In the TD Ameritrade cellphone app and in the browser site (I tried both) in post market after hours, I can't seem to sell Facebook at $261.06 a share even though the bid is 261.30 and the ask was 261.80. There is 20 million in volume. It's set to GTC and FIFO. What am I missing here?
On TD Ameritrade, an order submitted as GTC (Good Till Canceled) will not execute during after-hours trading; it can only execute while the market is officially open (usually during the hours of 9:30 am to 4:00 pm, US Eastern time, on weekdays).
To get an order to execute during after-hours trading, you can submit it as GTC + Ext (Good Till Canceled, with extended hours).