exposure at 42 out of 100.
Both stocks sit in Memory & Storage, so they compete for the same slice of AI spending.
Frequently asked questions
Is MU or WDC the bigger company?
Micron Technology is bigger: $1.21T versus $19.20B by market cap, as of the latest end-of-day data.
Which has more AI exposure, MU or WDC?
Micron Technology does: its AI Exposure Score is 78 (Core tier) versus 42 (Growing). The score measures how much of the business depends on AI, not which stock is the better investment.
Related comparisons
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