ASAmol Shukla
55 mins lesson duration•11 mins read

Lesson 3: Fundamental Analysis for Stock Evaluation

Learn how to evaluate stocks using financial statements, ratios, and valuation metrics.

What is Fundamental Analysis?

Fundamental analysis is the process of evaluating a stock's intrinsic value by examining its financial health, competitive position, and growth prospects. It answers the question: "Is this company worth what the market is currently charging?"

The Three Financial Statements

Statement What It Shows Key Metrics
Income Statement Revenue, expenses, and profit over a period Revenue, Net Income, EPS
Balance Sheet Assets, liabilities, and equity at a point in time Total Assets, Debt, Equity
Cash Flow Statement Cash generated and used over a period Operating Cash Flow, Free Cash Flow

Mental model: Think of financial statements as a company's report card — the income statement shows grades (performance), the balance sheet shows resources (assets vs. liabilities), and the cash flow statement shows actual cash in hand.

Key Financial Ratios

Ratio Formula What It Tells You Good Benchmark
P/E Ratio Price per share / EPS How much you're paying for $1 of earnings 15-25 for stable companies
P/B Ratio Price per share / Book value per share How market value compares to net asset value < 3.0 is generally reasonable
Debt-to-Equity Total Debt / Shareholders' Equity Financial leverage and risk < 1.0 is conservative
Current Ratio Current Assets / Current Liabilities Short-term liquidity > 1.5 is healthy
ROE Net Income / Shareholders' Equity How efficiently equity generates profits > 15% is strong
ROA Net Income / Total Assets How efficiently assets generate profits > 5% is good

How to Read an Income Statement

Revenue → Cost of Goods Sold = Gross Profit Gross Profit → Operating Expenses = Operating Income Operating Income → Interest & Taxes = Net Income

Example: Revenue: $100M COGS: ($40M) Gross Profit: $60M (60% margin) Operating Expenses: ($30M) Operating Income: $30M (30% margin) Interest & Taxes: ($10M) Net Income: $20M (20% net margin)

Valuation Methods

1. Discounted Cash Flow (DCF)

Estimates a company's value based on projected future cash flows, discounted to present value.

Formula: Value = Σ (Cash Flow / (1 + Discount Rate)^Year)

Key insight: A company is worth the sum of all its future cash flows, adjusted for the time value of money.

2. Comparable Company Analysis (Comps)

Compare a company's valuation multiples to similar companies.

Example:

  • Company A P/E: 20
  • Company B P/E: 25
  • Company C P/E: 18
  • Industry Average: 21

If Company A trades at P/E 15, it might be undervalued.

3. Price-to-Earnings Growth (PEG) Ratio

Formula: PEG = P/E Ratio / Earnings Growth Rate

PEG Ratio Interpretation
< 1.0 Potentially undervalued
1.0 Fairly valued
> 1.0 Potentially overvalued

Building a Stock Analysis Framework

Step 1: Quantitative Analysis

  • Review financial statements (3-5 years)
  • Calculate key ratios
  • Compare to industry averages
  • Check for consistent growth

Step 2: Qualitative Analysis

  • Competitive advantage (moat)
  • Management quality
  • Industry position
  • Growth opportunities

Step 3: Valuation

  • Apply 2-3 valuation methods
  • Determine intrinsic value range
  • Compare to current price
  • Calculate margin of safety

Margin of Safety: The difference between intrinsic value and market price. A 20-30% margin of safety provides a cushion against estimation errors.

Common Mistakes to Avoid

  • Mistake: Relying on a single metric — Fix: Use multiple ratios and valuation methods.
  • Mistake: Ignoring industry context — Fix: Compare ratios to industry peers, not the overall market.
  • Mistake: Overcomplicating analysis — Fix: Focus on the 5-6 most important metrics.
  • Mistake: Ignoring qualitative factors — Fix: Numbers don't tell the whole story; understand the business.

Professional Tips & Tricks

  • Use company filings (10-K, 10-Q) for accurate financial data.
  • Look for consistent revenue and earnings growth over 5+ years.
  • Check the debt-to-equity ratio — too much debt is risky.
  • Calculate owner earnings (net income + depreciation - capital expenditures) for a true cash flow picture.

Key Takeaways

  • Fundamental analysis evaluates a stock's intrinsic value through financial statements.
  • Key ratios include P/E, P/B, Debt-to-Equity, ROE, and ROA.
  • Valuation methods include DCF, comps, and PEG ratio.
  • A margin of safety protects against estimation errors.
  • Combine quantitative and qualitative analysis for the best results.

Next up: Technical analysis — reading charts and understanding market psychology.

Interactive Lesson Code Snippet
# Stock Analysis Framework

## Financial Ratio Cheat Sheet

### Valuation Ratios
- P/E Ratio: Price ÷ Earnings per share
- P/B Ratio: Price ÷ Book value per share
- P/S Ratio: Price ÷ Sales per share
- PEG Ratio: P/E ÷ Earnings growth rate

### Profitability Ratios
- Gross Margin: (Revenue - COGS) ÷ Revenue
- Operating Margin: Operating Income ÷ Revenue
- Net Margin: Net Income ÷ Revenue
- ROE: Net Income ÷ Shareholders' Equity
- ROA: Net Income ÷ Total Assets

### Financial Health Ratios
- Current Ratio: Current Assets ÷ Current Liabilities
- Quick Ratio: (Current Assets - Inventory) ÷ Current Liabilities
- Debt-to-Equity: Total Debt ÷ Shareholders' Equity
- Interest Coverage: EBIT ÷ Interest Expense

## Example Analysis: Apple (AAPL)

### Income Statement Highlights
- Revenue: $394B (TTM)
- Net Income: $100B
- Net Margin: 25.4%
- EPS: $6.13

### Key Ratios
- P/E Ratio: 28.5 (vs industry avg 22)
- P/B Ratio: 45.2
- ROE: 160%
- Debt-to-Equity: 1.8

### Valuation Assessment
- Current Price: $175
- DCF Intrinsic Value: $195
- Margin of Safety: 10%
- Recommendation: Fairly valued, hold
Language: text

Code Visualization Tips

  • Create a financial dashboard with key metrics for easy comparison.
  • Draw a waterfall chart showing how revenue flows to net income.
  • Use a radar chart to compare a company's ratios to industry averages.

Professional Tips & Tricks

  • Always check the footnotes in financial statements — important details are often hidden there.
  • Look for companies with consistent revenue growth and expanding margins.
  • Compare current ratios to the company's own historical averages, not just industry peers.

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Financial Ratio Analysis

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Calculate the following ratios for a company of your choice using data from Yahoo Finance: P/E Ratio, Debt-to-Equity, ROE, and Current Ratio. Interpret what each ratio tells you about the company.
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