US stock futures were muted with a holiday-shortened week and downbeat month drawing to an end, before the Chicago Mercantile Exchange halted trading on Friday due to a data center glitch. The CME is gradually starting to restore operations after a long outage disrupted live trading in futures and options across several markets worldwide, including US Treasurys and US crude oil. Two foreign-exchange platforms reopened at around 7 a.m. ET, CME said, but didn't give any indication of when other trading migh ...