I saw the prices printed lower than my limit price on my GTC limit buy order that I left overnight (to buy puts option at $1.1) during regular trading hours the following day (this morning) but my order was NOT executed. The inherent loss of income amounts to $4K as I am writing this email. I emailed Ameritrade and they replied with the following email response "The asking price of this option was only at $1.10 or lower for 2 seconds all within the first 8 seconds of the market. Nothing is due on your order" I got the impression that they didn't want to pay the pipe for what I thought was a result of their mistake. What should I do? Thanks all in advance.