I put in an order for 3 million shares on the ask but but the time the broker completed the order the asked moved higher. I went in and tried to modify the order on line and it again said I had to call the broker to change it. At that poing I said to heck with and and that it just wasn't meant for me to buy it at that time. For now I just left my order in GTC. Maybe we wlll see a dip.
Remember that when someone tries to convince you to buy or sell there is something in it for them. It's not because they are concerned about your investment.