This chart shows how much Brexit matters to the U.S. stock market By: MarketWatch October 17, 2019 at 11:13 AM EDT U.S. investors have brushed off geopolitical tension between the U.K. and the European Union. Read More >> Related Stocks: Adv Micro Devices Alphabet-A Alphabet-C Amazon.com Apple Facebook Intel Corp Micron Technology NVIDIA Corp Netflix S&P Depository Receipts