On the MoveEnergyM&AWalter Energy (WLT +1.7%) powers into positive territory after a Doug Kass tweet speculates...Aug. 15, 2012 11:34 AM ETWalter Energy, Inc. (WLT) StockWLT, XSRAF, XSRAYBy: Carl Surran, SA News Editor4 CommentsWalter Energy (WLT +1.7%) powers into positive territory after a Doug Kass tweet speculates Xstrata (OTC:XSRAF, OTC:XSRAY) is considering a ~$47.50/share bid for the coal producer. Shares had been down 5% earlier in the session.Recommended For YouRelated StocksSymbolLast Price% ChgWLT--Walter Energy, Inc.Trending AnalysisTrending News