MBT's quotes are from several banks. Sometimes, the quote of one of the banks may not be updated fast enough, and the quote appears as best bid or ask. If a market order is put at such a time, will the order be filled with a valid quote immediately (not the outdated quote of that bank), or will the order be held until that bank updates its quote? This is tricky, but I really want to know. Please advise if you know.
