This operating performance figure (not sales or earnings per share) will tell the tale of whether or not Nvidia's parabolic run-up is sustainable.

Nvidia (NASDAQ: NVDA) may be the most-watched stock on the planet these days. Though it's already climbed a mind-boggling 800% over the past two years, many investors and analysts think the stock still has plenty of room to run.

Nvidia (NASDAQ:NVDA) is set to report earnings on February 26, and it can be a major catalyst for the AI chipmaker. Investors will get to see how much the business is growing and receive guidance for what future growth will look like.

Long a Wall Street favorite, Nvidia stock has struggled recently, gaining 4% over the last six months, worse than the S&P 500’s 7% return.

Wall Street is once again fixated on Nvidia, as the main player in the artificial intelligence mania is set to report earnings after the bell Wednesday and give an update on demand for its semiconductors,