After the trader has selected the trading leverage, the percentage bar inside the order placement column can be used to quickly set an order's contract quantity with respect to the proportion of the account's available margin.
For the above example, the trader chooses 100x leverage and then selects 100%. The system will automatically calculate and display the maximum number of contracts quantity that can be opened for the account's 6.88 BTC.
Please pay attention to the following points:
1) The number of contracts quantity will not change automatically after the leverage is changed. The trader needs to re-click the percentage bar to update the latest figure.
2) Because of the differences in the way order costs are calculated for buying and selling contracts, the number of contracts quantity shown will be the lower of the two. For example, if you choose a 100x leverage, you can open a Buy Long of 600,000 contracts, while a Sell Short of 610,000 contracts with 100% of the available margin, the system will take the lower of the two and display 600,000. After the order is successfully submitted, there may still be some available margin remaining inside the account.
3) When using Conditional Orders, it is important to note that the calculated order cost is based on the selected trigger price. If 100% of the available margin were to be used, any change in the estimated execution price that requires a higher order cost will result in the order being rejected/canceled.