U.S. stock-index futures fell as investors were cautious ahead of Federal Reserve Chair Janet Yellen's speech, which could give more clarity on the possibility of an interest rate hike at the Fed's March meeting.

Global Stocks:

Nikkei 19,469.17 -95.63 -0.49%

Hang Seng 23,552.72 -175.35 -0.74%

Shanghai 3,219.19 -10.84 -0.34%

FTSE 7,367.75 -14.60 -0.20%

CAC 4,989.22 +25.42 +0.51%

DAX 112,024.18 -35.39 -0.29%

Crude $52.85 (+0.46%)

Gold $1,230.60 (-0.19%)