Many know the Sortino Ratio which defines risk as semi-variance, namely the risk of not achieving your desired return objective. What most don't know is that Dr. Sortino created a company to help advisors manage downside risk. Dr. Sortino recently retired and I have succeeded him in Sortino Investment Analytics. It's a multi-asset optimizer that uses active managers where it finds skill, and fills in with passive in market segments where skill has not been found.