Elliott Management Corp., the New York hedge fund run by billionaire Paul Singer, revealed a 5.1 percent stake in U.K. software group Micro Focus International Plc. The position, built via shares and contracts-for-difference according to a U.K. regulatory filing Monday, comes after reports Elliott is planning push for changes at Micro Focus, according to people familiar with the matter. Private equity firms could be interested in all or parts of Micro Focus, and some buyout firms have crunched the numbers and spoken to banks about the feasibility of a deal, Bloomberg previously reported. Micro Focus has had a tough 2018.