The technology sector led the declines Friday after disappointing results from Google, Microsoft and the chip maker Advanced Micro Devices.
The Dow Jones industrial average fell 33 points, or 0.2 percent, to 15,515 as of midday Eastern Daylight Time.
The Standard & Poor's 500 fell a point to 1,687.
The technology-heavy Nasdaq composite slid 30 points, or 0.8 percent, to 3,581.
The Dow and S&P 500 pulled back from all-time highs they reached Thursday.
Microsoft plunged 11 percent to $31.50 after the company wrote off $900 million in expected losses on its Surface tablet and reported declining revenue for its Windows operating system.
General Electric rose 5 percent to $24.75 after reporting higher income.
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