In a companion piece to the UN Global Compact-Accenture CEO Study on Sustainability, the world's largest CEO study on sustainability to date, Chief Executives and Chief Investment Officers of signatories to the Principles for Responsible Investment assess the development of dialogue and engagement on sustainability with the companies in which they invest; discuss the potential of a new approach, focused on opportunity and business value; and reveal how companies and investors can better collaborate to unlock the potential of the private sector in tackling global sustainability challenges.