CoStar Group has grown revenue 14% a year over three years and 14% a year over five, with earnings per share compounding at −72%. Revenue growth, 3-year annual rate: +14% (Real Estate Services median +6.7%). Revenue growth, 5-year rate: +14%, growth has slowed since the five-year average. Earnings per share, 3-year rate: −72%, earnings lagged revenue: the growth is costing something. Years of annual history on file: 17, FY2009 to FY2025, as filed.

CSGPCoStar Group

Real Estate

$29.68-67% 1Y

$29.68

$26.9552 weeks$87.10

Is it growing?

Mixed

Neither accelerating nor breaking down: revenue growing +22% year on year and operating margin widening (+2.0 points), but earnings down −24% year on year.

2 good, 1 to watch

Revenue trend+22% in a year

Trailing-twelve-month revenue vs a year earlier, from the company's own filings. Five-year pace: +14% a year.

Earnings trend−24% in a year

Trailing-twelve-month earnings per share against a year earlier. Growing slower than revenue, so the growth is costing something.

Margin direction+2.0 points operating

Trailing-twelve-month operating margin, 2.0% now against -0.1% a year earlier.

All from SEC EDGAR, as of Jun 30, 2026.

Where this answer is blind. These are trailing numbers from the filings, not forecasts: an acquisition or a one-off year can flatter them, so check the quarters.

Is CSGP growing?

CoStar Group has grown revenue 14% a year over three years and 14% a year over five, with earnings per share compounding at −72%.

+14%

Revenue growth, 3-year annual rate · Real Estate Services median +6.7% · steady growth, ahead of inflation · compounded from fiscal-year columns as filed

Revenue growth, 5-year rate: +14%
Revenue growth, 5-year rate · +14% over three · growth has slowed since the five-year average
Earnings per share, 3-year rate: −72%
Earnings per share, 3-year rate · revenue +14% · earnings lagged revenue: the growth is costing something
Years of annual history on file: 17
Years of annual history on file · FY2009 to FY2025, as filed