Report: InBev mulls buyout of SABMiller as back-up : Shares of Miller Brewing parent SABMiller plc rose in trading Tuesday days after reports arose that Belgium brewing giant InBev was considering buying SABMiller as a possible back up to a potential $46 billion buyout of Anheuser-Busch Cos. Inc. SABMiller's shares rose more than 8 percent in trading on the London Stock Exchange Tuesday after the Financial Times reported May 24 that the deal between Anheuser-Busch and InBev, the world's biggest brewer by sales, was in the works but a SABMiller buyout remained a second option. SABMiller's stock closed up nearly 7 percent.