I am trying to use the MOC orders in my coming trades. But it is stated that it is NOT GUARANTEED to be executed. It scares me a lot because I don't want to see the stock positions the next day if I have submitted a MARKET orders. Here are questions about MOC orders: 1> What is the percentage of MOC orders not executed? 2> Is it a better idea to submit MKT orders at 15:59:50 instead?