Shares of Sogou (NYSE: SOGO) plunged 19.4% lower in July of 2018, according to data from S&P Global Market Intelligence. The Chinese online search specialist was doing alright until the very end of the month, where a mixed earnings report sent share prices tumbling.In a second-quarter report that CEO Xiaochuan Wang characterized as "solid," Sogou beat Wall Street's bottom-line targets but fell short of analysts' revenue estimates.