@Francois G: One more question. Do the whatif orders work for you also when the market is closed (like on weekends)? I'm asking because I ran the program on the weekend and yesterday before the market opened and it gave me wrong results. Now I rerun the same program (no changes) and it gives me correct results! Well and this although the market is closed again (US options). Maybe it is because I try it on the paper trading account?