With stocks near all-time highs, John Kosar says that the market has moved too quickly and that some elements now suggest that a correction could come soon.
"I'm a little nervous up here," the technician told "Futures Now" on Tuesday. "There are a lot of indicators we're looking at, including investor sentiment, that are about as frothy as they've been in about 10 years. So I think there are a lot of little thing that, as you add them up, show that you need to be careful up here."
Reason No. 1: Investors are too bullish
The market's extreme bullishness is a "contrary indicator," said Kosar, director of research at Asbury Research. He noted that the Investors Intelligence Survey shows an outsized number of bulls.
"This is about as bullish as this group has been," he said. "When these people are all on the boat, oftentimes the boat's getting close to tilting."
Such extraordinary sentiment often occurs just before a drop in the market.