Stock Market Today, Dec. 18: Micron Technology Surges on Record Results and News It Is 'Sold Out'

Micron Technology (NASDAQ:MU), a leading memory and storage chipmaker, closed Thursday at $248.55, up 10.11%. Trading volume reached 63.9 million shares, about 139% above its three-month average of 26.7 million shares. Micron Technology IPO'd in 1984 and has grown 17,528% since its initial public offering. Today's move followed record fiscal Q1 2026 results and a blowout revenue outlook. Micron beat estimates on both earnings per share and revenue.  Investors will be watching how high-bandwidth memory growt ...