Bernanke did not announce any new economic stimulus measures during his speech, as some investors had hoped. He left open the possibility of more action if another recession seems likely.
The Dow rose 135, or 1.2 percent, to 11,285. It was up 4.3 percent for the week after being down the past four.
The S&P 500 rose 1.5 percent to 1,177. The Nasdaq rose 2.5 percent to 2,480.
Five stocks rose for every one that fell on the New York Stock Exchange.