CoStar GroupMIL:1CSGP 56 9-Day RSI is 19.80 as of Jun. 30, 2026. GuruFocus rates MIL:1CSGP with a GF Score™ of 56/100 and a GF Value™ of €93.61 (Significantly Undervalued). The stock has 1 warning sign investors should review. Among 1,890 Real Estate companies, CoStar Group ranks better than 71.11% on this metric.
The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100. Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
As of today (2026-06-30), CoStar Group's 9-Day RSI is 19.80.
The industry rank for CoStar Group's 9-Day RSI or its related term are showing as below:
MIL:1CSGP's 9-Day RSI is ranked better than 71.11% of 1890
companies
in the Real Estate industry
Industry Median: 45.13
vs MIL:1CSGP: 19.80
CoStar Group (MIL:1CSGP) 9-Day RSI Explanation
The Relative Strength Index (RSI), developed by J. Welles Wilder in his book “New Concepts in Technical Trading Systems.”, is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100.
Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A RSI surpasses the 30 level indicates a bullish sign, when it slides below 70 level, it’s a bearish sign. This level can be adjusted depending on the security’s pattern and the market’s underlying trend. In an uptrend or bullish market, the RSI might range within a higher interval, investors could set the support level higher. If a downtrend or bearish market occurs, investors may need to lower the resistance level.
RSI can also be used in trading techniques to indicate the trading signal, such as Divergences and Swing Rejections. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
CoStar Group 9-Day RSI Related Terms
MIL:1CSGP vs JLL, BEKE, COMP: 9-Day RSI Comparison
For the Real Estate Services subindustry, CoStar Group's 9-Day RSI, along with its competitors' market caps and 9-Day RSI data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
CoStar Group 9-Day RSI vs Real Estate Industry
For the Real Estate industry and Real Estate sector, CoStar Group's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where CoStar Group's 9-Day RSI falls into.
* Note that the formula uses a positive value for the average loss.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
CoStar Group (MIL:1CSGP) has a 9-Day RSI of 19.80 as of Jun. 30, 2026. According to the industry distribution chart, CoStar Group ranks #546 out of 1890 companies in the Real Estate industry, placing it in the top 28.9%.
Is CoStar Group's 9-Day RSI too high?
CoStar Group's current 9-Day RSI is 19.80. The Real Estate industry median 9-Day RSI is 45.13. CoStar Group's value of 19.80 is 56.1% below this industry median. Based on the distribution chart, CoStar Group ranks #546 out of 1890 companies in the Real Estate industry, which is above the industry midpoint. Overall, CoStar Group has a GF Score™ of 56/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CoStar Group's 9-Day RSI compare to JLL and BEKE?
According to the Real Estate industry distribution chart, CoStar Group ranks #546 out of 1890 companies for 9-Day RSI. This puts CoStar Group in the upper half of its industry. The industry median 9-Day RSI is 45.13. CoStar Group's value of 19.80 is 56.1% below this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 9-Day RSI for a Real Estate company?
The median 9-Day RSI among Real Estate companies is 45.13, based on 1,890 companies in the industry. Companies in the top quartile (top 25%) have a 9-Day RSI significantly above this median, while those in the bottom quartile fall well below. However, 9-Day RSI should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. CoStar Group's current 9-Day RSI of 19.80 is 56.1% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 9-Day RSI mean?
A high 9-Day RSI can signal that a stock is expensive relative to its fundamentals. For the Real Estate industry, the median 9-Day RSI is 45.13 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CoStar Group's current 9-Day RSI is 19.80. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CoStar Group stock overvalued right now?
Based on GuruFocus' analysis, CoStar Group (MIL:1CSGP) is currently considered Significantly Undervalued. The stock's GF Value™ is €93.61, compared to a current price of €26.90 — trading 71.3% below its estimated fair value. The current 9-Day RSI is 19.80 and 56.1% below the Real Estate industry median of 45.13. CoStar Group's overall GF Score™ is 56/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 9-Day RSI calculated?
9-Day RSI is calculated from a company's financial statements. For CoStar Group (MIL:1CSGP), the current 9-Day RSI is 19.80 as of Jun. 30, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is CoStar Group (MIL:1CSGP) Overvalued in 2026?
Based on GuruFocus' analysis, CoStar Group stock appears to be undervalued.
The current stock price of €26.90 is trading 71.3% below its estimated GF Value™ of €93.61.
GuruFocus considers CoStar Group to be Significantly Undervalued.
Key valuation signals for MIL:1CSGP:
9-Day RSI: 19.80
GF Value™: €93.61 vs. price of €26.90 (71.3% below fair value)
Industry Position: 56.1% below the Real Estate median (#546 of 1890)
No single metric tells the full story. See the MIL:1CSGP stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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.
56GF Score
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