Janus Henderson Group Plc
An active asset manager that picks stocks, bonds, and other investments for institutions and everyday savers around the world, one of the largest of its kind. It was born in 2017 when two older firms merged: Denver-based Janus Capital (founded in 1969) and London's Henderson Group (founded in 1934 to manage a financier's fortune). Its name nods to Janus, the two-faced Roman god of beginnings and endings—fitting for a company built on two sides of the Atlantic.