Wall Street opens lower amid global growth risks

"Today's decline is not a surprise as investors have had a chance to take a step back and look at things and go, 'Well maybe it's not all that good'," said Paul Nolte, portfolio manager at Kingsview Asset Management. "We are not yet calling for a recession, but I think the risks of a recession are starting to rise." Nolte said. Global markets recovered some losses stemming from the Brexit vote last week, but weak economic data and worries over the fallout of the decision curtailed the rally.