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Bone BiologicsBBLG -0.93%30 Piotroski F-Score is 4 as of Jul. 25, 2026, which is 33% above its 10-year median of 3.00. GuruFocus rates BBLG with a GF Score™ of 30/100. Among 1,333 Biotechnology companies, Bone Biologics ranks better than 73.97% 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
Bone Biologics has an F-score of 4 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Bone Biologics's Piotroski F-Score or its related term are showing as below:
BBLG'
s Piotroski F-Score Range Over the Past 10 Years
Min: 1 Med: 3 Max: 4
Current: 4
During the past 12 years, the highest Piotroski F-Score of Bone Biologics was 4. The lowest was 1. And the median was 3.
Bone Biologics (NAS:BBLG) 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.
Bone Biologics Piotroski F-Score Related Terms
Bone Biologics Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Bone Biologics'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.
BBLG vs VRAX, PKTX, OGEN: Piotroski F-Score Comparison
For the Biotechnology subindustry, Bone Biologics'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.
Bone Biologics Piotroski F-Score vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Bone Biologics's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Bone Biologics'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.
Bone Biologics's current Net Income (TTM) was -2.86.
==> Negative ==> Score 0.
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.
Bone Biologics's return on assets of this year was -0.90417457. Bone Biologics's return on assets of last year was -1.11041667.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Bone Biologics's current ratio of this year was 16.11326861. Bone Biologics's current ratio of last year was 12.59760956.
==> 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.
Bone Biologics's number of shares in issue this year was 1.795. Bone Biologics's number of shares in issue last year was 0.531.
==> 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.
Bone Biologics's gross margin of this year was . Bone Biologics's gross margin of last year was .
==> 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
Bone Biologics's asset turnover of this year was 0. Bone Biologics's asset turnover of last year was 0.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Bone Biologics has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Bone Biologics (BBLG) has a Piotroski F-Score of 4 as of Jul. 25, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Bone Biologics and its competitors. This is 33% above median its historical median of 3.00. Over the past decade, Bone Biologics' Piotroski F-Score has ranged from 1.00 to 4.00. According to the industry distribution chart, Bone Biologics ranks #347 out of 1333 companies in the Biotechnology industry, placing it in the top 26%.
Is Bone Biologics' Piotroski F-Score too high?
Bone Biologics' current Piotroski F-Score of 4 is 33% above median its 10-year median of 3.00. Over the past 10 years, this metric has ranged from a low of 1.00 to a high of 4.00. The Biotechnology industry median Piotroski F-Score is 3.00. Bone Biologics' value of 4 is 33.3% above this industry median. Based on the distribution chart, Bone Biologics ranks #347 out of 1333 companies in the Biotechnology industry, which is above the industry midpoint. Overall, Bone Biologics has a GF Score™ of 30/100, reflecting its overall financial health beyond just this single metric.
How does Bone Biologics' Piotroski F-Score compare to VRAX and PKTX?
According to the Biotechnology industry distribution chart, Bone Biologics ranks #347 out of 1333 companies for Piotroski F-Score. This puts Bone Biologics in the upper half of its industry. The industry median Piotroski F-Score is 3.00. Bone Biologics' value of 4 is 33.3% above this benchmark. Historically, Bone Biologics' own Piotroski F-Score has ranged from 1.00 to 4.00 over the past decade. While the company's 10-year median is 3.00 vs. the industry median of 3.00, Bone Biologics 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 Biotechnology company?
The median Piotroski F-Score among Biotechnology companies is 3.00, based on 1,333 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. Bone Biologics's current Piotroski F-Score of 4 is 33.3% 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 Bone Biologics and its competitors. For the Biotechnology industry, the median Piotroski F-Score is 3.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Bone Biologics's current Piotroski F-Score is 4, which is 33% above median its own 10-year median of 3.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Bone Biologics stock overvalued right now?
Bone Biologics (BBLG) has a current Piotroski F-Score of 4. The current Piotroski F-Score is 4, which is 33% above median its 10-year median of 3.00 and 33.3% above the Biotechnology industry median of 3.00. Bone Biologics' overall GF Score™ is 30/100. 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 Bone Biologics (BBLG), the current Piotroski F-Score is 4 as of Jul. 25, 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.
Bone Biologics Corp a medical device company that is currently focused on bone regeneration in spinal fusion using the recombinant human protein known as NELL-1. NELL-1 in combination with DBM, demineralized bone matrix, is an osteopromotive recombinant protein that provides target specific control over bone regeneration. It is a clinical-stage entity. The production and marketing of its products and ongoing research and development activities are subject to extensive regulation by numerous governmental authorities in the United States.
30GF Score
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