Bank stocks traded in a narrow range of modest gains and losses Wednesday, lifted by news of Berkshire Hathaway Inc.'s plan to invest $5 billion in Goldman Sachs Group Inc. but tempered by uncertainty about the timing of a federal bailout plan for struggling banks.

The KBW Bank Index lost 1.6% Wednesday after posting steeper losses the two previous days. The broader markets followed a similar pattern. The Dow Jones industrial average lost 0.3%, and the Standard & Poor's 500 declined 0.2%.

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