Abu Dhabi has shaken up its sovereign wealth fund sector by subsuming two funds into Mubadala, which is on the brink of doubling its assets to $250bn. Its new size will enable it to create “global champions.”

As one of the wealthiest countries in the world, the activities of Abu Dhabi’s sovereign wealth funds have been watched with a keen interest since their inception - particularly over the last year. 

After acquiring International Petroleum Investment Co (IPIC) in...