Eight US firms have come out on top this week after completing what is thought to be China’s biggest ever leveraged buyout – the $3.7bn (£2.2bn) take-private of Chinese advertising display company Focus Media Holding.

The deal, which closed last night (23 May), received shareholder approval in April for a buyer consortium to acquire the remaining shares in the Nasdaq-listed company for $27.50 (£18.23) per American Depositary Share.