After-hours buzz: Vivint, H&R Block, Encana & more By: CNBC.com News March 04, 2015 at 17:20 PM EST Check out which companies are making headlines after the bell Wednesday: Vivint Solar, H&R Block, Encana & more. Read More >> Related Stocks: American Eagle Outfitters Embraer-Empresa Brasileira DE Aeronautica ADR EnCana Corporation Genl Dynamics Greif Bros Corp H&R Block Johnson & Johnson PetSmart, Inc. Vivint Solar Inc