TelestoWAR:TLO 74 Piotroski F-Score is 7 as of Jun. 27, 2026, which is 40% above its 10-year median of 5.00. GuruFocus rates WAR:TLO with a GF Score™ of 74/100 and a GF Value™ of zł27.54 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 240 Waste Management companies, Telesto ranks better than 89.17% on this metric.
Good Sign:
Piotroski F-Score is 7, indicates a very healthy situation.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Telesto has an F-score of 7. It is a good or high score, which usually indicates a very healthy situation.
The historical rank and industry rank for Telesto's Piotroski F-Score or its related term are showing as below:
WAR:TLO'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 5 Max: 9
Current: 7
During the past 13 years, the highest Piotroski F-Score of Telesto was 9. The lowest was 2. And the median was 5.
Telesto (WAR:TLO) 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.
Telesto Piotroski F-Score Related Terms
Telesto Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Telesto'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.
WAR:TLO vs WM, RSG, WCN: Piotroski F-Score Comparison
For the Waste Management subindustry, Telesto'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.
Telesto Piotroski F-Score vs Waste Management Industry
For the Waste Management industry and Industrials sector, Telesto's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Telesto'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.
Telesto's current Net Income (TTM) was 0.17.
==> 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.
Telesto's current ratio of this year was 3.53880266. Telesto's current ratio of last year was 3.00517369.
==> This year's current ratio is higher. ==> Score 1.
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.
Telesto's number of shares in issue this year was 1.64. Telesto's number of shares in issue last year was 1.64.
==> There is smaller number of shares in issue this year, or the same. ==> Score 1.
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.
Telesto's gross margin of this year was 0.56271331. Telesto's gross margin of last year was 0.57543248.
==> 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
Telesto's asset turnover of this year was 1.05049298. Telesto's asset turnover of last year was 1.03713491.
==> This year's asset turnover is higher. ==> Score 1.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Telesto has an F-score of 7. It is a good or high score, which usually indicates a very healthy situation.
Telesto (WAR:TLO) has a Piotroski F-Score of 7 as of Jun. 27, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Telesto and its competitors. This is 40% above median its historical median of 5.00. Over the past decade, Telesto's Piotroski F-Score has ranged from 2.00 to 9.00. According to the industry distribution chart, Telesto ranks #26 out of 240 companies in the Waste Management industry, placing it in the top 10.8%.
Is Telesto's Piotroski F-Score too high?
Telesto's current Piotroski F-Score of 7 is 40% above median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 9.00. The Waste Management industry median Piotroski F-Score is 5.00. Telesto's value of 7 is 40% above this industry median. Based on the distribution chart, Telesto ranks #26 out of 240 companies in the Waste Management industry, which is in the top quartile — a strong position relative to peers. Overall, Telesto has a GF Score™ of 74/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Telesto's Piotroski F-Score compare to WM and RSG?
According to the Waste Management industry distribution chart, Telesto ranks #26 out of 240 companies for Piotroski F-Score. This places Telesto in the top 11% of its industry — outperforming the majority of peers. The industry median Piotroski F-Score is 5.00. Telesto's value of 7 is 40% above this benchmark. Historically, Telesto'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 5.00 vs. the industry median of 5.00, Telesto has consistently been above 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 Waste Management company?
The median Piotroski F-Score among Waste Management companies is 5.00, based on 240 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. Telesto's current Piotroski F-Score of 7 is 40% above 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 Telesto and its competitors. For the Waste Management 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. Telesto's current Piotroski F-Score is 7, which is 40% above median its own 10-year median of 5.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Telesto stock overvalued right now?
Based on GuruFocus' analysis, Telesto (WAR:TLO) is currently considered Possible Value Trap. The stock's GF Value™ is zł27.54, compared to a current price of zł13.60 — trading 50.6% below its estimated fair value. The current Piotroski F-Score is 7, which is 40% above median its 10-year median of 5.00 and 40% above the Waste Management industry median of 5.00. Telesto's overall GF Score™ is 74/100 with 4 warning signs 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 Telesto (WAR:TLO), the current Piotroski F-Score is 7 as of Jun. 27, 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 Telesto (WAR:TLO) Overvalued in 2026?
Based on GuruFocus' analysis, Telesto stock appears to be undervalued.
The current stock price of zł13.60 is trading 50.6% below its estimated GF Value™ of zł27.54.
GuruFocus considers Telesto to be Possible Value Trap.
Key valuation signals for WAR:TLO:
Piotroski F-Score: 7 (40% above median its 10-year median of 5.00)
GF Value™: zł27.54 vs. price of zł13.60 (50.6% below fair value)
Industry Position: 40% above the Waste Management median (#26 of 240)
No single metric tells the full story. See the WAR:TLO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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