CoStar Group (FRA:RLG) Quality Rank

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

FRA:RLG CoStar Group Inc FRA:RLG
70 GF Score
Price €25.60
GF Value €88.63
Valuation Significantly Undervalued
! 1 Warning Sign
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What is CoStar Group Quality Rank?

The Quality Rank measures the business quality of a company relative to other companies. It is ranked based on the strength of the balance sheet, as well as the profitability and growth of the business. The ranked companies are split in equal numbers and then ranked from 1 to 10, with 10 being the highest.

The rank of balance sheet (30%)

The rank of balance sheet is done through the ranking of:
  • Interest coverage
  • Zscore
  • Debt to revenue
  • Equity to asset
  • Cash to debt

The rank of Profitability (70%)

The ranking of Profitability is done by ranking:
  • Operating margin mean rank (10-year mean average profit margine)
  • Operating margin growth rank
  • Fscore
  • Predictability rank
  • Revenue growth rank (5 year), when the growth is higher than 25%, set it as 25%
  • Num of year profit (number of years that is profitable within the last 10 years)
  • ROIC median (10-year median of ROIC)

CoStar Group Quality Rank Related Terms

FRA:RLG
70GF Score
CoStar Group Inc FRA:RLG
Quality Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Is CoStar Group (FRA:RLG) Overvalued in 2026?

Based on GuruFocus' analysis, CoStar Group stock appears to be undervalued. The current stock price of €25.60 is trading 71.1% below its estimated GF Value™ of €88.63. GuruFocus considers CoStar Group to be Significantly Undervalued.

Key valuation signals for FRA:RLG:

  • Quality Rank:
  • GF Value™: €88.63 vs. price of €25.60 (71.1% below fair value)
  • GF Score™: 70/100 with 1 warning sign

No single metric tells the full story. See the FRA:RLG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

CoStar Group Business Description

Address 1201 Wilson Boulevard, Arlington, VA, USA, 22209
CoStar Group is a global provider of proprietary information, analytics, and online marketplaces serving both commercial and residential real estate. The firm operates through a diverse portfolio of brands, including CoStar Suite for commercial real estate research, LoopNet for commercial listings, Apartments.com for multifamily rentals, and Homes.com for residential brokerage. It primarily sells high-margin software-as-a-service subscriptions that provide institutional clients with forensic property data and premium advertising visibility. With operations across North America, Europe, and Asia-Pacific, CoStar maintains the industry's most comprehensive centralized real estate database, functioning as a critical information utility for brokers, lenders, and owners worldwide.
70GF Score

Get the complete analysis for FRA:RLG

Quality Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€25.60
Price
€88.63
GF Value