Equity Group Investments (EGI) is a Chicago-based private investment firm and family office founded by Sam Zell in 1968. EGI operates with an open investment mandate and invests opportunistically across industries and geographies. The firm deploys capital across the full capital structure — public and private companies, equity and debt — and takes both controlling and non-controlling positions. EGI pursues long-term, flexible investments rather than a single-sector focus; its activity spans operating-company investments and structured capital positions. Headquartered in Chicago, the organization traces its origins to Sam Zell and functions as the family’s principal investment vehicle. EGI does not publish a consolidated AUM figure publicly in the available materials. The firm’s distinguishing feature is its open mandate and ability to structure transactions across equity and debt, including control-equity positions, which provides sponsors access to a single counterparty that can partner through multiple deal types and holding horizons.