After-hours buzz: AT&T, Amgen, VMware & More By: CNBC.com News April 22, 2014 at 17:00 PM EDT Check out which companies are making headlines after the bell Tuesday: AT&T, Amgen, VMware & More Read More >> Related Stocks: AT&T Inc Amgen Atlantic Power Corp Gilead Sciences Nabors Industries Skechers USA Ord Shs Cl A Vmware Inc