5. Warburg Pincus
New York, United States
Warburg Pincus can trace its origin to 1939 and the foundation of E.M. Warburg & Co. The company has decided early on that their sole business would be private equity and have been true to that decision in the last 50 years. With more than $30 billion raised in investment funds in the last five years, Warburg Pincus is highly ranked among the most successful private equity firms in the world. Their investments are spread over 40 countries all over the world.