Goldman Sachs is gunning for a bigger slice of business in the booming buyout market on two fronts, after drawing up plans to double the size of its infrastructure fund to $6bn (€4.7bn) and hiring seven bankers to its leveraged and high-yield debt team.

The US bank, which became the first bulge-bracket investment bank to move into the infrastructure market in October last year, is planning to reopen its $3.5bn fund for a second round of capital raising with a target size of $6bn by the end of the year, according to a research report from UBS.