Reason why the ASK number did not seem to move is this... Level 2 shows there are currently 4 MM's on the ASK...they list the MM with the most shares to offer at the top...so you were seeing the numbers posted by MM CANT ....but those buys did not have to come from him...they could have come from any of the other 3 MM's, NITE, AUTO, or UBSS... if they did you would not see the numbers on the lead MM change... hope that helps.