Interbrew is to take over Ambev, the Brazilian brewer, to create the world’s largest brewer by volume. Interbrew will pay Eu9.2bn (£6.1bn) for a 57% stake in AmBev and will form a new company called InterbrewAmbev, which will challenge the dominance of Anheuser-Busch with an estimated 14% share of the global beer market. Pierre Jean Everaert, currently chairman of Interbrew, will become chairman of the combined group, while John Brock, Interbrew's chief executive, will keep his role. AmBev's controlling shareholders will take 25% of InterbrewAmbev, while Interbrew's founding families will reduce their stake in the company from 63.7% to 50%. Shares in Interbrew fell by almost 6% following the announcement, amid fears that the company is paying too much for Ambev.