KEY POINTS
  • The stock market's rally Wednesday following better-than-feared Nike and FedEx earnings offers a lesson for investors, according to Jim Cramer.
  • It's misguided to focus purely on Federal Reserve commentary and predictions on where S&P 500 will go next, he said.

CNBC's Jim Cramer said Wall Street's reaction Wednesday to quarterly results from Nike and FedEx offers an important lesson for investors: It's misguided to focus purely on Federal Reserve commentary and predictions on where S&P 500 will go next.

Both companies on Tuesday night reported better-than-feared earnings, sending their respective stocks higher and helping to boost sentiment across the market. All three major U.S. stock indexes posted strong gains Wednesday, reversing some of the declines seen in December.