Durable Capital Partners LP secured $6 billion for its inaugural fund, London's Financial Times reported, citing people familiar with the matter.

Investors in the fund include investment banking firm Allen & Co. and the University of Michigan's endowment fund, the publication added, citing regulatory filings.

Durable Capital aims to invest in both public and private businesses. The firm has already backed private companies such as payments company Rapyd and used car sales website Vroom, according to the report.

Durable Capital founder Henry Ellenbogen declined to comment on the fund and his investors, the publication added.