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CoStar Group, Inc. (CSGP) stock analysis

CSGPNasdaqServices-Business Services, NECFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 28, 2026Score 14/3010% below fair value
$30.27−0.06 (-0.21%)

Close on Nov 11, 2026Market cap $12.18BP/E 68.8Yield –

StockData Score

Prices as of Nov 11, 2026How the score works

Value4Growth3Performance1Health6Dividend0

Mixed14 of 30 checks passed

CoStar passes 14 of the 30 checks behind our score; 5 could not be run for lack of data and count as not passed. Each dot in the shape is one check — hover it for the numbers.

Valuation
4/6
Growth
3/6
Past performance
1/6
Financial health
6/6
Dividend
0/6

What stands out

  • Trading below fair value

    The share price of $30.27 is below our fair value estimate of $33.81.

  • Low debt

    Debt is 12.5% of shareholders' equity, under the 40% we consider low.

  • Revenue growing 10%+ a year

    Revenue grew 14.2% a year over the last three fiscal years.

  • Earnings growth accelerating

    Net income grew 791% over the last twelve months, against a 5-year average of -50.1% a year.

What to watch

  • Margin of safety under 20%

    The price is 10.5% below fair value, less than the 20% cushion we look for.

  • Return on equity under 15%

    Return on equity was 2.2% over the last twelve months and averaged 3.7% over five years; we look for 15% on both.

  • Return on capital under 10%

    Return on invested capital was 2.0%, below the 10% that usually covers the cost of capital.

  • Earnings shrank over 5 years

    Net income shrank 50.1% a year on average over the last five fiscal years.

Valuation4/6
  • P/E below its 5-year median

    CoStar's P/E of 68.8 is below its own 5-year median of 101.0.

  • P/E above the industry

    CoStar's P/E of 68.8 is above the Miscellaneous Business Services median of 25.8.

  • EV/EBITDA below its 5-year median

    CoStar's EV/EBITDA of 22.7 is below its 5-year median of 62.7.

  • P/B below the industry

    CoStar's price-to-book of 1.53 is below the Miscellaneous Business Services median of 2.48.

  • Trading below fair value

    The share price of $30.27 is below our fair value estimate of $33.81.

  • Margin of safety under 20%

    The price is 10.5% below fair value, less than the 20% cushion we look for.

Growth3/6
  • Revenue growing 10%+ a year

    Revenue grew 14.2% a year over the last three fiscal years.

  • EPS growing under 10% a year

    Diluted EPS grew -72.2% a year over the last three fiscal years.

  • Earnings growth accelerating

    Net income grew 791% over the last twelve months, against a 5-year average of -50.1% a year.

  • Growing faster than the industry

    Revenue grew 20.2% over the last twelve months; the Miscellaneous Business Services median is 9.9%.

  • Guidance lowered

    CoStar lowered its 2026 revenue outlook on Jul 28, 2026.

  • Gross margin slipping

    Gross margin was 78.3% over the last twelve months, against 79.3% a year earlier.

Past performance1/6
  • Return on equity under 15%

    Return on equity was 2.2% over the last twelve months and averaged 3.7% over five years; we look for 15% on both.

  • Return on capital under 10%

    Return on invested capital was 2.0%, below the 10% that usually covers the cost of capital.

  • Return on equity below the industry

    CoStar's return on equity of 2.2% is below the Miscellaneous Business Services median of 6.8%.

  • Earnings shrank over 5 years

    Net income shrank 50.1% a year on average over the last five fiscal years.

  • Net margin below its 5-year average

    Net margin was 4.9% over the last twelve months, against a 5-year average of 10.5%.

  • Net margin above the industry

    CoStar's net margin of 4.9% is above the Miscellaneous Business Services median of 3.8%.

Financial health6/6
  • Low debt

    Debt is 12.5% of shareholders' equity, under the 40% we consider low.

  • Debt falling against equity

    Debt to equity fell from 18.4% five years ago to 12.5%.

  • Debt covered by cash flow

    Operating cash flow over the last twelve months equals 62.1% of total debt.

  • Interest well covered

    Operating income covers interest expense 7.3 times.

  • Short-term assets cover short-term debts

    Current assets are 1.32 times current liabilities.

  • Low bankruptcy risk

    The Altman Z-score is 3.67; above 3 is the safe zone and below 1.8 the distress zone.

Dividend0/6
  • No dividend

    CoStar has not paid a dividend in the last twelve months.

  • Yield against Treasuries

    No dividend.

  • Yield against the market

    No dividend.

  • Dividend stability

    No dividend.

  • Earnings cover

    No dividend.

  • Cash-flow cover

    No dividend.

Scores of similar companies

Our estimate per share

$33.81

The share price is 10% below this estimate.

20%+ below
Near fair value
20%+ above
$30.27Price
MethodMultiple usedOwn 5Y medianIndustry medianValue per shareWeight
P/E45.0×101.0×25.8×$19.8047%
EV/EBITDA30.0×62.7×15.7×$40.3841%
P/B3.4×4.3×2.5×$66.8712%
Earnings powerleft out, too far from the others10.1% cost of equity––$6.53–
Fair value$33.81100%

Valuation over time

Using the earnings and balance sheet published at each date, not today's.

  • P/E at month end
  • Own 5-year median 101
  • Miscellaneous Business Services median 25.8

An estimate from reported numbers and market multiples, not a price target or investment advice. It can be far off for companies whose profits are about to change sharply.

Market risk

From the past year of daily prices.

Liquidity

Low risk

Average value traded per day
$184.81M
Value traded per 1% price move
$74.74M

Downside

High risk

Typical loss in a bad month
28.0%
Volatility (annualized)
49%
Sharpe ratio, 1 year
-1.21
Beta to the S&P 500 (5Y)
1.04

Typical bad-month loss, week by week

25%: high

Margins

Share of revenue, fiscal years 2011 to 2025

Gross margin

78.9%−2.5 pts over 5 years

Operating margin

-2.2%−19.6 pts over 5 years

Net margin

0.2%−13.5 pts over 5 years

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