US STOCKS-Tense market falls ahead of Bernanke speech
August 25, 2011 at 16:39 PM EDT
* Dow down 1.5 pct, S&P off 1.6 pct, Nasdaq off 1.95 pct * For up-to-the-minute market news see [STXNEWS/US] (Updates to close, changes comment, byline)
