This AI stock could be poised for a breakout.Shoulda, woulda, coulda. That could be the refrain for some investors who didn't own shares of Nvidia (NVDA -1.99%) in recent years.No company has been at the center of the artificial intelligence (AI) boom as much as Nvidia. The demand for its graphics processing units (GPUs) has exploded, causing Nvidia's share price to skyrocket.Missed out on Nvidia's ginormous gains? Don't worry. Here's an AI stock you can buy right now.Think smallerIt's possible that Nvidia ...