Thanks jcl.

Yes, the price history was not complete.

It appears that the trades in trades.csv that came after the end of the price history were ignored since the figures changed when the complete price history was in place. Can you confirm trades after the end of the price history are ignored, distorting the results? If so, is there an easy way to fix this? Or at least modify Simulate to print a message advising of the problem?

Thanks.