Estimated Opening Quantity
Estimated Opening Quantity = Balance / Estimated Cost of Single Contract
Estimated Cost = Estimated Cost of Single Contract * Order Quantity
Calculation of Estimated Initial Margin and Transaction Fee:
Estimated Selling Initial Margin = Contract Quantity * Contract Value / Limit Price for Selling * Initial Margin Rate
1. Compared with the current position, the order of increasing current position quantity needs to calculate the cost, and vice versa. For example, if the current long position has 10 contracts, then the order in short position with contracts <= 10 has no cost, and the cost will be added for the quantity greater than 10, i.e. 10 should be added in the final estimated available sell order quantity for opening.
2. The actual opening quantity is related to position and the order status, and subjects to the final order result.