Tariffs have taken the spotlight as a policy issue as S&P 500 companies have discussed earnings with analysts since the U.S. presidential election, with investors awaiting clarity on what global trade under a Donald Trump administration may mean for stocks.

Spirit Airlines Inc. filed for a voluntary, pre-arranged Chapter 11 bankruptcy early Monday, capping a tumultuous period for the low-cost airline in which efforts to merge with two rivals fell through.

Builder sentiment increased to the highest level since April, the National Association of Home Builders said.