U.S. stocks opened slightly higher Tuesday as investors focused on the Federal Reserve's much anticipated two-day policy meeting this week. Investors are still split about whether the Fed will raise interest rates or choose to delay. The S&P 500 opened 7 points, or 0.4% higher at 1,960. The Dow Jones Industrial Average added 60 points, or 0.3%, to 16,427 at the open. The Nasdaq Composite began the day up 11 points, or 0.2% at 4,817.
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