As Charles Schwab's Joe Mazzola points out, markets may be down, but market breadth is not. The Mag 7 and Palantir (PLTR) were major culprits behind the red session. However, Joe considers the pullback a healthy one, noting high valuations appearing across stocks. Many investors are also waiting to hear what the FOMC and Fed chair Jerome Powell have to say at Jackson Hole. Joe examines how recent inflation and jobs data could impact Powell's tone in his upcoming speech.