Hedge fund Elliott Management builds $3 billion stake in SoftBank - sources

NEW YORK (Reuters) - Hedge fund Elliott Management Corp, one of the world's most powerful activist investors, has amassed a nearly $3 billion (£2 billion) stake in SoftBank Group Corp and is pushing for changes to boost the Japanese conglomerate's value, sources said. Elliott's involvement is likely to cast new light on SoftBank's financial track record, which has been scrutinized heavily by investors after several of its expensive bets on startups around the world, including office..