S&P 500 futures reversed course and closed lower after hitting a new all-time high of 6,756. The Fed Chair spoke for the first time since the last FOMC meeting and reiterated that there is no set path for rates. Volatility moved higher as the index moved lower, reaching its highest close since September 2. New home sales data is expected tomorrow, while durable goods and the PCE Index are on the calendar later this week.