Pfizer-Allergan deal refocuses market on US tax-inversion rules
November 13, 2015 at 16:42 PM EST
WASHINGTON, Nov 13 (Reuters) - Pfizer Inc's buyout bid for Allergan Plc has financial markets on edge over a possible new move by the U.S. Treasury Department against tax-inversion deals, but the outlook for any such steps was still unclear on Friday.
