I am surprised you were even able to trade this morning. My td was pulled the minute the symbol changed. My broker said till they have confirmation from company on exact change of shares to be given we are in a holding pattern. He did say once they have confirmation the change is immediately entered into system. You can buy new and sell on the new symbol but recommend at point switch over comes and you have a sell in on new ticker price and don't want it to effect old shares..to contact TD direct for how to handle thru tax lot so correct sell shares are effected if you don't know how. GLTA!