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Graham & Dodd stipulated that the most important factor in determining a security's intrinsic value is a forcast of "earning power".
JB Willians proposed discounted dividents model.

Valuation Process
    >Understanding the business
    >Forecasting company performance
    >Selecting valuation model
    >Recommendation
    Equity value = Max[ Liquidation value , Going-concern value ]   

Business Cycle
    >Initial Recovery
        Stock ↗  Bond yield ↗    Confidence↗         S-T rate,    inflation Low
    >Early Expansion
        Stock↗   Bond yield ↗    Confidence↗         S-T rate↗,    inflation↗       
    >Late Expansion
        Stock→   Bond yield↑    Confidence↑         S-T rate↑,    inflation↑
    >Slow Down
        Stock↘   Bond yield→    Confidence↘       S-T rate↘,    inflation↗
    >Recession
        Stock →↑  Bond yield↓    Confidence↓         S-T rate↓,    inflation↘

。Business cycle turning points are so difficult to predict causing analyst to slightly adjust portfolio.
。Bond evaluation focus on inflation and downgrade risk; Equity evaluation focus on corporate earnings
。Infaltion may have different impact in each company, depending on the ability to full pass on price increases, so called demand elastic.

Taylor rule:       
    r[target]=r[neutral]+{ 0.5 x (GDP[expected]-GDP[trend]) +0.5 x (inflation[expected]-inflation[trend]) }

Industry Life cycle
    >Pioneering development
        growth ↗    profit→     ROE→
    >Rapid accelerating growth
        growth ↑    profit↗     ROE→
    >Mature growth
        growth ↑    profit↘     ROE↗
    >Stabilization
        growth ↗    profit↘     ROE↘
    >Deceleration
        growth ↘    profit↘     ROE↘

Industrial Analysis
    > Industry classification: business cycle, life cycle position
    > External factors: technology, government, social, demographic, foreign movement
    > Demand analysis: end users, real and nominal growth, trends
    > Supply analysis: degree of concentration, ease of entry, industry capacity
    > Profitability analysis: supply/demand analysis, pricing & cost factors
    >International competition analysis:
        。supplier power, buyer power, barriers to entry, degree of rivalry, threat of substitutes
        。cost leadership, differentiation, focus strategy
        。value chain competition: the learning curve, economies of scale & scope, network externalities.


(1) Discounted Cash Flows (DDM)
    
     Golden growth model: assume perpetual growth
            P_0 = \frac{D_1}{k-g}     P = D\times\frac{1+g}{k-g}   
     Two-stage DDM: assumes that two different growth rates.

     H model: assumes that growth begins at some super-normal rate, then the growth rate declines in a linear fashion until it reaches the normal rate.
       
     Pros:
        >suitable for stable growth and dividend policy companies.
        >suitable for broad-based equity indexes
        >the investors take a non-control perspective
     Cons:
        >values are very sensitive to g,r
        >inapplicable to unstable growth & dividend policy stocks
        >the accurate estimation of the terminal value of the stock is a key of DDMs.

    Estimation of r
        。CAPM    r = rf + beta x (rm - rf) [risk premium]
        。Bond approach    r = L-T debt + risk premium
        。Implied r    estimated from PE, golden model

    Suitable Growth Rate(SGR)
        g = b x ROE = ( 1 - dividend payout rate) x ROE
        assumption:
              。sustain a target capital structure
              。sales growth positive proportion to assets growth
              。stable dividend payout rate, i.e. b=constant


(2) Free Cash Flow
    
     Free Cash Flow of the Firm: Firm capital perspective
     FCFF = NI + NCC + Int(1-Tax) - FCInv - △WC
              = CFO + Int(1-Tax)  - CFI
              = EBIT(1-Tax) + Dep - FCInv - △WC
              = EBITDA(1-Tax) + Dep(Tax) - FCInv - △WC
     Free Cash Flow of the equity: shareholder perspective
     FCFE = FCFF - Int(1-Tax) +CFF
,where CFO: Operating CFs, NCC: Non-CF items(depreciation, amortization, ), CFI: Investment CFs, CFF: Financing CFs

     Valuation of Equity = Discounted FCFE(r) = Discounted FCFF(wacc) - Debt

。Cash dividends, share repurchase, cs issuance do NOT affect FCFF & FCFE
。Focusing on operating items, △WC excludes cash, S-T debt(notes payable, the current portion of the long-term debt).
。Int(1-Tax) belongs to FCFF, NOT FCFE.

     Pros:
         >pay no or low cash dividends
         >discretionary dividend policy
         >假設投資者將永續擁有企業股權,當企業無法創造自由現金流量的淨增加、企業價值將持續走低,股票每股價值亦將下降。 
         >CF available to shareholder's if they controlled the company
         >FCFE for stable capital structure; FCFF for volatile capital structure & significant debt outstanding

(3) Price Multiples
     PE ratio

        。Remve cyclical influences(normalized eps), nonrecurring components

        Pros:
         >earning power is a chief driver
         >L-R  average return
        Cons:
         >EPS can be negative
         >EPS may be volatile and manipulated
         >EPS can be negative      
   
    PB ratio
        Pros:
         >stable & general positive
         >mainly liquid assets(i.e. banking investments)
        Cons:
         >accounting effects
         >historical purchase costs
         >ignoring other critical operating factors
    PCF ratio
        Pros:
         >stable & less manipulated
         >accounting conservatism
        Cons:
         >P/FCFF is more volatile
   
    PSales ratio
        Pros:
         >less distortion
         >focus on cyclical, mature, zero-income companies
        Cons:
         >NO cost structure
         >revenue recognition policy

    Dividend yield
        Pros:
         >less risky than capital appreciation      
        Cons:
         >NOT using all information(risk, expected growth, financial strength)
         >trade off future growth and dividend
        
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