Powell adds optimism to path forward and Trump picks a running mate Yahoo Finance's Catalysts reboots our 10AM hour, diving deeper into the day's biggest market stories. Plus, what are the chain reactions? We explain the ripple effect. Find this and other episodes of Catalysts https://finance.yahoo.com/videos/series/catalysts/. Thoughts? Questions? Fan mail? Email us at [email protected]. Yahoo Finance's Catalysts is hosted by Seana Smith and Madison Mills. Learn more about your ad choices. Visit megaphone.fm/adchoices