Baidu reported mixed results in Q4 with an earnings beat and a slight revenue miss. Shares decline 5% after the news due to revenue guidance for Q1 2017 below consensus. The effects of ad regulation are starting to fade away, and growth will be back on track soon. Baidu (NASDAQ: BIDU ) has recently reported Q4 results, beating earnings estimates but with a slight miss on revenue. Shares fell 5% after the news mainly due to the relatively weak guidance.