Limitations on market orders lifted

Traders using the basic trading interface (the one in which you just enter the quantity of shares you want to buy or sell) are no longer limited to entering an order up to the size of the currently available order. For example, if only 200 shares are available for you to buy now, but you want 500, you can enter an order to buy 500 shares and the system will fill 500 shares at the best available prices (this is called a "market order"). In the basic trading interface, the cost of each trade is now just an estimate. This change should make trading using the basic interface much faster.

No changes have been made to the advanced trading interface that allows traders to place "limit orders" that ensure the price an order is filled. To learn more about the advanced trading mode, read this tutorial.