In the case of Dorrance v. United States, CA9, 116 AFTR 2d ¶2015-5505, reversing DC Arizona, 111 AFTR 2d 2013-1280 a divided panel concluded that stock received from demutualization of an insurance company has a basis of zero.  Note that this viewpoint is at odds with the holding of Federal Circuit Court of Appeals in the case of Fisher v. United States, 102 AFTR 2d 2008-5608 (2008), affd 105 AFTR 2d 2010-35 (2009) creating a split in the circuits on this issue.