US stock futures surge as Micron, Qualcomm spark chipmaker rally

US equity futures surged overnight with semiconductor names at the vanguard, after Micron (MU) and Qualcomm (QCOM) provided fresh positive signals to the market. Micron's fiscal year revenue came in at $37.4B, a striking +48.9% YoY increase, with gross margins of 39.8% and diluted EPS of $7.59 — numbers that reflect a powerful DRAM and NAND cycle recovery driven by AI server demand. Qualcomm posted $44.3B in revenue, up +13.7% YoY, with a 12.5% net margin and diluted EPS of $5.01, reflecting steady diversification across mobile and automotive end markets.

The Micron print in particular is the catalyst here — nearly 50% revenue growth signals that the memory upcycle is real and AI infrastructure spending is pulling through to the component layer. Qualcomm's more modest growth reflects a handset recovery plus early automotive design-win contributions. Both prints reduce the bear case that the chip rally was purely multiple expansion with no earnings support.

The second-order setup is whether the futures pop translates into sustained sector rotation or gets faded into the open. Semis have been a high-beta, sentiment-driven trade in 2024-2025, and a gap-up open after earnings beats is often a 'sell the news' moment for momentum traders. The key watch is whether MU can hold above its post-earnings level on volume, or if the move is front-run and reverses.

Bull case rests on Micron's revenue trajectory — 48.9% growth with expanding gross margins suggests the AI memory demand wave has real duration. Bear case is that QCOM's 12.5% net margin is thin for a fabless model, and the broader futures rally may be pricing in a best-case macro backdrop that doesn't materialize. Watch the cash open and any follow-through from the broader SOX index.