There may be some circumstances where your sell order is cancelled or rejected after you place it, including:
You have attempted to sell more units than you hold;
Your sell order was not filled in the market and expires at the end of the trading day;
The security is in a trading halt;
The security has been delisted;
The security is subject to a corporate action, such as a stock split or takeover bid;
It doesn't meet certain other checks or requirements (such as regulatory requirements).
In extremely rare circumstances, your order may be cancelled or rejected due to a market-wide trading halt.
If you're unsure of the reason your order was cancelled or rejected or you were unable to place a sell order, please reach out to our customer support team.