This note explains the rationale and derivation behind "return bridge," a key analytical tool used in the private equity industry to understand sources of value-add. The note elaborates on the advantages and the shortcomings of the return bridge.

In 2018, private equity firm Clayton, Dubilier & Rice celebrated its 40th anniversary and its 20th year under the leadership of CEO Don Gogel. In those decades, CD&R showed solid portfolio performance and generated strong returns for its investors - accomplishments attributed to its unique balance between operations and finance professionals. The firm made sure that, for every deal, it had both the finance and operations expertise to grow revenues, streamline operations, and truly turnaround distressed companies. But as CD&R entered into its fifth decade and its largest fund to date (nearly $10 billion AUM), competition, AUMs, industry "dry powder," and buyout valuations were all on the rise. Within CD&R, rapidly-evolving technologies, talent retention, and the prospect of Gogel's retirement presented additional sources of pressure. Gogel and his team had to consider whether CD&R could maintain its unique identity and continue to add value as it had in the past in the face of such circumstances.

This note introduces an "LBO model," the main performance assessment and valuation technique used in private equity industry.