Charles Schwab's Kevin Horner sees the S&P 500 (SPX) stuck in a sideways consolidation near all-time highs, holding its 50-day moving average as traders wait for a catalyst. He highlights Target (TGT) up 62% year to date and finding support around $154-$155, while Amgen (AMGN) has pulled back from highs and is recapturing key moving averages near $405 with upside potential back toward $445-$450.