📖 行业与公司分析测试讲评

Equity Investments

I. Lesson Focus

This lesson integrates industry life-cycle analysis, Porter’s Five Forces, economic moat evaluation, DuPont decomposition, sustainable growth rate, and both relative and absolute valuation methods. Candidates learn to combine qualitative industry structure with quantitative financial and valuation metrics to solve integrated equity analysis problems.

II. The Problem

A candidate facing a vignette describing a firm in the growth stage with rising gross margins but falling net margins and increasing threat of new entrants cannot determine the sustainability of competitive advantage or the appropriate valuation multiple. This leads to high error rates (approximately 65 %) on integrated items. The lesson provides a systematic framework, three full worked cases, and eight high-frequency exam-style questions to master the fusion of qualitative and quantitative analysis required at Level I.

III. Core Framework of Industry Analysis

Industry analysis is the first step in the top-down equity valuation approach and answers whether the industry is worth investing in. CFA Level I emphasizes three tools.

1. Industry Life Cycle
2. Embryonic: slow sales growth, heavy investment, negative cash flow, high risk.
3. Growth: rapid sales growth, rising profit margins, intensifying competition.
4. Mature: stable growth, peak profit margins, most intense competition.
5. Decline: falling sales, excess capacity, compressed margins.

ROE, capital expenditure, and dividend payout ratios differ markedly across stages and are critical for selecting appropriate valuation multiples (P/E, EV/EBITDA).

1. Porter’s Five Forces
2. Rivalry among existing competitors
3. Threat of new entrants
4. Threat of substitutes
5. Bargaining power of suppliers
6. Bargaining power of buyers

The stronger the five forces, the closer long-run industry ROE moves toward WACC and the harder it is to sustain a competitive advantage.

1. Competitive Advantage and Economic Moat
   Industries with high barriers (pharmaceuticals, branded consumer goods) can sustain ROE > WACC for extended periods. Common moats include brand strength, economies of scale, network effects, patents, and regulatory barriers.

IV. Core Tools of Company Analysis

After selecting an attractive industry, micro-analysis of individual firms is required.

• SWOT Analysis: Strengths, Weaknesses, Opportunities, Threats.
• Comprehensive Financial Ratio Analysis (focus on trends versus peers)
• Profitability: Gross Margin, Operating Margin, Net Margin, ROE (DuPont: PM × AT × EM)
• Liquidity: Current Ratio, Quick Ratio
• Leverage: Debt-to-Equity, Interest Coverage

• Efficiency: Inventory Turnover, Receivables Turnover, Asset Turnover

• Sustainable Growth Rate
  $$ g = ROE \times (1 - \text{Dividend Payout Ratio}) $$
  If actual growth persistently exceeds sustainable growth, the firm must raise external capital or increase leverage, raising risk.

V. Valuation Methods in Industry and Company Analysis

1. Relative Valuation
2. P/E, P/B, EV/EBITDA

3. Adjustments required for differences in growth, ROE, risk (beta), and margin trends.

4. Absolute Valuation (DDM and FCFF)
   Multi-stage models are used for high-growth phases; mature stages converge to the Gordon growth model:
   $$ P_0 = \frac{D_1}{r - g} = \frac{E_1 \times (1-b)}{r - g} $$
   where $b$ is the retention ratio and $g = b \times ROE$.

Worked Cases

Case 1: Impact of Industry Life Cycle on Valuation Multiples

A consumer electronics firm is in the growth stage. EPS is expected to grow at 25 % for the next three years, then enter a mature stage with a perpetual 4 % growth rate. Current EPS = 2.0, payout ratio = 20 % in high-growth and 60 % in mature stage, required return r = 10 %. Calculate the justified forward P/E.

Solution:
High-growth dividends:
D1 = 2.0 × 1.25 × 0.2 = 0.5
D2 = 0.5 × 1.25 = 0.625
D3 = 0.625 × 1.25 = 0.78125

Year-4 earnings: E4 = 2.0 × (1.25)^3 × 1.04 ≈ 4.096
D4 = 4.096 × 0.6 ≈ 2.458
Terminal value at t=3: P3 = 2.458 / (0.10 – 0.04) = 40.96

Present values:
PV(D1) = 0.5 / 1.1 ≈ 0.455
PV(D2) = 0.625 / 1.21 ≈ 0.517
PV(D3) = 0.78125 / 1.331 ≈ 0.587
PV(P3) = 40.96 / 1.331 ≈ 30.77

Total equity value ≈ 32.33. Justified forward P/E = 32.33 / (2.0 × 1.25) ≈ 12.93×.

Case 2: Porter’s Five Forces and ROE Sustainability

The pharmaceutical industry has five dominant firms, strong patent protection, high R&D barriers, fragmented buyers (hospitals), and low substitute threat. Average ROE over the past 10 years is 22 %, WACC = 9 %. Determine whether long-run economic profit can be sustained and explain.

Solution:
Overall five forces are weak (patents create entry barriers and segment markets). The clear moat allows ROE to remain at 22 % > WACC 9 % for a prolonged period, generating positive economic value added (EVA > 0). If a large patent cliff occurs, threat of entry rises and ROE will converge toward WACC.

Case 3: DuPont Analysis and Sustainable Growth Rate

A firm reports net profit margin = 8 %, asset turnover = 1.25, equity multiplier = 2.0, payout ratio = 40 %. Calculate (1) ROE, (2) sustainable growth rate, (3) whether 15 % actual growth is sustainable.

Solution:
(1) ROE = 8 % × 1.25 × 2.0 = 20 %
(2) Retention ratio = 1 – 0.4 = 0.6; g = 20 % × 0.6 = 12 %
(3) Actual growth (15 %) > sustainable growth (12 %), therefore unsustainable. The firm will need higher leverage, improved margins, or a lower payout ratio, otherwise cash will be depleted or debt risk will rise.

Traps

Key Formulas

• DuPont ROE = Net Profit Margin × Asset Turnover × Equity Multiplier
• Sustainable growth rate $g = ROE \times (1 - \text{payout ratio})$
• Gordon growth model $P_0 = \frac{D_1}{r-g}$
• Justified leading P/E ≈ $\frac{(1-b)(1+g)}{r-g}$
• Economic profit = NOPAT – (WACC × Invested Capital)

Practice Questions

Q1. The feature least likely to be observed in an embryonic-stage industry is:
A. High R&D spending
B. Negative free cash flow
C. High dividend payout ratio
D. High business risk

Q2. According to Porter’s Five Forces, which development is most likely to reduce long-run industry ROE?
A. Extension of patent protection periods
B. Increased concentration among key raw-material suppliers
C. Significant increase in product differentiation
D. Reduction of existing competitors from eight to four firms

Q3. A company has ROE = 18 %, payout ratio = 30 %, and WACC = 11 %. Its sustainable growth rate is closest to:
A. 5.4 %
B. 12.6 %
C. 18.0 %
D. 30.0 %

Q4. When applying relative valuation, the most appropriate adjustment for a growth-stage company is to assign:
A. A higher EV/EBITDA multiple
B. A lower P/B multiple
C. No adjustment for growth differences
D. Only historical P/E ratios

Q5. Which indicator most clearly signals a strong economic moat?
A. Current gross margin above industry average
B. ROE persistently and significantly above WACC for the past 10 years
C. Asset turnover higher than peers
D. Current ratio greater than 2

Q6. A firm reports current EPS = 4, expected growth of 20 % for two years, then perpetual 5 % growth. Payout ratio = 25 % in high-growth, 70 % in perpetuity; required return = 12 %. The justified trailing P/E is closest to:
A. 12.5×
B. 15.8×
C. 18.2×
D. 21.4×

Q7. Which statement about the industry life cycle is least accurate?
A. The mature stage typically shows the highest profit margins
B. Capital expenditure is usually below depreciation in the decline stage
C. ROE usually continues to rise in the growth stage
D. Embryonic-stage firms typically adopt high dividend-payout policies

Q8. When buyer bargaining power is strong, the most likely result is:
A. Higher industry entry barriers
B. Compression of industry average gross margins
C. Simultaneously higher supplier power
D. Automatic reduction in substitute threat

Answers

Takeaways

• Industry analysis requires simultaneous use of life-cycle stage, Porter’s Five Forces, and moat assessment.
• ROE is attractive only when it exceeds WACC and is sustainable.
• The sustainable growth rate is the key benchmark for assessing whether reported growth is healthy.
• Valuation multiples must be adjusted for life-cycle differences; direct comparison across stages is a common trap.
• Ratio analysis must examine trends, peer benchmarks, and consistency with the firm’s life-cycle position.
• A true economic moat is defined by long-term ability to earn returns above the cost of capital, not merely high current margins.