The Wall Street Journal reports an arm of Chinese conglomerate Fosun Group is seeking approval for a U.S. initial public offering of Ironshore Inc., the U.S. insurer it acquired last year for $1.84 billion. Fosun International Ltd. said Thursday it had submitted an application with the Hong Kong stock exchange seeking approval for a spinoff and separate listing of the insurance company on either the New York Stock Exchange or Nasdaq. Shanghai-based Fosun said it would make further announcements related to the planned IPO when appropriate or required under the listing rules. The potential size of the IPO wasn’t disclosed.