William Blair Investment Management LLC Sells 613,118 Shares of CoStar Group, Inc. (NASDAQ:CSGP)Ticker Report • about 1 month agoWilliam Blair Investment Management LLC trimmed its position in shares of CoStar Group, Inc. (NASDAQ:CSGP Free Report) by 19.7% in the first quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission (SEC). The firm owned 2,495,388 shares of the ...