Early movers: SIAL, MSFT, BABA, GOOG, GM & more By: CNBC.com News September 22, 2014 at 07:37 AM EDT These are the stocks posting the largest moves before the bell. Read More >> Related Stocks: Alibaba Group Holding Ltd AutoZone Bank of America Barclays Plc ADR EMC Corp GX Defense Tech ETF General Motors Google, Inc. Hewlett-Packard Merck & Co Microsoft Sigma-Aldrich TTM Technologies Treehouse Foods Walgreen Company Yahoo