Minority deals have surged as a proportion of private equity activity since the financial crisis and look set to grow further in the coming years amid a shortage of traditional buyouts, according to research from Boston Consulting Group.

Figures released by BCG on Thursday show that the proportion of private equity deals where the buyer has taken a minority stake has more than doubled since the financial crisis, accounting for 27% of global deals since 2008. This compares with 13% of buyout transactions between 2004 and 2007.