"Sell All" button for selling shares

A sell all button would be a great option to have when selling under review order which automatically sets the number of shares to what we are holding and takes us to the review order button.

I’m sure the convenience of this will have the spill-over effect of resulting in more instant trades too, as the UX is eased for sell-offs.

When fractional shares come in, it will compliment it well by removing the need of the user to type in a decimal number with trades too.