Wall St slips on megacap declines ahead of Powell's testimony | Reuters
1. Steelmakers rose after Trump announced new steel and aluminum tariffs. 2. Steel Dynamics (STLD) gained 1.1% amid favorable market conditions. 3. Inflation data and Fed policy expected to influence broader market outlook. 4. Major indexes dipped as megacap stocks struggled. 5. Upcoming CPI data may impact Fed interest rate decisions.