This AI company has found its groove.With high valuation comes high expectations, but Palantir Technologies (PLTR 2.53%) recently once again showed why it's one of the preeminent artificial intelligence (AI) growth stocks in the world. The stock jumped on the back of its strong second-quarter results, reported Aug. 4, and is up 575% over the 12 months ended Aug. 6.With such a strong performance, investors may be wondering if the momentum can continue, or if it is too late to buy the stock. Let's take a clos ...