CNBC's Jim Cramer warned investors about taking every individual stock move to heart.
He said these sudden moves are often arbitrary, and suggested investors focus on a company's underlying business.
"Sometimes you can extrapolate a great deal from a big move in an individual stock, but more often it's telling you something you already know or it's just noise that means nothing."
While it's difficult to decipher this "noise," Cramer conceded that irregular moves can be valid signals.
Other times, the action in the stock is noise, not a signal, and you'll end up feeling very foolish if you take your cue from that kind of action."
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CNBC's Jim Cramer, Don't, Cramer, it's