Give me the WKN or ISIN. I suspect that the KO and strike price were different. If not, it was the loss pot. However, this would be booked separately on the TR statement as a tax adjustment.
@Captain_Stanton You can no longer call it up because the KO was made a long time ago. But take a look at the credit note in the transactions. There you can see where it came from.
@Captain_Stanton yes, that is as suspected, the strike price and the KO were at different thresholds. This happens when the bill runs longer, then the KO is regularly raised by a few cents to cover the issuer's costs. raised. This leaves a residual value in the case of the KO.