Merck (NYSE: MRK) shares pop on encouraging results from its COVID-19 pill study. Alphabet (NASDAQ: GOOGL)(NASDAQ: GOOG) and General Motors (NYSE: GM) move one step closer to getting self-driving ride-sharing services on the road in California. Amazon (NASDAQ: AMZN) unveils Astro, a $1,000 robot for your home. Warby Parker (NYSE: WRBY) makes a strong debut on Wall Street. Zoom Video (NASDAQ: ZM) and Five9 (NASDAQ: FIVN) call off their marriage.