They just delivered their first billion-dollar HBM quarter during the greatest semi boom in history, yet gross margins are guiding down sequentially.
Thesis: Micron is a derivative play on TSMC's CoWoS capacity, not a sovereign memory maker. While HBM revenue is ramping, the cost to compete (3x silicon trade ratio) and dependency on foundry allocation caps the upside. The 'sold out' narrative masks a physical inability to capture incremental demand, while legacy consumer weakness drags on margins.
Verdict: AVOID — Conviction: MEDIUM
Catalyst: The 12-high HBM volume ramp in 2H 2025 and the subsequent margin inflection (or lack thereof) in FQ4.
Key Risk: Yield struggles on the 12-high ramp or a faster-than-expected deterioration in consumer DRAM pricing.
The Tell: The CFO refused to guide FQ4 margins beyond 'up somewhat,' despite the massive HBM ramp narrative. If the HBM mix shift was truly accretive immediately, the margin visibility would be clearer.
Friction Level: HIGH_FRICTION — Bulls see 'sold out' as pricing power; Bears see it as a manufacturing ceiling where upside is capped by TSMC CoWoS allocation and silicon trade ratios.
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