Micron Stock Soars 6% Pre-Market: Is the AMD-Microsoft AI Deal Fueling MU’s Rally?

Micron (MU) stock surged 6.25% (54.09 points) in pre-market trading on July 21, 2026, after closing 1.94% higher the previous session. The rally follows AMD's announcement of an expanded supply deal with Microsoft for AI computation needs, signaling a potential bullish catalyst for the memory chipmaker as cryptocurrency mining and AI infrastructure demand continues to accelerate.

Is The AMD-Microsoft Deal Fueling Micron’s Stock Price Surge?

Micron’s (MU) latest rally follows on the heels of AMD announcing a new deal with Microsoft. According to an official statement, AMD will expand on its CPU, GPU, networking, and software services for Microsoft Azure. AMD is a client for Micron’s memory chips and investors are likely expecting more revenue for the AI memory chip manufacturer following the deal.

Micron (MU) also recently announced a $250 billion investment plan for the US to ramp up domestic production. Both developments may have elevated investor sentiment, leading to a stock price rally.

Micron (MU) is one of the three primary AI memory chip manufacturers, along with SK Hynix and Samsung Electronics. The South Korean KOSPI stock market also opened in the green zone today. KOSPI’s upswing may have also trickled into the US stock market, pushing Micron’s (MU) stock price in the pre-market hours.

Another factor to consider is the falling inflation numbers in the US. CPI (Consumer Price Index) figures came in at 3.5% for June 2026. Falling inflation may have reignited hopes for an interest rate cut. The move may have aided in Micron’s (MU) stock price surge.

Can MU Sustain Its Rally?

Micron (MU) is riding the AI wave and is expected to hit new peaks in the coming years. Wall Street analysts have become increasingly bullish on MU’s future. However, there are some short-term risks.

Oil prices have surged after a re-escalation in the US-Iran conflict. While inflation has dipped for June 2026, the figures may rise for this month. If inflation surges, Micron’s (MU) stock price may see a dip as investors may decide to de-risk.