DANBURY, Conn.--(BUSINESS WIRE)--IMS Health Holdings, Inc. (“IMS Health”) (NYSE:IMS) today announced the launch of a secondary public offering of 45.8 million shares of its common stock by existing shareholders affiliated with TPG Global, LLC, Canada Pension Plan Investment Board and Leonard Green & Partners, L.P., of which IMS Health intends to repurchase a number of shares having an aggregate value of $300 million. The selling shareholders have granted the underwriters an option to purcha