Shares of CoStar Group, Inc. (CSGP, Financial), a real estate information and marketing services company, contributed to fourth quarter performance. The company’s financial results beat Street expectations, particularly on margin expansion. Bookings growth was strong, with net annualized subscription bookings more than doubling versus the prior year. We believe CoStar is poised to generate accelerating organic revenue growth and significant margin expansion as it leverages the multifamily marketing investments made over the last 18 months. (Neal Rosenberg)
From Ron Baron (Trades, Portfolio)'s Growth Fund fourth quarter shareholder letter.
