On the web
You can view the details of your trades on the web, under the "Statements" tab on your Dashboard.
You can also get your statement sent to you. Select "Send Statement" on the same page that you view your trades, as above.
On the app
On the app, select "More" on the bottom right, "Trading Statements and History", here you can see your statement.
Click on the 3 dots in the top right, then select "Send Statement" to get your statement emailed to you.
Select the date range you would like to view.