请问这个Due Date是做什么的？ 不是只有卖空才有T＋3的due date么？在Online help里面看到这样一句话
When are the shares bought due for delivery?
All shares purchased will be due for delivery on transaction + 3 market days (T+3).
When does payment have to be made for shares bought?
Payments can be made anytime within the 3 market days settlement period. However, all
payments must reach us no later than 3 market days from the date of transaction by 5.00pm. If payment is not received by due date, the contract will be forced-sold by the company without notification。
