when is market close
Market-On-Close Order - MOC. What is a 'Market-On-Close Order - MOC'. A market-on-close order (MOC) is a non-limit market order that is executed as close to the end of the market day as possible. All MOC orders must be submitted by 3:45 p.m. ET on the NYSE and by 3:50 p.m. ET on the Nasdaq, as both of them close at 4 p.m. and neither exchange allows for the modification or cancellation of MOC orders after those times.