History indicates that a market pullback of 5-10 percent will happen, but such a dip will represent a buying opportunity, strategist Sam Stovall told CNBC.
"It's really just a matter of time," said Stovall, S&P Capital IQ's chief equity. "Let's face it, we've had declines of 5-20 percent on average every year since World War II, so it's really not such a brave call to say that we're going to have another one."