Thanks, I tried that with no luck. I also tried placing the order in the pre-market, and that wouldn't get it to trip at the open either. I have a meeting set up with TD Amer to walk me through a tutorial of TOS On Demand monday morning, so I will see what they say.
I also wish Thinkorswim had an automatic, cancel-all orders/flatten position type of order based on time of day that you could use to flatten a position in a stock at a pre-determined time of day...say 15:55 hours EST just 5 mins before the close. I'm trying to implement a fully automated entry and exit day trade strategy, where all i have to do is decide on a position size the night before the market opens, and then the trade executions are automatic.
Oh wait, i think see the answer to that. Market-on-Close orders at TD Amer create a close of the position as close to market closing price as possible. But unfortunately i can't find that order in the platform.