Yes, you can. However, your order will not be executed immediately.

When will my orders be placed?

Assuming you have enough funds, if you invest within market hours (10 am - 4 pm on ASX trading days), the order will be placed immediately. Otherwise, it will be queued and placed 10:30 am - 11:30 am when the market re-opens.

What's the difference between queueing and placing an order?

Placing is when we submit an order to our brokerage partner. Queueing is an internal system that automatically places an order once you have enough cleared funds. You can queue multiple orders back-to-back and they will be handled in the order they were queued.

You also have the option to change when your queued orders get placed now. Activate and access the experimental feature here.