Anyone with anything bad to say about Nvidia (NASDAQ: NVDA) over the past four months has probably had to eat their words. The stock has almost doubled in value since the new year, an impressive feat for a mega-cap blue chip stock.

I'll admit it doesn't feel good going against the market, but there is evidence that Nvidia's epic run could soon end. There are already warning bells ringing that investors should listen to.

Excitement over artificial intelligence has Nvidia stock soaring, but here are some things to consider before the company reports earnings in a few weeks.

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Source Fool.com