Major U.S. stock-indexes little changed on Tuesday, ahead of Federal Reserve Chair Janet Yellen's speech on monetary policy. Yellen, who is due to speak before the Economic Club of New York at 16:20 GMT, will make her first remarks since the Fed's meeting in March. The central bank has said it will depend on economic data before it makes a decision on rates, but several policymakers have voiced support for more than one increase this year. Investors will keep a close eye on Yellen's speech as they look for fresh drivers that could push stocks higher.

Dow stocks mixed (15 vs 15). Top looser - The Boeing Company (BA, -1,71%). Top gainer - Apple Inc. (AAPL, +1,51%).

S&P sectors also mixed. Top looser - Basic Materials (-1,7%). Top gainer - Consumer goods (+0,3%).

At the moment:

Dow 17392.00 -56.00 -0.32%

S&P 500 2024.00 -4.00 -0.20%

Nasdaq 100 4403.75 +14.25 +0.32%

Oil 37.94 -1.45 -3.68%

Gold 1225.80 +5.70 +0.47%

U.S. 10yr 1.86 -0.01