(Reuters) - Federal Reserve Governor Jerome Powell is the leading candidate to become the chair of the U.S. central bank after President Donald Trump concluded a series of meetings with five finalists on Thursday, Politico reported, citing three administration officials. The officials cautioned that Trump, who met with current Chair Janet Yellen for about half an hour on Thursday, has not made a final decision, according to the Politico report. (politi.co/2insOp2) 