Apply the Hidden attribute to a large volume order to completely hide the submitted quantity from the market.
You want to buy 5000 shares of XYZ but don't want your order to affect or be seen by other traders in the market. Display the Hidden field from the Layout Manager, and check the Hidden attribute in the order line. Your order is submitted but evidence of the order is hidden from the market.
Note: Any stock or option symbols displayed are for illustrative purposes only and are not intended to portray a recommendation.