U.S. stock futures were mixed in premarket trading Monday at the start of a holiday-shortened week. Futures contracts connected by the Dow Jones Industrial Average were down about 0.5%, while S&P 500 futures were slightly lower and Nasdaq 100 futures were flat.

Stock index futures edged higher early Monday morning as investors prepared for a shortened trading week that will see stock markets close early for Christmas on Tuesday and remain closed until the morning of Dec.

Stock index futures were mixed on Monday, while yields were higher, as markets got ready for a holiday-shortened week. S&P 500 futures (SPX) -0.1%, Nasdaq 100 futures (US100:IND) +0.3% and Dow futures (INDU) -0.

Dow futures are set to resume losses this morning, as investors eye consumer confidence data before holiday closures