You are correct that there is zero volume but the price seems to be correct as far as the mid price is concerned
I am not sure how it was the day before
I don't think the volume has anything to do with the price not showing When that happens it usually says N/A
It may not be accurate if there is no volume but it would still show something
As far as Fidelity I placed the same trade as in TOS and at first it showed the midpoint as 0.00 but than I deleted one of the strikes and entered it again ( the 14 feb 3230) and than it showed 2.10 for the mid the same as TOS
Maybe there was a glitch or some intermittent problem
In any case you should be able to simulate the position in TOS regardless of the volume by entering the price for the calendar
I am not sure how it was the day before
I don't think the volume has anything to do with the price not showing When that happens it usually says N/A
It may not be accurate if there is no volume but it would still show something
As far as Fidelity I placed the same trade as in TOS and at first it showed the midpoint as 0.00 but than I deleted one of the strikes and entered it again ( the 14 feb 3230) and than it showed 2.10 for the mid the same as TOS
Maybe there was a glitch or some intermittent problem
In any case you should be able to simulate the position in TOS regardless of the volume by entering the price for the calendar