What is the story? How much difference will they make? Will remote traders use them? "There will be a brand new order type introduced called the "Inter Market Sweep Order" (ISO). ISO Order types guarantee the possibility of price improvement, whether you specify that objective or not. For people at Assent, ISO orders will not be supported by Hammer. Only the Anvil trading platform will support ISO orders."... Landis82
They'll give you the best prices available on all market centers. It'll replace the "smart swipe" order from Anvil. The biggest difference is that the NYSE market orders, which sweep the open book, will be used less, because people will use ISO orders to sweep the NYSE, ARCA, ISLD, BATS, and EDGX books simultaneously.
works same as a swipe. On monday the reg nms went through so you should have seen what the change is. In a big move up/down i see as the only factor(can't sell/pay through anymore)