How much do you trust the numbers they show on the Analyze tab on ThinkOrSwim? I analyzed a credit ratio backspread yesterday on LVS, as an earnings play (Long 20 $95 puts, short 10 $100 puts): using their software they showed for today a low breakeven point at $102. Today the breakeven point is around $95. The potential profit for a big drop (to $90 for example) is still the same but there are big differences in the $95-$105 area. This is the first time I see such a difference. Could it be because of pre/post earnings volatility? You would think that it would not make a difference in this situation as both puts would be affected and anyway the software does not take into account earnings, just theo values. Did this happen to someone else? Is the tool in Options Express more reliable?