Order Reprints Print Article U.S. stock indexes gave up modest earlier gains to slide into the red in the final hour of trading on Thursday, to close slightly down on the day. Investors, economists, and political analysts were all looking ahead to an address by President-elect Joe Biden scheduled for Thursday evening, in which he is set to unveil his economic agenda and plans for further U.S. stimulus. The Biden team’s initial proposal is reportedly in the $1 trillion to $2 trillion range. U.S. government bond yields continued to rise on Thursday. Also... Close U.