When I look up the trading hours for the YM and the ES I get the following: Monday - Thursday: 3:30 PM to 4:30 PM (C.S.T.) and 5:00 PM to 3:15 PM (C.S.T.) the next day. The shut down period is 4:30 PM to 5:00 PM. (C.S.T.) Sunday and Holidays 5:00 PM to 3:15 PM (C.S.T.). My question is what happens between 3:15 PM to 3:30 PM C.S.T. Monday through Friday??? Thank you for your response.