That's interesting that you can place simulated "on opening" orders with IB. Support told me that I COULD NOT place any orders until the market had opened: not until 9:30am.
I notice that IB keeps improving their platform,thats great but doe's anyone get frustrated that you have to keep learning new ways of placing orders?
JJ
I try not to take what "tech support" tells me too seriously - I have been (had been) in the software industry long enough to know that unless you look at the source code, you do not know what a piece of software will allow you to do or not do.
I this case, since we do not have the source to TWS, the best next thing is to try it! I put in two limit orders of 100 shares each on the same stock before the market opens. I have been filled several times at the opening print on each.
Try it for yourself and see what happens!
nitro