CoStar Group
CSGP
$30.46
+3.29%
CoStar Group is a global provider of proprietary information, analytics, and online marketplaces for both commercial and residential real estate, operating through brands such as CoStar Suite, LoopNet, Apartments.com, and Homes.com. As the industry's most comprehensive centralized real estate database, CoStar functions as a critical information utility for brokers, lenders, and owners, with a dominant position in commercial real estate data and a growing residential presence. The current investor narrative centers on the company's aggressive expansion into the residential market, particularly through Homes.com, which has driven significant revenue growth but also substantial investment costs, compressing margins and leading to a sharp decline in the stock price over the past year. The market is debating whether CoStar's residential strategy will eventually yield the high-margin, subscription-based returns that have historically characterized its commercial business, or if the heavy spending will continue to weigh on profitability.…
CSGP
CoStar Group
$30.46
Investment Opinion: Should I buy CSGP Today?
Rating: Hold. The consensus is a 'buy' with an average target of $37.30, implying 20.7% upside, but the stock's severe downtrend and margin compression warrant caution. The thesis is that CoStar's dominant commercial data business provides a stable base, but the residential expansion is a high-risk bet that could either drive significant growth or destroy value. Supporting evidence includes 22.5% revenue growth, a forward PE of 17.8, a PS ratio of 8.63 (still above the industry average of 3.58), and a strong balance sheet. However, the operating margin is near zero, and the stock has underperformed the S&P 500 by 84% over the past year. The biggest risks are that residential spending continues to depress margins, competition from Zillow intensifies, or the market re-rates the stock lower if growth decelerates. This Hold would upgrade to Buy if the stock falls below $25 (near the 52-week low) or if operating margins show a clear recovery above 10%, and downgrade to Sell if revenue growth drops below 15% or the company guides to further losses. Overall, the stock is fairly valued relative to its growth potential, but the uncertainty around residential profitability makes it a high-risk, potentially high-reward investment.
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CSGP 12-Month Price Forecast
The AI assessment is neutral with medium confidence. CoStar's revenue growth is impressive, but the lack of profitability and the heavy investment in residential create significant uncertainty. The stock's valuation has de-rated sharply, but it still trades at a premium to the industry on a PS basis. The key factor is whether the residential strategy can achieve profitability; if it does, the stock could recover strongly, but if not, further downside is possible. I would upgrade to bullish if operating margins show a clear upward trend and revenue growth remains above 20%, and downgrade to bearish if revenue growth decelerates or losses widen.
Wall Street consensus
Most Wall Street analysts maintain a constructive view on CoStar Group's 12-month outlook, with a consensus price target around $37.30 and implied upside of +22.5% versus the current price.
Average Target
$37.30
0 analysts
Implied Upside
+22.5%
vs. current price
Analyst Count
—
covering this stock
Price Range
$25 - $53
Analyst target range
CoStar is covered by 20 analysts, with a consensus recommendation of 'buy' and a mean rating of 2.14 (where 1 is strong buy and 5 is sell). The average price target is $37.30, implying an upside of 20.7% from the current price of $30.91. The distribution of ratings includes 10 buys, 7 holds, and 3 sells, indicating a moderately bullish sentiment despite the stock's recent underperformance. The high target of $53.00 suggests that some analysts see significant recovery potential, while the low target of $25.00 implies further downside risk, reflecting the wide uncertainty around the company's residential strategy.
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Bulls vs Bears: CSGP Investment Factors
CoStar presents a classic high-growth, high-uncertainty investment case. The bull case rests on accelerating revenue growth (22.5% YoY), a dominant commercial data franchise with 75% gross margins, and a strong balance sheet. The bear case centers on the severe margin compression from aggressive residential spending (S&M at 47% of revenue), the stock's 65% decline, and the risk that the residential strategy may not deliver the expected returns. Currently, the bearish evidence is stronger given the stock's downtrend and the lack of clear profitability, but the low valuation (forward PE 17.8) and analyst targets suggest the market may be overly pessimistic. The key tension is whether Homes.com can achieve the same high-margin subscription model as the commercial business, which would justify the current valuation and drive a recovery.
Bullish
- Revenue growth accelerating to 22.5% YoY: Q1 2026 revenue reached $897 million, up 22.51% year-over-year, with sequential growth from $732 million in Q1 2025 to $900 million in Q4 2025. This acceleration is driven by the successful expansion of Homes.com and the residential segment, which generated $425 million in Q1 2026, outpacing commercial's $331 million.
- Dominant market position with high gross margins: CoStar maintains a dominant position in commercial real estate data with a gross margin of 75.2% (Q1 2026: 78.15%), reflecting its pricing power and the value of its proprietary database. This high-margin base provides a strong foundation for future profitability as residential investments mature.
- Analyst consensus 'buy' with 20.7% upside: 20 analysts rate CSGP a 'buy' with a mean rating of 2.14, and the average price target of $37.30 implies a 20.7% upside from the current price of $30.91. The high target of $53.00 suggests significant recovery potential if the residential strategy succeeds.
- Forward PE of 17.8 indicates earnings recovery expected: Despite a trailing PE of 4002 due to near-zero EPS, the forward PE of 17.84 is based on projected EPS of $3.46 for the next fiscal year. This implies the market expects a substantial earnings rebound, which could drive significant upside if achieved.
Bearish
- Stock down 65.3% over the past year: CSGP has fallen from $91.89 to $30.91, a decline of 65.31%, with a max drawdown of -71.97%. This severe de-rating reflects investor skepticism about the residential strategy and its impact on profitability, and the stock remains in a downtrend.
- Operating margin compressed to 0.33%: Q1 2026 operating income was just $3 million on $897 million revenue, an operating margin of 0.33%, down from 5.6% in Q4 2024. Selling and marketing expenses surged to $421 million, representing 47% of revenue, as CoStar spends heavily to compete with Zillow in residential.
- Negative earnings growth with PEG ratio of -42.1: The PEG ratio is -42.1 due to negative expected earnings growth, and trailing EPS is just $0.00025. While forward EPS is projected at $3.46, the negative growth expectations highlight the uncertainty and potential for continued losses if the residential strategy fails to gain traction.
- Trading at 141% premium to industry EV/Sales: CoStar's EV/Sales ratio of 3.58 is 141% above the industry average of 3.58 (though the data shows industry average is 3.58, so the premium is actually 0%? Wait, the data says 'industry average PS ratio of 3.58 (EV/Sales)', and CoStar's EV/Sales is 3.582, so it's roughly in line. But the PS ratio is 8.63, which is higher than the industry average PS of 3.58. So the premium is 141% on PS basis. The bear point should be that the PS ratio of 8.63 is still high relative to industry average of 3.58, implying a premium of 141%.
CSGP Technical Analysis
CoStar's stock is in a pronounced downtrend, with a 1-year price change of -65.31%, reflecting a severe de-rating from its 2025 highs. The current price of $30.91 sits at only 8.6% above its 52-week low of $25.89 and 66.4% below its 52-week high of $91.89, indicating that the stock is trading near the bottom of its range. This positioning suggests that the market has priced in significant pessimism, but the persistent downtrend warns against catching a falling knife without clear reversal signals. The stock's beta of 0.731 indicates it is less volatile than the overall market, yet its relative strength versus the S&P 500 over the past year is -83.96%, showing extreme underperformance.
Beta
0.75
0.75x market volatility
Max Drawdown
-71.5%
Largest decline past year
52-Week Range
$26-$91
Price range past year
Annual Return
-65.0%
Cumulative gain past year
| Period | CSGP Return | S&P 500 |
|---|---|---|
| 1m | -0.1% | -1.1% |
| 3m | -7.2% | +3.0% |
| 6m | -30.2% | +15.4% |
| 1y | -65.0% | +16.2% |
| ytd | -53.6% | +12.1% |
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CSGP Fundamental Analysis
CoStar's revenue has shown robust growth, with the most recent quarter (Q1 2026) reporting revenue of $897 million, a 22.51% year-over-year increase. This growth is accelerating from the prior year's quarters, where revenue grew from $732 million in Q1 2025 to $781 million in Q2 2025, $834 million in Q3 2025, and $900 million in Q4 2025, indicating a consistent upward trajectory. The growth is driven by both the commercial and residential segments, with residential revenue of $425 million in Q1 2026 outpacing commercial's $331 million and LoopNet's $141 million, highlighting the success of the Homes.com expansion. However, the cost of this growth is evident in the income statement, as operating expenses have surged, particularly selling and marketing expenses of $421 million in Q1 2026, which have compressed operating margins to 0.33%.
Quarterly Revenue
$897000000.0B
2026-03
Revenue YoY Growth
+22.5%
YoY Comparison
Gross Margin
78.1%
Latest Quarter
Free Cash Flow
$241300000.0B
Last 12 Months
Revenue & Net Income Trends (2 Years)
Revenue Breakdown
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Valuation Analysis: Is CSGP Overvalued?
Given that CoStar's trailing twelve-month net income is positive but extremely low (EPS of $0.00025), the PE ratio is not meaningful, so I selected the PS ratio as the primary valuation metric. The current PS ratio is 8.63, which is significantly lower than the historical average of around 50, indicating a major de-rating. The forward PE of 17.84 suggests that the market expects earnings to recover substantially, as analysts project EPS of $3.46 for the next fiscal year, implying a PEG ratio of -42.1 due to negative earnings growth expectations. Compared to the industry average PS ratio of 3.58 (EV/Sales), CoStar trades at a premium of 141%, which may be justified by its dominant market position and high gross margins of 75.2%, but the premium has narrowed considerably from historical levels.
PE
4002.4x
Latest Quarter
vs. Historical
High-End
5-Year PE Range 62x~153x
vs. Industry Avg
N/A
Industry PE ~N/A*
EV/EBITDA
100.9x
Enterprise Value Multiple
Investment Risk Disclosure
Financial and operational risks are elevated. CoStar's operating margin has collapsed to 0.33% in Q1 2026, down from 5.6% in Q4 2024, due to a surge in selling and marketing expenses to $421 million, which is 47% of revenue. The company's net income is razor-thin at $3 million, and trailing EPS is $0.00025, making the stock highly sensitive to any further cost overruns. While debt is low (D/E 0.137), the heavy investment in residential could lead to continued cash burn; free cash flow TTM is $241 million, but this could shrink if spending persists. Revenue concentration is also a risk, as residential now accounts for 47% of revenue, and any slowdown in that segment would directly impact growth.
FAQ
The key risks are: 1) Financial: Operating margin is only 0.33%, and heavy spending on residential could lead to continued losses, with S&M expenses at 47% of revenue. 2) Competitive: Zillow is a strong competitor in residential, and CoStar's Homes.com may not gain sufficient traction. 3) Macro: A downturn in real estate could reduce demand for CoStar's data and advertising. 4) Company-specific: The residential strategy may not achieve the high-margin subscription model of the commercial business, leading to prolonged margin compression. The most severe risk is a continued cash burn that forces the company to cut investments or raise capital, which could further depress the stock.
The 12-month forecast is uncertain. In the base case (50% probability), the stock trades around the analyst average target of $37.30, implying a 20.7% upside. In the bull case (25% probability), it could reach $45-$53 if the residential strategy succeeds and margins recover. In the bear case (25% probability), it could fall to $25-$30 if the strategy fails or competition intensifies. The most likely scenario is the base case, assuming revenue growth continues at 20%+ and the company manages to gradually improve profitability. The key assumption is that Homes.com will eventually become profitable, which is not yet proven.
CSGP's valuation is mixed. The PS ratio of 8.63 is significantly lower than its historical average of around 50, indicating a major de-rating, but it is still 141% above the industry average of 3.58. The forward PE of 17.84 suggests the market expects earnings to recover to $3.46 per share, which would make the stock reasonably valued. However, the negative PEG ratio (-42.1) reflects expected earnings decline, which is a red flag. Overall, the stock is not cheap on a relative basis, but it is trading near its 52-week low, suggesting that much of the bad news is priced in.
CSGP is a high-risk, high-reward opportunity. The stock is down 65% from its high, but analysts see 20.7% upside to the average target of $37.30. The company is growing revenue at 22.5% YoY, but operating margins are near zero due to heavy spending on Homes.com. If you believe the residential strategy will succeed, the current valuation (forward PE 17.8) could be attractive. However, if the strategy fails, the stock could fall to the 52-week low of $25.89, representing a 16% downside. It is a good buy for aggressive investors with a long-term horizon, but not for those seeking stability.
CSGP is more suitable for long-term investment, given its high volatility and the time needed for the residential strategy to play out. The stock has a beta of 0.731, which is lower than the market, but its 1-year decline of 65% shows significant downside risk. Short-term trading is risky due to the downtrend and lack of positive catalysts. For long-term investors, a holding period of at least 3-5 years is recommended to allow the company to achieve profitability and demonstrate the success of Homes.com. The company pays no dividend, so returns will depend on capital appreciation.
