TotalMarketCap

Costar Group

CSGPNasdaq United StatesFinanceReal Estate

Market cap

$12.079 B

$29.81 +8.01%

Close of 9 Oct 2026

As of 9 Oct 2026, Costar Group (CSGP) has a market capitalization of $12.1B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$3.25B

#864 by revenue

Earnings

$6.50M

#2123 by earnings

Shares outstanding

405,197,588

Latest filing cover page

P/E ratio

1858.3

Cap ÷ net income

Real Estate, ranked by market cap

All 58 →
  1. #4Invitation HomesINVH$15.6B
  2. #5Jones Lang LasalleJLL$13.9B
  3. #6Costar GroupCSGP$12.1B
  4. #7CompassCOMP$7.21B
  5. #8Terreno RealtyTRNO$7.03B

What if Costar Group were worth as much as…

Open the what-if tool →

Gold $29.1T

$71,722.68

Per share 2,406× higher

Bitcoin $1.66T

$4,098.20

Per share 137× higher

Nvidia $5.55T

$13,708.29

Per share 460× higher

Or at a round number

$20.0B$50.0B$100.0B$200.0B

Where these numbers come from

Share counts and financials for Costar Group are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 10 Oct 2026. Read the methodology.