Has been in market for more than 15 years. Over the years strategy changed with ones experience and learning. Sometime change for the better, sometimes worst. One indication is using Cumulative XIRR across all trades through the years. For Cory, due to strong performance in 2019, the Cumulative XIRR since 2007 is now 7.2% as above. However this is from 2007 when Cory is still