Nvidia was gaining early Thursday amid signs of robust demand for artificial-intelligence chips from the wider market.Nvidia shares were up 1.7% at $148.77 in morning trading. The stock fell 1.4% on Wednesday.

To that end, Nvidia bears frequently highlight custom AI chips from big technology companies like Amazon ( AMZN 2.48%) and Alphabet ( GOOGL -1.51%) ( GOOG -1.54%) as cause for alarm. While both companies have designed custom silicon for their data centers, recent commentary should put Nvidia investors at ease.

Nvidia reports its much-awaited third-quarter results next Wednesday after the market close. Shares are in a buy zone. Technically, that makes Nvidia stock a buy. But investors who follow the IBD Methodology and realize there's earnings risk are wondering,