Castelnau Group (LSE:CGL) GF Value Rank: 0 (As of Jul. 17, 2026)

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.

LSE:CGL Castelnau Group Ltd LSE:CGL
35 GF Score
Price £0.89
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What is Castelnau Group GF Value Rank?

Castelnau Group has the GF Value Rank of 0.

GF Value Rank evaluates the exclusive GuruFocus valuation and performance of a stock, rated on a scale from 1 to 10. It is determined by the price-to-GF-Value (P/GF Value) ratio, a proprietary metric calculated based on historical multiples along with an adjustment factor based on a company's past returns and growth and future estimates of the business' performance.

GuruFocus found that for valuation, we cannot simply give stocks a better GF Value rank simply because they have a lower P/GF Value ratio. Backtesting shows that over the long term, the two worst-performing groups are the most expensive group (with the highest P/GF Value ratio) and the least expensive group (with the lowest P/GF Value ratio).

We can understand why the most expensive group underperforms. We were initially puzzled by the underperformance of the least expensive group, but we realized there is a reason why some stocks are super cheap. If they look too undervalued, it is often because the businesses behind them are poor quality. The market realized this and gave them low valuations. In a way, the market is efficient.

After multiple backtesting analyses, we granted the stocks in third-cheapest percentile the highest GF Value rank, as they have performed the best over a full market cycle. Stock performance is actually not as sensitive to valuation as it is to growth and profitability. On average, the companies in the 20%-50% valuation groups have similar performances. Therefore, we should avoid the most expensive and the least expensive stocks. We can be more tolerant of valuation.

A higher score indicates a stock with a relatively low valuation and substantial potential for outperformance. Conversely, a lower score often reflects stocks that are either highly overvalued or deeply undervalued, both of which tend to underperform.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.

Castelnau Group GF Value Rank Related Terms

LSE:CGL
35GF Score
Castelnau Group Ltd LSE:CGL
GF Value Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Castelnau Group Business Description

Address Les Banques, Trafalgar Court, PO Box 255, St. Peter Port, Channel Islands, GGY, GY1 3QL
Castelnau Group Ltd operates as a closed-ended company. The company's principal activity is to seek to achieve a high rate of compound return over the long term by carefully selecting investments using a thorough and objective research process and paying a price that provides a material margin of safety against permanent loss of capital, but also a favorable range of outcomes. The company's investment objective is to compound shareholders' capital at a higher rate of return than the FTSE All-Share Total Return Index over the long term. The group has two reporting segments: Castelnau Group Limited and Castelnau Group Services Limited.
35GF Score

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