Janus Capital has named David Corkins portfolio manager of its flagship Janus Fund as part of a revamp by chief executive Gary Black.

Corkins replaces Blaine Rollins, who will replace Ron Sachs as portfolio manager of Janus Triton Fund, a small- and mid-cap growth fund introduced in February 2005. Sachs will continue to manage Janus Orion Fund, a multi-cap growth fund he has run since its inception in 2000.