Rally Cap Monday: Despite a highly uncertain future, stock indexes rally to post modest gains. Apple, Facebook, Microsoft, Netflix lead gainers. Airline shares hit. #LasVegas gaming stocks a mixed bag. https://t.co/zWUaCK7iez @CNBC #stockmarkets #business $AAPL $FB $MFST $NFLX https://t.co/Zd2dW6QOkO