Dow futures slid more than 300 points after the bond market, for the first time in over a decade, flashed a warning signal that has an eerily accurate track record for predicting recessions.

Traders work after the closing bell at the New York Stock Exchange (NYSE) on August 12, 2019 at Wall Street in New York City. - Wall Street stocks finished a bruising session sharply lower as worries about slowing growth and the protracted US-China trade war hit banking shares and the broader market. (Photo by Johannes EISELE / AFP)

(Photo credit should read JOHANNES EISELE/AFP/Getty Images)