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 shares gain as ASML and Foxconn both say they still see strong signs of demand for artificial-intelligence semiconductors.

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,