In any case, there is something strange going on, which is why I started looking at the logs on Polo. The Trade History page on Polo suggests that I have lost more than 1 BTC total on ADRD trading alone:
https://pixeldra.in/api/getfile/dSqKxjI have only traded ADRD with C.A.T. so this is very odd, as the Cumulative Gain reported by C.A.T. is positive 0.05 BTC.
I am still trying to figure out where this inconsistency comes from. I have looked at other coins traded too, and see a similar trend there. There is thousands of numbers to crunch here so this will obviously take a while to figure out.
Poloniex's trade analyzer is completely bogus. Someone should tell them. The method it uses to calculate profit and losses would not pass an accounting class. Don't ever use it.