After-hours buzz: SanDisk, Qualcomm, AmEx & more By: CNBC.com News July 22, 2015 at 17:36 PM EDT Check out the companies making headlines after the bell Wednesday: Qualcomm, AmEx, San Disk & more. Read More >> Related Stocks: American Express Cirrus Logic Inc Qualcomm, Inc. SanDisk Corp Texas Instruments United Rentals