Support Board

For example, if the Bid Quantity at price 100.0 is 50 and the quantity goes down to 40, then this is a reduction of 10 which will adjust the current Pulling and Stacking value down by 10. And then if there is a trade of 5, this will increase the current Pulling and Stacking value by 5 giving an overall change of the Pulling and Stacking value of -5. The reason for this last adjustment is that the reduction of the buy limit orders (Bid Quantity) from 50 to 40, was in part related to a trade of quantity 5, not actual pulling of limit orders.