Micron's 86% Margin Guide Is the Number That Reprices MU

Memory Stopped Acting Like a Commodity

Micron has spent four decades as the textbook commodity cyclical — the kind of business whose gross margin collapses toward single digits the moment supply catches up to demand. This print breaks that framing. Fiscal Q3 landed at 84.6% GAAP gross margin, and management guided Q4 to roughly 86%. The core data center unit is already running an 87% gross margin on $11.52 billion of revenue.

Those are not memory-maker numbers — they are closer to what a software business prints. The mechanism is scarcity: HBM capacity is sold out under multi-year hyperscaler supply agreements, which converts what used to be volatile spot pricing into something that looks contracted and durable. The market is repricing MU on the bet that this margin profile is structural, not the top of another cycle.

The Print

Revenue came in at $41.46 billion, up from $9.30 billion a year ago — a roughly fourfold jump — and well past the ~$35.6 billion consensus. Non-GAAP EPS was $25.11 against expectations near $20.60. But the line that actually moves the model is the forward guide: Q4 revenue of $50.0 billion ± $1.0 billion, sitting about $8.5 billion above the record quarter Micron just reported.

The data center business did most of the work, with core data center revenue of $11.52 billion, roughly double the prior quarter's $5.69 billion. HBM4 is in high-volume shipments for Nvidia's Vera Rubin platform, with HBM4E slated for 2027. Cash generation matched the income statement: $25.39 billion in operating cash flow against $7.1 billion of capex. CEO Sanjay Mehrotra framed it bluntly — the results "reflect the strategic value of memory in the AI era."

The Setup at $1,205

This is the third leg of the post-earnings move. MU's perp is up 17.97% over three hours to roughly $1,205, with about $619 million in 24-hour volume on the HIP-3 market — a sign traders are still pressing the move rather than fading it.

The sell-side has already moved the goalposts. Bank of America's Vivek Arya reset his target to $1,500, a Street-high, though that number went out into the print during Tuesday's broad chip-stock selloff, not after. At $1,205 it still implies roughly 24% more upside. The risk cuts the other way too: MU rallied hard into a unanimously bullish Street, so the bar was already high, and a guide this far above consensus is exactly what justified the gap. The easy repricing is now done. What is left to litigate is whether ~86% gross margins hold as HBM4 supply scales and Samsung and SK Hynix push their own AI memory into the same demand.