In order to buy shares in a market with only one contract, click on the buttons labelled ‘Buy Yes’ or ‘Buy No.’ In markets with multiple contracts, click on the prices offered.
The next screen shows, under Best Available Offers, the five least expensive offers you can match in order to buy shares. Enter the number of shares you wish to buy and the maximum price you are willing to pay in the spaces provided. You can buy as many shares as you like—up to a limit of $850 per contract—so long as you have sufficient funds in your account.
After clicking ‘Preview,’ you’ll have the opportunity to review your request before submitting. It’s possible that another trader will have bought the shares you want between the time you looked at the list of offers and the processing of your request.
You sell shares the same way that you buy them.