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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.
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.
Marine Bancorp FLA Piotroski F-Score Related Terms
Marine Bancorp FLA Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Marine Bancorp FLA'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.
MBOF vs FBSI, KLIB, FSMK: Piotroski F-Score Comparison
For the Banks - Regional subindustry, Marine Bancorp FLA'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.
Marine Bancorp FLA Piotroski F-Score vs Banks Industry
For the Banks industry and Financial Services sector, Marine Bancorp FLA's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Marine Bancorp FLA'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.
Marine Bancorp FLA's current Net Income (TTM) was 2.83.
==> 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.
Marine Bancorp FLA's return on assets of this year was 0.0043273. Marine Bancorp FLA's return on assets of last year was 0.0072468.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Marine Bancorp FLA's gearing of this year was 0.00970713. Marine Bancorp FLA's gearing of last year was 0.05135291.
==> 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
* Note that for banks and insurance companies, there's no Total Current Assets and Total Current Liabilities reported. Thus, we use Total Assets and Total Liabilities to calculate current ratio for banks and insurance companies.
Marine Bancorp FLA's current ratio of this year was 1.06261109. Marine Bancorp FLA's current ratio of last year was 1.05915549.
==> 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.
Marine Bancorp FLA's number of shares in issue this year was 1.829. Marine Bancorp FLA's number of shares in issue last year was 1.829.
==> 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.
* Note that for banks and insurance companies, there's no Gross Profit reported. Thus, we use net income instead of gross profit and calculate Net Margin for this score.
Marine Bancorp FLA's net margin of this year was 0.15741204. Marine Bancorp FLA's net margin of last year was 0.2287329.
==> Last year's net 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
Marine Bancorp FLA's asset turnover of this year was 0.0274903. Marine Bancorp FLA's asset turnover of last year was 0.03168236.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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6
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Marine Bancorp FLA has an F-score of 6 indicating the company's financial situation is typical for a stable company.
Marine Bancorp FLA (MBOF) has a Piotroski F-Score of 6 as of Aug. 13, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Marine Bancorp FLA and its competitors. This is 20% above median its historical median of 5.00. Over the past decade, Marine Bancorp FLA's Piotroski F-Score has ranged from 3.00 to 6.00.
Is Marine Bancorp FLA's Piotroski F-Score too high?
Marine Bancorp FLA's current Piotroski F-Score of 6 is 20% above median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 6.00. The Banks industry median Piotroski F-Score is 6.00. Marine Bancorp FLA's value of 6 is 0% at this industry median. Overall, Marine Bancorp FLA has a GF Score™ of 31/100, reflecting its overall financial health beyond just this single metric.
How does Marine Bancorp FLA's Piotroski F-Score compare to FBSI and KLIB?
Marine Bancorp FLA's Piotroski F-Score of 6 can be compared against companies in the Banks industry. The industry median Piotroski F-Score is 6.00. Marine Bancorp FLA's value of 6 is 0% at this benchmark. Historically, Marine Bancorp FLA's own Piotroski F-Score has ranged from 3.00 to 6.00 over the past decade. While the company's 10-year median is 5.00 vs. the industry median of 6.00, Marine Bancorp FLA 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 Banks company?
The median Piotroski F-Score among Banks companies is 6.00, based on 1,494 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. Marine Bancorp FLA's current Piotroski F-Score of 6 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 Marine Bancorp FLA and its competitors. For the Banks industry, the median Piotroski F-Score is 6.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Marine Bancorp FLA's current Piotroski F-Score is 6, which is 20% 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 Marine Bancorp FLA stock overvalued right now?
Marine Bancorp FLA (MBOF) has a current Piotroski F-Score of 6. The stock's GF Value™ is $18.47, compared to a current price of $43.75 — trading 136.9% above its estimated fair value. The current Piotroski F-Score is 6, which is 20% above median its 10-year median of 5.00 and 0% at the Banks industry median of 6.00. Marine Bancorp FLA's overall GF Score™ is 31/100 with 7 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 Marine Bancorp FLA (MBOF), the current Piotroski F-Score is 6 as of Aug. 13, 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 Marine Bancorp FLA (MBOF) Overvalued in 2026?
Based on GuruFocus' analysis, Marine Bancorp FLA stock appears to be overvalued.
The current stock price of $43.75 is trading 136.9% above its estimated GF Value™ of $18.47.
Key valuation signals for MBOF:
Piotroski F-Score: 6 (20% above median its 10-year median of 5.00)
GF Value™: $18.47 vs. price of $43.75 (136.9% above fair value)
No single metric tells the full story. See the MBOF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Marine Bancorp FLA Inc, through its subsidiary, is engaged in providing banking and related services. The Bank offers a variety of community banking services to individuals and corporate customers. The company offers Checking, Loans, Debit cards, Credit cards, Commercial Loans, Merchant Services, Business savings and money markets, Mobile Banking and related services. The loan portfolio segment includes Commercial real estate, Residential real estate, Construction and land development, Commercial and Consumer.
31GF Score
Get the complete analysis for MBOF
Piotroski F-Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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