Friday's roller-coaster rally in banks and other stocks capped a hair- raising week of volatility on Wall Street.

The Standard & Poor's bank index advanced 1.17 to 544.86, while the S&P 500 broad market index rose 3.61 to 887.29. The Dow Jones industrial average of 30 blue chip stocks soared more than 100 points at midday, but ended trading at 7,687.72, up just 33.47.

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