Google must hand over its search results and some data to rival companies but will not need to break itself up, a federal judge ruled Tuesday, a decision in a landmark antitrust case that falls short of the sweeping changes proposed by the government to rein in the power of Silicon Valley.

Judge Amit Mehta of the U.S. District Court for the District of Columbia said in a ruling that to resolve Google's monopoly in search, the company must share some of its search data with companies that are "qualified competitors." The Justice Department had asked the judge to force the company to share even more of its data, arguing it was key to Google's dominance.

Mehta also said that Google will be required to refrain from entering into exclusive contracts with device manufacturers surrounding the d

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