Let's tackle what's going on in the markets Monday.
The markets were in a tailspin because of the U.S.-China trade war.
On Monday morning, the Chinese yuan weakened below the 7-per-dollar level for the first time since May 2008.
President Donald Trump weighed in on the issue, by saying that the weakened yuan was "currency manipulation."
Kenny Polcari, managing principal at Butcher Joseph Asset Management, weighs in on the three signals to sell a stock because of trade headlines.
"You know you don't want to make a hasty decision. You've got to look at your portfolio and you've got to decide why you have the names," said Polcari. "And so the only reason you might, you might want to decide to sell a name is if there's been a real fundamental change in the story. The fact that the market's off 2% today based on currency wars doesn't necessarily change the fundamentals of the story."
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