Capping a mixed week, bank technology stocks ended a volatile day in the market with a rally late Friday.

The Dow Jones industrial average dropped 82 points for the week to close at 7,756.29. The technology-heavy Nasdaq Composite closed at 1,524.7, down 11.9 points. Goldman, Sachs & Co.'s index, which lists many bank technology companies, was unchanged at 138.75 points.

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