Dow, S&P 500 open lower ahead of Powell comments - Reuters

Dow, S&P 500 open lower ahead of Powell comments  Reuters5 things to know before the stock market opens Tuesday  CNBCStock market news live updates: Stock futures drift ahead of Powell appearance  Yahoo FinanceDollar Extends Rally for a Few Key Breaks, S&P 500 Throttles its Descent  DailyFXS&P 500 Settles Lower, Market Volatility Decreases - Apple (NASDAQ:AAPL), Amazon.com (NASDAQ:AMZN)  Benzinga