https://grafioschtrader.github.io/gt-user-manual/en/basedata/bankruptsecurity/index.htmlPeriod performance values a client only on trading days for which every held instrument has a closing price. If a single instrument has no price that day, the whole day drops out of the report. Once that gap reaches the present, no usable trading day remains. That is exactly what happens when the issuer of an instrument no longer supplies prices — for example a bond after a bankruptcy whose Active until date is still the maturity. The connectors keep trying and keep finding nothing. Linear filling of missing price data closes the gap once; the next trading day is another gap, and the reports of everyone holding the instrument stall again.Hugoen