What happened Shares of CoStar Group (NASDAQ: CSGP) climbed 17.1% last month, according to data provided by S&P Global Market Intelligence, after the real estate information provider delivered a strong fourth-quarter report and issued upbeat guidance for the year ahead. So what CoStar Group's fourth-quarter revenue jumped 24% to $316 million. Profit growth was even more impressive: Net income surged 89% to $84 million, while adjusted net income soared 126% to $102 million. CoStar is enjoying solid growth across all of its major business segments. Its CoStar Suite information product saw revenue rise 16% to $142 million. Meanwhile, sales in its multifamily marketplace business leapt 44% to $109 million, driven by the strong growth of Apartments.com. Additionally, CEO Andrew Florance said during a conference call with analysts that the company believes it can more than triple revenue at its LoopNet commercial real estate marketplace in the coming years. Image source: Getty Images. Now what CoStar Group expects companywide revenue to rise another 15% to approximately $1.38 billion in 2019. Management is also guiding for adjusted earnings to increase by as much as 21% to $10 per share. Looking even further ahead, Florance said that CoStar Group is targeting a $3 billion revenue run rate by the end of 2023. That would represent a near-tripling of the $1.2 billion in revenue the company generated in 2018. All told, CoStar Group's shares are now up almost 35% so far in 2019, but if Florance and his team can deliver on their aggressive growth targets, more gains could still lie ahead for investors. 10 stocks we like better than CoStar GroupWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has quadrupled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and CoStar Group wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of March 1, 2019Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool recommends CoStar Group. The Motley Fool has a disclosure policy.