In a packed Las Vegas arena, Nvidia founder Jensen Huang stood on stage and marveled over the crisp real-time computer graphics displayed on the screen behind him. He watched as a dark-haired woman walked through ornate gilded double doors and took in the rays of light that poured in through stained glass windows.

Nvidia Corp. Chief Executive Jensen Huang's CES keynote seems to have been a positive momentum driver for at least one chip stock — but not his own. Micron Technology Inc. shares are rallying 3.6% in Tuesday afternoon trading.