CoStar Group Inc. Stock Slides 14.0%, Underperforms Market

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

Shares of CoStar Group Inc. plunged 14.0% to $27.54 on what proved to be an all-around positive trading session for the stock market, with the S&P 500 Index rising 0.3% to 7,743.98 and the Dow Jones Industrial Average rising 0.2% to 52,475.10.

This was the stock's fourth consecutive day of losses.

CoStar Group Inc. closed 65.1% short of its 52-week high of $78.95, which the company achieved on October 28th.

Trading volume totaled 18.3 million, compared to the 50-day average of 6.3 million.

Data source: Dow Jones Market Data, FactSet

(END) Dow Jones Newswires

October 28, 2026 16:33 ET (20:33 GMT)