Contact a portfolio company of has entered into an agreement to divest its global custom research business to Duff & Phelps Advised GfK SE, a Portfolio Company of Kohlberg Kravis Roberts & Co, on the Contemplated Divestiture of Four Global Divisions to Ipsos S.A. Over 3,500 employees and 28 countries around the world GLOBAL LOCATIONS GET IN TOUCH CAREERS Duff & Phelps is headquartered in New York with offices around the world. 55 East 52nd Street New York New York 10055 +1 212 871 2000 SUBSCRIBE TO DUFF & PHELPS COMMUNICATIONS Sign up Sign up to receive periodic news, reports, and invitations from Duff & Phelps. Our privacy policy describes how your data will be processed FOLLOW US Facebook Twitter LinkedIn Youtube Cookies Disclosure EU U.S. Privacy Shield Legal Slavery and Human Trafficking Statement Privacy © 2019 Duff & Phelps, LLC. All rights reserved. Duff & Phelps is a trade name for Duff & Phelps, LLC and its affiliates. Read more.