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Piotroski F-Score Calculator

Calculate Stanford's 9-point Piotroski F-Score to scientifically evaluate a stock's fundamental health and avoid bankruptcy value traps.

Section 1: Profitability (4/4)

Section 2: Leverage, Liquidity & Source of Funds (3/3)

Section 3: Operating Efficiency (0/2)

Absolute F-Score

7 / 9
Stable / Average

Section Sub-Matrix

Profitability Core:4 / 4
Leverage & Liquidity:3 / 3
Operating Efficiency:0 / 2
Institutional Diagnosis:Typical corporate standing. Neither distress nor immense strength.
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What is The 9-Point F-Score Framework?

The Piotroski F-Score is a rigorous 9-point fundamental accounting checklist developed by Stanford Professor Joseph Piotroski. Designed structurally to evaluate a company's financial health, operational efficiency, and liquidity trends, the F-Score allows value investors to mathematically separate high-quality fundamental opportunities from dangerous, deteriorating bankruptcy value traps.

Mathematical Foundation

The Binary Scoring Matrix
F-Score=∑i=19Ci\text{F-Score} = \sum_{i=1}^{9} C_i
CC= A specific accounting condition. If the condition is met, the company receives 1 point. If failed, 0 points.
Σ\Sigma= The final aggregate score, ranging entirely from a minimum of 0 to a flawless maximum of 9.

Laws & Principles

  • Profitability Signals (4 Points): The company must prove core viability by generating positive Net Income, a positive Return on Assets (ROA), an increasing year-over-year ROA, and Operating Cash Flow that exceeds its Net Income (proving earnings quality).
  • Leverage & Liquidity Signals (3 Points): The balance sheet must explicitly de-risk by demonstrating a lower ratio of long-term debt year-over-year, an increasing Current Ratio, and an absolute lack of equity dilution (zero new share issuance).
  • Operational Efficiency Signals (2 Points): The underlying business model must exhibit pricing power and sales efficiency by demonstrating a year-over-year improvement in both Gross Margin and absolute Asset Turnover.

Step-by-Step Example Walkthrough

" You screen for undervalued manufacturing stocks and find an industrial parts manufacturer trading at a suspiciously low 8x P/E. You run the F-Score to confirm if it is a trap. "

  1. 1. Evaluate Profitability: Net income is positive (+1). Cash flow exceeds income (+1). ROA improved (+1).
  2. 2. Evaluate Liquidity: It paid down $50M in debt (+1). Current ratio dropped (-0). No new shares issued (+1).
  3. 3. Evaluate Efficiency: Gross margin expanded 2% (+1). Asset turnover remained flat (-0).
  4. 4. Aggregate Final Matrix: The algorithm outputs a total score of 6 out of 9.
  5. 5. Execute Decision: A score of 6 indicates decent, stabilizing financial health. The low 8x P/E is genuinely attractive and likely not an impending bankruptcy trap.
Final Result: The stock registers a structurally solid Piotroski F-Score of 6. While not a flawless 9, the underlying accounting signals demonstrate strong debt repayment and expanding margins, validating the value-buy thesis.

Quick Answer: How do I interpret the F-Score?

The Piotroski F-Score objectively grades companies. A high score (7-9) indicates strong, improving financials and management efficiency. A low score (0-3) signals deteriorating fundamentals, weak cash generation, and elevated bankruptcy risk, heavily warning investors away from seemingly "cheap" value traps.

Binary Evaluation Protocol Formula

Matrix Scoring Logic

F_Score_Total = Sum_of_Passed_Accounting_Gates (0_to_9_Points)

  • 1. Gate 1-4 (Profitability)— Check trailing twelve-month positive Net Income, positive Operating Cash Flow, positive ROA, and ensure Cash Flow > Net Income. Add up to 4 points.
  • 2. Gate 5-7 (Solvency)— Check if Year-over-Year Debt decreased, Current Ratio increased, and Share Count remained equal or decreased (no dilution). Add up to 3 points.
  • 3. Gate 8-9 (Efficiency)— Check if Year-over-Year Gross Margin % expanded and Asset Turnover expanded. Add up to 2 points.
  • 4. Final Aggregation— Sum the binary passes. A 9/9 is mathematically flawless; a 0/9 is a near-mathematical guarantee of distress or bankruptcy.

Distress Screening in Practice

Model A: The True Value Buy

Low P/E | Improving Fundamentals

  1. 1. Context: A legacy retail chain trades at an optical 6x P/E multiple. The market assumes retail is entirely dying.
  2. 2. The Execution: You analyze the SEC 10-K. They produced $20M in income (+1), but $40M in cash flow (+1). They retired $30M in debt (+1), closed bad stores boosting gross margins (+1), and bought back stock instead of issuing it (+1).
  3. 3. The Output Reality: The F-score registers an 8. This is not a dying company—it is a hyper-efficient turnaround trading at an irrationally cheap 6x price constraint. Aggressive Buy protocol.

Model B: The Value Trap

Low P/E | Accelerating Decay

  1. 1. Context: An offshore drilling rig company trades at a 4x P/E ratio and has a seemingly massive 12% dividend.
  2. 2. The Execution: Their net income is negative (-0), debt expanded (-0), margins collapsed (-0), and they heavily diluted shareholders to pay that artificial dividend (-0).
  3. 3. The Output Delta: The F-score registers a devastating 1. The 4x P/E is entirely justified because the company is mathematically bleeding to death. Critical Avoid protocol.

F-Score Institutional Grading Tiers

F-Score Range Fundamental Diagnosis Value Trap Risk Institutional Action
8 – 9 Points Elite Quality (Improving) Extremely Low Aggressive Buy / Conviction Hold
5 – 7 Points Stable / Acceptable Moderate Standard Portfolio Inclusion
3 – 4 Points Deteriorating Warning Elevated Halt Purchases / Review Core Thesis
0 – 2 Points Toxic Fundamental Decay Critical (Severe Trap) Liquidate / Potential Short Candidate

Value Filtering Strategy

Do This

  • ✓Isolate the True Bargains. Combine the F-Score directly with traditional valuation multiples. Scanning for companies operating in the bottom 20% of Price-to-Book (P/B) ratios that simultaneously possess an F-Score of 8 or 9 historically isolates the strongest systematic value returns.
  • ✓Monitor Trend Velocity. A company moving from a 4 to a 7 over two quarters indicates an aggressive and highly successful management restructuring, making it a prime candidate for a turnaround investment.

Avoid This

  • ✗Misapplying to Financials. Do not apply the F-Score strictly to commercial banks or heavy financial institutions. Their unique debt structures and capital tier ratios fundamentally distort standard manufacturing-centric leverage and liquidity signals.
  • ✗The Earnings Quality Illusion. If a company scores a 9 but its Operating Cash Flow is explicitly lower than its reported Net Income, the company automatically fails the most critical Piotroski test (#4). This single failure often signals aggressive accounting manipulation designed to mask weakness.

Frequently Asked Questions

Who is the Piotroski F-Score designed for?

It was designed explicitly for "Value Investors" who target fundamentally cheap companies. Deep-value stocks frequently comprise distressed operations facing severe market pessimism. The F-Score acts as an automated survival filter, preventing the investor from buying a terminal company destined for Chapter 11 bankruptcy.

Does a low Piotroski F-Score explicitly guarantee bankruptcy?

No. An F-Score of 0 or 1 simply mathematically identifies maximum operational deterioration and cash-drain across the entire trailing 12-month period. Management can inject outside bailout capital, divest legacy sectors, or pivot strategy fully, but the current underlying accounting health is objectively toxic.

Is the F-Score objectively applicable to evaluating hyper-growth tech stocks?

It is heavily discouraged. Early-stage technology and SaaS companies intentionally burn cash, issue massive restrictive dilution to acquire talent, and run deep negative income to prioritize aggressive market-share expansion. They will structurally fail almost every Piotroski logic gate, despite being fundamentally sound relative to their unique growth cycle.

How does the Altman Z-Score compare to the Piotroski F-Score?

The Altman Z-Score is a formula explicitly engineered to predict strict bankruptcy within 24 months by weighting assets to liabilities in a continuous calculation. Piotroski is a broader, gentler 9-point checklist designed specifically to evaluate general equity and management improvement. Combining both secures extreme downside portfolio protection.

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