The New York Stock Exchange is closed Monday for the MLK holiday. The CME and CBOT are also closed, and SIFMA recommends a holiday in the bond market. CME Globex trading continues as normal – so futures are open – but closes early at 13:00 ET (1800 GMT) and then reopens at 18:00 ET (2300 GMT). The currency market is open as always, but liquidity will weaken, especially if Europe exits.