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Keystone Law GroupLSE:KEYS +0.38%93 Piotroski F-Score is 5 as of Jul. 20, 2026, which is 29% below its 10-year median of 7.00. GuruFocus rates LSE:KEYS with a GF Score™ of 93/100 and a GF Value™ of £7.19 (Modestly Undervalued). The stock has 1 warning sign investors should review. Among 1,066 Business Services companies, Keystone Law Group ranks better than 51.22% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Keystone Law Group has an F-score of 5 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Keystone Law Group's Piotroski F-Score or its related term are showing as below:
LSE:KEYS'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 7 Max: 9
Current: 5
During the past 12 years, the highest Piotroski F-Score of Keystone Law Group was 9. The lowest was 2. And the median was 7.
Keystone Law Group (LSE:KEYS) Piotroski F-Score Explanation
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Keystone Law Group Piotroski F-Score Related Terms
Keystone Law Group Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Keystone Law Group's Piotroski F-Score can be seen below:
* 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.
LSE:KEYS vs CTAS, CPRT, ULS: Piotroski F-Score Comparison
For the Specialty Business Services subindustry, Keystone Law Group's Piotroski F-Score, along with its competitors' market caps and Piotroski F-Score 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.
Keystone Law Group Piotroski F-Score vs Business Services Industry
For the Business Services industry and Industrials sector, Keystone Law Group's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Keystone Law Group's Piotroski F-Score falls into.
* 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.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Keystone Law Group's current Net Income (TTM) was 11.1.
==> Positive ==> Score 1.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Keystone Law Group's return on assets of this year was 0.24203961. Keystone Law Group's return on assets of last year was 0.20704686.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Keystone Law Group's gearing of this year was 0.02244439. Keystone Law Group's gearing of last year was 0.03593516.
==> This year is lower or equal to last year. ==> Score 1.
Question 6. Change in Working Capital (Liquidity)
Compare this year's current ratio (current assets divided by current liabilities) to last year's current ratio.
Score 1 if this year's current ratio is higher, 0 if it's lower
Keystone Law Group's current ratio of this year was 1.59321082. Keystone Law Group's current ratio of last year was 1.68147034.
==> Last year's current ratio is higher ==> Score 0.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Keystone Law Group's number of shares in issue this year was 32.285. Keystone Law Group's number of shares in issue last year was 32.102.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Keystone Law Group's gross margin of this year was 0.25484288. Keystone Law Group's gross margin of last year was 0.26072894.
==> Last year's gross margin is higher ==> Score 0.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Keystone Law Group's asset turnover of this year was 2.52038516. Keystone Law Group's asset turnover of last year was 2.36597651.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
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5
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Keystone Law Group has an F-score of 5 indicating the company's financial situation is typical for a stable company.
Keystone Law Group (LSE:KEYS) has a Piotroski F-Score of 5 as of Jul. 20, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Keystone Law Group and its competitors. This is 29% below median its historical median of 7.00. Over the past decade, Keystone Law Group's Piotroski F-Score has ranged from 2.00 to 9.00. According to the industry distribution chart, Keystone Law Group ranks #520 out of 1066 companies in the Business Services industry, placing it in the top 48.8%.
Is Keystone Law Group's Piotroski F-Score too high?
Keystone Law Group's current Piotroski F-Score of 5 is 29% below median its 10-year median of 7.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 9.00. The Business Services industry median Piotroski F-Score is 5.00. Keystone Law Group's value of 5 is 0% at this industry median. Based on the distribution chart, Keystone Law Group ranks #520 out of 1066 companies in the Business Services industry, which is above the industry midpoint. Overall, Keystone Law Group has a GF Score™ of 93/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Keystone Law Group's Piotroski F-Score compare to CTAS and CPRT?
According to the Business Services industry distribution chart, Keystone Law Group ranks #520 out of 1066 companies for Piotroski F-Score. This puts Keystone Law Group in the upper half of its industry. The industry median Piotroski F-Score is 5.00. Keystone Law Group's value of 5 is 0% at this benchmark. Historically, Keystone Law Group's own Piotroski F-Score has ranged from 2.00 to 9.00 over the past decade. While the company's 10-year median is 7.00 vs. the industry median of 5.00, Keystone Law Group has consistently been at the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Piotroski F-Score for a Business Services company?
The median Piotroski F-Score among Business Services companies is 5.00, based on 1,066 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Keystone Law Group's current Piotroski F-Score of 5 is 0% at 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Keystone Law Group and its competitors. For the Business Services industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Keystone Law Group's current Piotroski F-Score is 5, which is 29% below median its own 10-year median of 7.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Keystone Law Group stock overvalued right now?
Based on GuruFocus' analysis, Keystone Law Group (LSE:KEYS) is currently considered Modestly Undervalued. The stock's GF Value™ is £7.19, compared to a current price of £5.33 — trading 25.9% below its estimated fair value. The current Piotroski F-Score is 5, which is 29% below median its 10-year median of 7.00 and 0% at the Business Services industry median of 5.00. Keystone Law Group's overall GF Score™ is 93/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Keystone Law Group (LSE:KEYS), the current Piotroski F-Score is 5 as of Jul. 20, 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 Keystone Law Group (LSE:KEYS) Overvalued in 2026?
Based on GuruFocus' analysis, Keystone Law Group stock appears to be undervalued.
The current stock price of £5.33 is trading 25.9% below its estimated GF Value™ of £7.19.
GuruFocus considers Keystone Law Group to be Modestly Undervalued.
Key valuation signals for LSE:KEYS:
Piotroski F-Score: 5 (29% below median its 10-year median of 7.00)
GF Value™: £7.19 vs. price of £5.33 (25.9% below fair value)
Industry Position: 0% at the Business Services median (#520 of 1066)
No single metric tells the full story. See the LSE:KEYS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Keystone Law Group PLC is a law firm. The company provides legal services to a client base. It offers conventional legal advice in the areas including property, commercial, corporate, employment, family, litigation, private client, and others. It derives revenue from rendering of services and other revenue. The company serves sectors such as Aviation, Education, Financial Services, Food and Beverage, High-Net-Worth Family Office, Hotels, Hospitality and Leisure, In-House Legal, Life Sciences and Healthcare, Marine and Shipping, Media, Satellite, Space and Communications, and others.
93GF Score
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