Early movers: NBG, JPM, M, GCI, TWTR & more By: CNBC.com News June 29, 2015 at 07:52 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Aetna Amazon.com Anthem Inc Cigna Corp Element Fleet Mgmt Corp Energy Transfer Equity LP General Electric Humana Integrys Energy Group J B Hunt Transport JPMorgan Chase & Co Macy's Nokia Corp ADR Novartis Ag ADR Tegna Inc Twitter, Inc. Wisconsin Energy Corp eBay