CoStar Group, Inc. (CSGP) Fair Value 2026

CSGP · Real Estate Services ·

By CirclFi Research Team · Data from SEC EDGAR, FRED & GDELT

Quality Score

8.1 /10

32 fundamental signals · 10 models active

Value Trap Risk

WARN (40/100)

Quick Summary — As of 2026-08-28, CoStar Group, Inc. (CSGP) trades at $32.22, versus a $7.98 median fair value across its 10 active models — 75.2% below the current price. QOC: 8.1/10. Value Trap Risk: 40/100 (WARN). 10/13 models active. Within that set, the Bayesian DCF component alone returns $2.27.

Key Facts

Ticker
CSGP
Price
$32.22
Quality Score
8.1/10
Value Trap Risk
40/100
Models Active
10/13
Last Updated
Strength: Quality Score of 8.1/10 indicates strong fundamentals
Risk: Value Trap score of 40 suggests caution despite apparent undervaluation

Is CoStar Group, Inc. (CSGP) Undervalued or Overvalued in 2026?

According to CirclFi’s 10-model valuation engine, CoStar Group, Inc. (CSGP) appears overvalued as of : the median of 10 independent fair value estimates is $7.98, 75.2% below the current price of $32.22. Estimates range from $2.27 to $39.10. CSGP scores 8.1/10 on fundamental quality and 40/100 on value-trap risk.

For context, the median US equity CirclFi rates trades at an implied -23.4% versus its own 13-model consensus, across 3,809 rated companies as of 2026-08-28. CSGP’s -75.2% gap is wider than that market norm, and the Real Estate Services sector median is -6.4%. Full market index →

This verdict compares price to intrinsic value only — it is not a buy or sell rating. For the decision case (bull vs bear arguments, risk factors, peers), read Should You Buy CoStar Group, Inc. Stock in 2026? →

What Fair Value Does Each Model Give CSGP?

10 Intrinsic Value Models vs. Current Price ($32.22)

Core Models (Unlocked)
Model Fair Value Upside
Intrinsic · High Conviction
 $2.27 -93.0%
Intrinsic · High Conviction
 $9.79 -69.6%
Ensemble · Low Conviction
 $7.80 -75.8%
Scenario · High Conviction
 $8.16 -74.7%
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What Is CSGP's Fair Value Range?

Spread across 10 independent models · $2.27 to $39.10

CirclFi's 10 active models place CoStar Group, Inc. (CSGP) between $2.27 and $39.10 per share, a spread of 461% of the median. The median of that range — $7.98 — is the fair value CirclFi publishes for CSGP, against a current price of $32.22.

Low · Bayesian DCFHigh · Regime Cross
$2.27median $7.98$39.10
Where the range comes from
Most bearish modelBayesian DCF$2.27
Most bullish modelRegime Cross-Sectional$39.10
Model agreement1 bullish · 9 bearishwide

A band this wide is itself the finding. When independent methods land far apart, they are reading a business whose value depends heavily on which lens you apply — volatile earnings, heavy reinvestment, or an asset base that cash-flow and asset-based methods score differently. That disagreement is information: it says the choice of method matters more than usual for CSGP. Treat the median as one reading among several and compare the individual models below before acting.

Every figure above is one model's standalone output on CSGP, not a CirclFi price target. How each model works →

What Is CoStar Group, Inc. (CSGP) Worth in 2026?

According to the CirclFi Deep Alpha Valuation Engine, CoStar Group, Inc.'s intrinsic value is estimated at $7.98, suggesting the stock is overvalued at its current price of $32.22. With 9 out of 10 models flagging downside (-75.2% vs price), the market may be pricing in unsustainable growth. Notably, Regime Cross sees the most upside at +21.4% (fair value: $39.10), while Bayesian DCF is the most conservative at -93.0% ($2.27). The spread between these extremes — +114.3% — reveals how different analytical frameworks can reach starkly different conclusions. Among models with highest confidence, Bayesian DCF, EPV lean bearish — adding weight to the bearish side of the thesis.

What Do the Models Say About CSGP?

10 of 13 models are currently active for CSGP. Of these, 1 model suggests upside while 9 models suggest overvaluation. Taken together, their median fair value for CSGP is $7.98 — the figure CirclFi publishes as this stock's fair value. One component of that median, the Bayesian DCF, returns $2.27 on its own, implying -93.0% downside from the current price. See which stocks rank higher →

How Does CSGP Rank in Real Estate Services?

Among 52 Real Estate Services stocks, CSGP ranks #5 by Quality of Company score. CirclFi's QOC score of 8.1/10 evaluates 32 fundamental signals. A score of 8.1 places CSGP in the top tier.

Within the Real Estate Services space, CoStar Group, Inc. competes in an environment where debt-to-EBITDA often separates market leaders from laggards. Understanding these industry-specific dynamics is essential context for interpreting our model outputs.

Is CSGP a Value Trap?

CirclFi's Value Trap algorithm assigns CSGP a score of 40/100 (WARN). This is a warning signal. Additional research into recent 10-Q filings is recommended. The score cross-references apparent undervaluation against fundamental deterioration signals. Browse lowest value-trap stocks →

Multi-Model Methodology

10 of 13 models are active for CoStar Group, Inc.. Broad coverage provides high confidence. Each model applies a fundamentally different valuation philosophy. See the complete methodology →

According to the CirclFi Quality of Company (QOC) framework, which evaluates 32 signals including margin stability, revenue growth trajectory, leverage, and free cash flow generation, CoStar Group, Inc. is rated at 8.1/10. This strong-tier score demonstrates strong fundamentals across the majority of our quality signals.

The gap between the most bullish and bearish model spans +114.3% — demonstrating why single-model analysis is dangerous. Browse all stocks with 13-model coverage →

Data Sources & Confidence

Every CSGP valuation is built from SEC EDGAR XBRL filings — 700+ standardized financial tags. Macroeconomic context from FRED calibrates discount rates, while GDELT news sentiment feeds into our Sentiment SOTP model. All pipelines run daily. Read the complete data methodology →

Across CSGP's 10 active models, average confidence is 50%. Moderate confidence indicates reasonable fit.

CirclFi's output is a research starting point, not a buy/sell signal. All data updates daily. Read the full methodology →

This analysis is produced by the CirclFi Valuation Engine using quantitative models applied to SEC EDGAR filings, public market feeds, and FRED macroeconomic indicators. It is not financial advice.

Read the full investment analysis: Should You Buy CoStar Group, Inc. Stock in 2026? →

Bull case, bear case, risk factors & peer comparison — updated daily

Which Similar Real Estate Services Stocks Should You Also Analyze?

10 related Real Estate Services stocks with 13-model coverage

JLLJones Lang LaSalle IncorporatedQOC 8.3AOXYAdvanced Oxygen Technologies, Inc.QOC 7.8FSVFirstService CorporationQOC 8.4CWKCushman & Wakefield LimitedQOC 7.7IRSIRSA Inversiones y Representaciones Sociedad AnónimaQOC 8.4RMAXRE/MAX Holdings, Inc.QOC 7.7REAXReal REMAX Group Inc.QOC 6.8DUOFangdd Network Group Ltd.QOC 5.8MDRRMedalist Diversified, Inc.QOC 4.6CHCIComstock Holding Companies, Inc.QOC 8.9

Read investment analysis: JLL · AOXY · FSV · CWK · IRS · RMAX · REAX · DUO · MDRR · CHCI

Which Other Stocks Have a Similar Quality Score to CSGP?

7 companies across all industries closest to CSGP’s Quality of Company score of 8.1/10.

GTECGreenland Technologies Holding CorporationQOC 8.1PATKPatrick Industries, Inc.QOC 8.1PRSUPursuit Attractions and Hospitality, Inc.QOC 8.1WNCWabash National CorporationQOC 8.1SMBCSouthern Missouri Bancorp, Inc.QOC 8.1NENoble Corporation plcQOC 8.1NVDANVIDIA CorporationQOC 10.0

Read investment analysis: GTEC · PATK · PRSU · WNC · SMBC · NE · NVDA

What Else Do Investors Ask About CoStar Group, Inc.’s Valuation?

What is CoStar Group, Inc.'s intrinsic value in 2026?

CirclFi puts CoStar Group, Inc. (CSGP)'s intrinsic value at $7.98 — the median of 10 independent model estimates as of 2026-08-28, ranging from $2.27 to $39.10. One component of that median, the Bayesian DCF, runs 10,000 Monte Carlo simulations with jump-diffusion and returns $2.27 on its own. The Quality of Company score is 8.1/10 across 32 fundamental signals. All models use SEC EDGAR filings updated daily. See our methodology page for how each model works.

Is CSGP overvalued or undervalued right now?

At $32.22, 1 of 10 active models suggest CSGP may be undervalued, while 9 indicate potential overvaluation. The median of all 10 fair value estimates is $7.98, 75.2% below the current price of $32.22 — a consensus view that CSGP is overvalued. The assessment depends on which methodology best fits CoStar Group, Inc.'s business model in Real Estate Services.

What does a Quality of Company score of 8.1 mean for CSGP?

CoStar Group, Inc.'s QOC of 8.1/10 reflects 32 fundamental signals: profitability margins, revenue growth consistency, balance sheet leverage, free cash flow generation, and capital allocation efficiency. Scores above 7 indicate strong fundamentals and disciplined management.

How many valuation models does CirclFi run on CSGP?

CirclFi analyzes CSGP with 13 institutional-grade models daily: Bayesian DCF (Monte Carlo + jump-diffusion), EPV (Greenwald zero-growth), EROIC Spread (McKinsey reinvestment), First Chicago (3-scenario), Markov DDM (regime-switching), ML-RIV (machine learning residual income), Dynamic NAV (asset-based), PWERM (option-theoretic), Regime Cross-Sectional (relative), Sentiment SOTP (hybrid), CUCE Ensemble (meta-model), FTNN Topology (neural network), and RCMH-DCF (conditional regime). Currently 10 of 13 are active for this stock. Read the full methodology →

Which valuation models are most bullish and most bearish on CSGP?

Of the 10 models currently active on CSGP, Regime Cross-Sectional is the most bullish at $39.10 per share, and Bayesian DCF is the most bearish at $2.27. CirclFi's published fair value for CSGP is the median of that range, $7.98, not either extreme. The gap between the two ends equals 461% of the median — a wide spread, meaning the methods genuinely disagree and the median should carry less weight. Browse stocks by value-trap risk →

Is CSGP a value trap in 2026?

CoStar Group, Inc.'s Value Trap score is 40/100 (WARN). This elevated score suggests the stock may look undervalued but faces deteriorating fundamentals — declining margins, rising debt, or shrinking revenue could make the apparent discount deceptive. Browse our ranked stock lists to compare value-trap scores across industries.

Cite this analysis — “According to CirclFi’s 10-model valuation engine, CoStar Group, Inc. (CSGP) has a median fair value of $7.98 — 75.2% below the current price of $32.22 — as of 2026-08-28.” Source: circlfi.com/stock/CSGP/ · Methodology
Primary sources for this CSGP valuation
  • Financial statements: CoStar Group, Inc. 10-K and 10-Q filings on SEC EDGAR (CIK 0001057352) — 700+ standardized XBRL tags, published by the U.S. Securities and Exchange Commission.
  • Discount-rate inputs: FRED, Federal Reserve Bank of St. Louis — risk-free rates, VIX, yield curve, inflation.
  • News sentiment: The GDELT Project — global media tone, input to the Sentiment SOTP model.
  • Model definitions: CirclFi methodology — the published specification for all 13 models, including the academic sources each one implements.

Market data for CSGP as of ; valuations recomputed .

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