David Tramontan / SOPA Images / LightRocket / Getty Images Spotify shares slid after the music streaming service said co-founder and CEO Daniel Ek will step down Key Takeaways Major U.S. equities indexes edged lower Tuesday afternoon, as a potential government shutdown loomed. Spotify shares slid after the music streaming service said co-founder and CEO Daniel Ek will step down. Pfizer shares gained as the pharmaceutical firm and the Trump administration struck a deal to lower drug prices. Major U ...