George Soros, the billionaire hedge fund investor, has lost his 17-year legal battle to overturn an insider trading conviction following a ruling by France's court of last resort. He is now expected to take his fight to the European Court of Human Rights.

France's Court of Cassation, which judges final appeals, rejected Soros' bid to overturn his conviction in 2002 for using confidential information to trade profitably in shares of Société Générale during a 1988 takeover battle, according to Bloomberg.