Quadrangle Group Overview

General Information

Quadrangle Group is a multi-family office headquartered in New York. Founded in 2000 by former Lazard partners led by Steven Rattner, the firm’s capital base originates from the founders’ investment-banking earnings and early media-focused private equity successes. It manages assets for multiple affluent families, offering private equity, public equity and alternative strategies—deploying sector expertise to build long-term media and communications holdings.