Onexim

Onexim Group, sometimes styled ONEXIM, is a Russian investment holding company founded in the 1990s by entrepreneur Mikhail Prokhorov. It operated as a diversified conglomerate, pursuing assets across mining, metals, banking, finance, media, and real estate. The company emerged during the post-Soviet privatization era as Prokhorov assembled holdings into a single vehicle to pursue strategic acquisitions and development opportunities.

During its peak, Onexim owned significant stakes in several major Russian enterprises, most notably in Norilsk Nickel (Nornickel) and Polyus Gold, and maintained interests in financial services and other sectors. The group participated in corporate restructurings, mergers, and asset sales that were characteristic of the ambitious privatization-era deals in Russia.

From the late 2000s into the 2010s, Onexim underwent restructuring, with many assets redistributed to sister companies and under the control of Prokhorov's broader business empire. The group’s standalone structure was scaled back, and the Onexim name subsequently appeared primarily as an umbrella for Prokhorov's diversified holdings and as a historical reference to the early phase of his business career.

Today, Onexim is commonly described as the investment arm associated with Mikhail Prokhorov, with its exact portfolio and corporate relationships having evolved through reorganizations, divestitures, and mergers. The trajectory of Onexim reflects the broader shifts in corporate governance and asset management that characterized post-Soviet Russian capitalism.