Stock Analysis

Evaluating CoStar Group (CSGP) Valuation Following Standout Earnings and Sustained Double-Digit Growth

CoStar Group (CSGP) just delivered a Q2 earnings performance that immediately captured Wall Street’s attention. Following the release, shares jumped 6.9% as investors digested not only outsized revenue growth but also a 107% surge in adjusted EBITDA versus last year. This marks the company’s 57th straight quarter of double-digit growth, and the market’s reaction reflects how these earnings exceeded even optimistic forecasts. Over the past year, CoStar Group has steadily gained ground. Year-to-date returns are up 22%, and shares are showing fresh momentum after this earnings beat. While performance in the past month and quarter was mixed, with the latest pop following a stretch of muted moves, the bigger narrative highlights consistent long-term value creation and a history of strong financial management. With expectations running high and shares back in the spotlight, the real question is whether CoStar is now a bargain with more upside ahead or if the market is fully pricing in future growth potential.
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Most Popular Narrative: 10.6% Undervalued

According to the most widely followed narrative, CoStar Group shares trade at a discount to their estimated fair value. This suggests material upside based on future growth expectations and profitability improvements.

The integration of AI-driven features, Matterport's 3D technology, and advanced analytics across platforms is increasing user engagement. This enables higher-value product offerings and upsells and improves client retention, which positions the company for elevated margins and increased net income over time.

Curious how cutting-edge technology and ambitious market expansion combine to back up a double-digit growth forecast? Some of the numbers underlying this bullish projection would surprise even seasoned real estate investors. See how much of CoStar's future value hinges on a bold call about profit margins and revenue scale.

Result: Fair Value of $97.13 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, as CoStar ramps up investments in residential real estate, rising costs or slower than expected adoption could pressure margins and test bullish forecasts.

Find out about the key risks to this CoStar Group narrative.

Another View: What Multiples Tell Us

While the growth narrative paints an undervalued picture, a look through the lens of the price-to-sales ratio gives a different impression. By this method, CoStar appears far pricier than other real estate stocks. This raises the question: is growth alone enough to justify the premium?

See what the numbers say about this price — find out in our valuation breakdown.
NasdaqGS:CSGP PS Ratio as at Sep 2025
NasdaqGS:CSGP PS Ratio as at Sep 2025
Stay updated when valuation signals shift by adding CoStar Group to your watchlist or portfolio. Alternatively, explore our screener to discover other companies that fit your criteria.

Build Your Own CoStar Group Narrative

If you see things differently, or want to dive into the numbers on your own, you can craft your own narrative in just a few minutes. Do it your way

A great starting point for your CoStar Group research is our analysis highlighting 2 key rewards and 2 important warning signs that could impact your investment decision.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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About NasdaqGS:CSGP

CoStar Group

Provides information, analytics, and online marketplace services in the United States, Canada, Europe, the Asia Pacific, and Latin America.

Flawless balance sheet with reasonable growth potential.

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