US futures hold higher as tech shares lead the charge after Micron earnings ease AI fears

Micron reported fiscal year 2025 revenue of $37.4 billion, a 48.9% jump year-over-year, with gross margins expanding to 39.8% and net margins at 22.8%, producing $7.59 in diluted EPS. The headline numbers arrived at a moment when the market had been nervously watching AI infrastructure spending for any signs of deceleration, and the results served as a direct rebuttal to that narrative.

The memory market is a highly leveraged proxy for AI capital expenditure cycles — when hyperscalers push hard on training and inference buildouts, HBM and DRAM demand follows. Micron's near-50% revenue growth reflects exactly that dynamic, and the strong margins suggest pricing power has held despite fears of oversupply. The names most directly touched are MU itself, but the read-through matters for the broader semis chain: NVDA, AMD, and the AI infrastructure trade more broadly.

The bull tension here is straightforward — if Micron's numbers confirm that AI demand is intact and growing, the stock may be undervalued relative to a forward earnings trajectory that analysts have been cautiously discounting. The bear tension is equally concrete: memory is a notoriously cyclical business, and peak-margin prints have historically preceded mean-reversion in pricing. A 49% YoY comp also sets a high base for the next cycle.

What to watch: forward guidance commentary on HBM allocation and pricing, any signals on DRAM spot prices, and whether the futures lift in broader tech holds through the open or fades as a 'sell the news' reaction sets in around MU specifically.