Likewise, I'll either stay up or go to sleep and set the alarm to wake up at sugar's open at 2:30AM, followed by coffee at 3:30AM and cocoa at 4AM Eastern. Also, some of my best setups and quick profits by bangin' the open. Market On Open = MOO. Unlike, Market (some say Murder) On Close, MOC. Amateurs tend to be sloppy, sleepy and lazy, often missing the open altogether, not even knowing when it is even.