Dow, S&P and Nasdaq futures were all in the red as Bejing announced it was raising its tariffs on U.S. goods again, escalating their trade war.

U.S. stock index futures fell on Friday after China increased its tariffs on U.S. imports to 125%, escalating a trade war that could disrupt global trade and trigger an economic downturn.

U.S. stock futures point to a lower open on Thursday, a day after a historic surge on President Donald Trump's 90-day pause on some of his most aggressive tariffs.