Kazuo Hirai, Sony chief executive, told Mr Loeb that his board had unanimously voted against listing the business in New York, as he attempted to draw a line under a three-month campaign from the US billionaire. Sony shares fell 4.6pc in Tokyo on fears that Mr Loeb would sell out. Mr Loeb was recently criticised by actor George Clooney, who accused him of knowing nothing about the film industry. Mr Hirai said that it was in the best interests of investors to keep Sony together.