The Dow Jones, S&P 500, Russell 2000, and Nasdaq-100 all ended lower. Advance Auto Parts (AAP) was the biggest laggard on the day after a disappointing earnings report. American Airlines (AAL) was slightly higher on the day after raising its outlook, citing continued strength in demand. Shares of Twilio (TWLO) reached 2-month highs on a report that activist investor Legion Partners met with the company and is pushing for changes. Tomorrow, look out for earnings from Dollar General (DG), Macy's (M), Lululemon (LULU), Broadcom (AVGO), Mongo-DB (MBD), and Zscaler (ZS). Tune in to find out more about the stock market today.