This article was automatically generated by Dow Jones using technology from Automated Insights.

Shares of CoStar Group Inc. slid 4.4% to $32.26 on what proved to be an all-around grim trading session for the stock market, with the S&P 500 Index falling 0.9% to 7,641.16 and Dow Jones Industrial Average falling 1.3% to 52,759.21.

The stock's fall snapped a two-day winning streak.

CoStar Group Inc. closed 64.9% short of its 52-week high of $91.89, which the company achieved on September 5th.

Trading volume totaled 6.6 million, compared to the 50-day average of 7.2 million.

Data source: Dow Jones Market Data, FactSet