13 not equal to zero, so which is it?.
all the other fields zero but gain of 13 makes no sense
If you have any sell transaction in 2020 you have to report it on your tax return.
Closing a short sale in 2020 is also reported
if you know the cost and proceeds, enter those amounts from your own records.
date acquired is the date you closed the short sale.
date disposed is two business days later (settlement).