U.S. Federal Reserve chair Janet Yellen speaks to the Economic Club of New York in New York March 29, 2016.

Stocks rose and the dollar weakened Tuesday on Fed Chair Janet Yellen's speech to the Economic Club of New York. It was not only dovish, it was full of terms that suggest hesitancy, such as "slower," "weaker" and "cautiously."

"I consider it appropriate for the committee to proceed cautiously in adjusting policy," she said.