Two Platinum Partners hedge funds have sought U.S. Chapter 15 bankruptcy protection as part of an ongoing liquidation effort, according to court documents filed in New York federal court Tuesday. In August, a Cayman Islands court ordered that an outside expert unwind the so-called offshore versions of its flagship hedge fund, Platinum Partners Value Arbitrage, which, along with the firm, is also being investigated by U.S. authorities. That liquidator, RHSW Caribbean, filed the Chapter 15 bankruptcy petition which seeks to protect Platinum's U.S. assets from creditors while an insolvency proceeding is underway in the Cayman Islands. Mark Nordlicht founded Platinum more than a decade ago and generated years of double-digit percentage returns by investing in often controversial businesses, a Reuters special report revealed. Read more.