James River Group Holdings, which provides excess and surplus insurance and casualty reinsurance in the US, raised $231 million by offering 11.0 million shares (100% insider) at $21, below the range of $22 to $24. James River Group Holdings plans to list on the NASDAQ under the symbol JRVR. Keefe Bruyette Woods, UBS Investment Bank, FBR Capital Markets and BMO Capital Markets acted as joint bookrunners on the deal.