Google parent Alphabet Inc. said fourth-quarter revenue increased nearly three times as fast as profit, as it cast about for new sources of growth beyond its traditional search advertising.

Fourth-quarter profit grew 8.3% to $5.33 billion, missing Wall Street estimates, while a 22% jump in revenue to $26.1 billion surpassed estimates. Alphabet blamed the earnings miss on a one-time tax adjustment. Its shares fell 2.1% in after-hours trading.

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