Stocks opened little changed on Tuesday, with investors wary of taking new positions before the Federal Reserve's interest rate decision.

The Dow Jones industrial average .DJI was up 28.21 points, or 0.21 percent, at 13,755.24. The Standard & Poor's 500 Index .SPX was up 1.25 points, or 0.08 percent, at 1,517.21. The Nasdaq Composite Index .IXIC was up 6.14 points, or 0.23 percent, at 2,725.09.

(Reporting by Ellis Mnyandu; Editing by Kenneth Barry)