AMD stock plummets after Goldman Sachs says its rally isn’t sustainable By: MarketWatch April 06, 2017 at 11:30 AM EDT AMD’s stock sold off sharply after Goldman Sachs warned that its rally is unsustainable because of competition. Read More >> Related Stocks: Adv Micro Devices Intel Corp NVIDIA Corp PHLX Semiconductor Sector Index Qualcomm, Inc. Standard & Poors 500