Certain research has shown that investors tend to put too much faith in past earnings. Over time, this leads to a stock being overbought in the lead-up to an earnings release and a short-term dip after the release. What Nvidia is experiencing is very normal.

The Dow Jones Industrial Average ( ^DJI) led the way higher, gaining over 450 points, or about 1.1%. The S&P 500 ( ^GSPC) gained 0.5%, and tech-heavy Nasdaq Composite ( ^IXIC) pared earlier losses to finish just above the flat line.

Nvidia reports earnings after the close. Forecasts are bullish, but commentators warn that there's little room for error with the stock at record levels.