The company said the facilities would boost its manufacturing capacity for DRAM and high-bandwidth memory products. - Todd Meier for WSJ Micron Technology shares rallied in premarket trade after the company said it would build a second site in Taiwan to manufacture highly sought-after artificial-intelligence memory products. The stock rose 4%, or $17.16, to $443.29 in early European trade Monday, making it the sharpest riser in the S&P 500 premarket. Most Read from The Wall Street Journal The Boise, I ...