our new conti, page-9

This might sound dumb, but who is buying or selling if it won't allow us to lodge any orders. I just tried it out for the "exercise" and comes up saying insufficient holdings? Not a problem, but what if some mega announcement came out and it hit a $1.00 today and someone wanted to sell?? lol... I know, it'll never happen but I would like to know that if I wanted to sell I know what the hell to do here!!!! Can anyone please help!!!!:)))