Quote from macal425:
IB TWS simulated trading mode works in real time. I have run the simulator and the full TWS at the same time and the prices are exactly the same. The simulated fills seem fairly accurate also. It doesn't just fill a limit order as soon as the price is hit.
I don't think it does... I'm using TWS right now and I'm getting completely different prices on TWS than on MB which streams live market prices real-time.
The prices I'm getting on TWS seem about a week old from the way it looks.
MB streams live for 30 days I think then its becomes 3 days delayed and recorded.
The only issue with MB is their ES demo accounts are glitched right now. Positions are cleared for no reason and after market trades are wacked. You can enter aftermarket trades but you cannot exit them.
I wonder if there are any other brokers that offer real time streaming quotes for a demo account. Everyone I come across has a problem of some kind and I'm not sure I feel like downloading 20 - 30 platforms to find a working one with real time data.