A native of Tennessee, he began his investment career with Dean Witter in 1984 and soon became an investment consultant for several notable Tennessee corporate pension plans. Dirk served as co-host of the WLAC radio program Money Talk. In 1989, he co-founded Mabry-Calvin, LLC which became a registered investment adviser with the state of Tennessee in 2010 and was renamed to Sage Investment Counsel LLC in 2020. Dirk enjoys golfing and bird hunting with his son Jackson.