Charles Schwab's Liz Ann Sonders talks about the rise in S&P 500 (SPX) 2026 earnings, due in part to AI strength. In this case, strong earnings have raised expectations and risk. There has been an inverse relationship between the 10-year Treasury Yield and S&P 500 performance, but that may be changing with rising inflation. Sonders warns concerns about inflation, driven by oil, AI and tariffs, could mean that the Fed will have to consider rate hikes this year.