New Delhi, Feb. 18 -- US stock indices were mixed on Tuesday, as investors focused on potential trade tariff developments and the Federal Reserve's interest rate strategy.

At 09:57 a.m. ET, the Dow Jones Industrial Average fell 99.35 points, or 0.22 per cent, to 44,444.83, the S&P 500 gained 5.87 points, or 0.10 per cent, to 6,120.62, and the Nasdaq Composite gained 33.71 points, or 0.17 per cent, to 20,060.48.

At the opening bell, the Dow Jones Industrial Average rose 37.8 points, or 0.08 per cent, to 44583.91. The S&P 500 rose 7.0 points, or 0.11 per cent, to 6121.6​, while the Nasdaq Composite rose 63.8 points, or 0.32 per cent, to 20090.554.

In the bond market, the yield on the 10-year Treasury rose to 4.51 per cent from 4.48...