It is your responsibility to maintain records of all open orders. For instance, another order may have been received before yours, or there may not be enough shares available to buy or sell at your price limit. The securities exchanges have established rules regarding the execution of orders at each price level. You will be charged a full commission for each portion of the same order that is executed on a different day. If an order is executed in portions but all on the same day, then one commission will be charged.
All open orders remain in effect until executed or canceled.
To change the limit price on an open order, you must inform the trader that this is an open order and that you want to change the limit. It is your responsibility to cancel prior orders when you place a substitute order. You will be responsible for settling any transaction that results from your failure to cancel such orders. Automatic Cancellation of Open Orders We will automatically cancel your open order 60 calendar days after it is placed. If this day falls during a weekend or on a holiday, the order will be canceled on the next business day.