US Treasury Secretary Steven Mnuchin has said that senators from both parties are making progress on stimulus talks and more meetings are scheduled for later on Thursday. House Speaker Nancy Pelosi is set to speak later on. The S&P 500 Index has returned to positive territory after trading lower earlier in the day. Mnuchin has said that senators from both parties are making progress on stimulus talks and more meetings are scheduled for later on Thursday. House Speaker Nancy Pelosi is set to speak later on.