Global stocks climb after Yellen comments; dollar near flat

Yellen, who was testifying on the economic outlook before the congressional Joint Economic Committee, indicated little had changed yet following the victory of Donald Trump in the Nov. 8 U.S. presidential election. The dollar index , tracking the greenback relative to a basket of key foreign currencies, was last up 0.1 percent. U.S. stocks, which rallied after Republican Donald Trump's surprise White House win, were mostly higher.