NEW YORK (MarketWatch) -- U.S. stocks fell Wednesday as companies from MasterCard Inc. to Merck & Co. reported quarterly results short on revenue and as data missed the mark on private-sector job growth in April. "Earnings have actually looked good, but revenue has certainly been light this quarter," said Bill Stone, chief investment strategist at PNC Wealth Management in Philadelphia. The Dow Jones Industrial Average declined 56.98 points to 14,782.62. The S&P 500 index shed 5.3 points to 1,592.27. The Nasdaq Composite dropped 3.49 points to 3,325.30.
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