It was a mixed day on Wall Street as Jerome Powell testified to the Senate Banking Committee. Supermicro (SMCI) added postmarket volatility after releasing its preliminary earnings ahead of its expected 10-K filing. Tesla (TSLA) experienced intraday volatility before ultimately selling off. As for the winners, Intel (INTC) rallied off American A.I. optimism as Coca-Cola (KO) gained thanks to a strong earnings report. Caroline Woods turns to the day's biggest headlines.