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

Shares of CoStar Group Inc. slid 3.8% to $27.02 on what proved to be an all-around grim trading session for the stock market, with the S&P 500 Index falling 0.8% to 7,683.69 and Dow Jones Industrial Average falling 0.7% to 51,481.51.

CoStar Group Inc. closed 68.3% below its 52-week high of $85.24, which the company reached on October 6th.

Trading volume totaled 5.2 million, compared to the 50-day average of 7.1 million.

Data source: Dow Jones Market Data, FactSet