Core Viewpoint - The S&P 500 Index experienced mixed performance due to investor reactions to corporate earnings from major tech companies and the Federal Reserve's interest rate decision [1] Group 1: Corporate Earnings - Most of the Magnificent 7 companies reported their earnings, influencing investor sentiment and market performance [1] Group 2: Federal Reserve Interest Rate Decision - The Federal Reserve's decision on interest rates played a significant role in shaping market reactions and investor strategies [1]