Hello
Can anyone tell me how the IBKR paper trading via APIs is simulated ? This is how I am testing my system. I have a 3rd party tick data that I consume and build my predictions real-time (so I am not using any of the data feed from IBKR). When I place MKT order, is IB paper trading going to assume top of the bid/ask or is this last trade price or something else. I am not able to find any details on this. I would be grateful if anyone provide pointers.? When I compare my model performance after end of day using 3rd party tick data, I find the paper trading account and my own backtest significantly differs (I do account for slippage in time for my model computation and when the trade actually get placed)
Thanks
kris
