U.S. stocks close mostly lower but Nasdaq bucks trend

The S&P 500 and the Dow closed lower for a second session in a row Wednesday as weak oil prices weighed on the market, but the Nasdaq bucked the trend to rise as large-cap tech stocks gained. Oil prices extended losses to fall deeper into bear territory with August West Texas Intermediate crude down 2.5% to $42.42 a barrel. The S&P 500 shed 1 point to close at 2,435 and the Dow Jones Industrial Average fell 55 points, or 0.3%, to end at 21,411. The Nasdaq Composite Index rose 45 points, or 0.7%, to close at 6,233.

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