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Some Lessons From Capital Market History

Chapter Twelve. Some Lessons From Capital Market History. Risk, Return and Financial Markets. We can examine returns in the financial markets to help us determine the appropriate returns on non-financial assets Lesson from capital market history There is a reward for bearing risk

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Some Lessons From Capital Market History

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  1. Chapter Twelve Some Lessons From Capital Market History

  2. Risk, Return and Financial Markets • We can examine returns in the financial markets to help us determine the appropriate returns on non-financial assets • Lesson from capital market history • There is a reward for bearing risk • The greater the potential reward, the greater the risk • This is called the risk-return trade-off

  3. Dollar Returns 12.1 • Total dollar return = income from investment + capital gain (loss) due to change in price • Example: • You bought a bond for $950 1 year ago. You have received two coupons of $30 each. You can sell the bond for $975 today. What is your total dollar return? • Income = 30 + 30 = 60 • Capital gain = 975 – 950 = 25 • Total dollar return = 60 + 25 = $85

  4. Percentage Returns • It is generally more intuitive to think in terms of percentages than dollar returns • Dividend yield = income / beginning price • Capital gains yield = (ending price – beginning price) / beginning price • Total percentage return = dividend yield + capital gains yield

  5. Example – Calculating Returns • You bought a stock for $35 and you received dividends of $1.25. The stock is now selling for $40. • What is your dollar return? • Dollar return = 1.25 + (40 – 35) = $6.25 • What is your percentage return? • Dividend yield = 1.25 / 35 = 3.57% • Capital gains yield = (40 – 35) / 35 = 14.29% • Total percentage return = 3.57 + 14.29 = 17.86%

  6. The Importance of Financial Markets 12.2 • Financial markets allow companies, governments and individuals to increase their utility • Savers have the ability to invest in financial assets so that they can defer consumption and earn a return to compensate them for doing so • Borrowers have better access to the capital that is available so that they can invest in productive assets • Financial markets also provide us with information about the returns that are required for various levels of risk

  7. Figure 12.4 – If you invested $1 in 1957, how much would you have in 2002?

  8. Average Returns 1957 – 2002 12.3

  9. Risk Premiums • The “extra” return earned for taking on risk • Treasury bills are considered to be risk-free • The risk premium is the return over and above the risk-free rate

  10. Average Returns and Risk Premiums1957 – 2002

  11. Historical Risk Premiums 1957 – 2002 • Canadian common stocks: 10.29 – 6.89 = 3.40% • US common stocks (C$): 12.85 – 6.89 = 5.96% • Long-term bonds: 9.01 – 6.89 = 2.12% • Small stocks: 13.31 – 6.89 = 6.42%

  12. Variance and Standard Deviation 12.4 • Variance and standard deviation measure the volatility of asset returns • The greater the volatility, the greater the uncertainty • Historical variance = sum of squared deviations from the mean / (number of observations – 1) • Standard deviation = square root of the variance

  13. Example – Variance and Standard Deviation Variance = .0045 / (4-1) = .0015 Standard Deviation = .03873

  14. Example (cont.) • Variance = σ² = 0.0045 / (4 -1) = 0.0015 • Standard Deviation = σ = (0.0015)^½ = 0.03873 • Var( R ) = σ² = [1 / (T-1)] [(R1 – E( R))² + (R2 - E( R))² +…+ (RT - E( R))² ] • Where Var( R ) and σ² represent alternative notations for variance, R1, R2, and RT are returns for each year, and T is the number of observations. The standard deviation is the square root of the variance, and is denoted as either SD( R ) or σ.

  15. Table 12.4 Historical Returns and Standard Deviations 1957 – 2002

  16. Figure 12.6 – Normal Distribution and a Portfolio of Large Common Stocks

  17. Normal Distribution • For many random events, the normal distribution (or bell curve) is useful for deriving the probability that the value of a variable falls within a certain range. • For example, if stock returns have a normal distribution, the probability that the return in a given year is within one standard deviation of the mean is about 68% or approximately 2/3. • The probability that the return is within two standard deviations of the mean is about 95%.

  18. Normal Distribution (cont.) • The probability that the return is within three standard deviations of the mean is about 99% (i.e., the probability of being more than three standard deviations away from the average is less than 1%). • Looking at the table for historical returns and standard deviation we see that the standard deviation of returns on Canadian common stocks is 16.41%. The average return is 10.29%. Assuming normal distribution, the probability that the return in a given year is in the range -6.12% (10.29% - 16.41%) to 26.7% (10.29% + 16.41%) is about two-thirds

  19. Figure 12.5 – Frequency distribution of Returns on Canadian Common Stocks

  20. Capital Market Efficiency 12.5 • Stock prices are in equilibrium or are “fairly” priced • If this is true, then you should not be able to earn “abnormal” or “excess” returns • Efficient markets DO NOT imply that investors cannot earn a positive return in the stock market

  21. Figure 12.7 – Reaction to New Information

  22. What Makes Markets Efficient? • There are many investors out there doing research • As new information comes to market, this information is analyzed and trades are made based on this information • Therefore, prices should reflect all available public information • If investors stop researching stocks, then the market will not be efficient

  23. Common Misconceptions about EMH • Efficient markets do not mean that you can’t make money • They do mean that, on average, you will earn a return that is appropriate for the risk undertaken and there is not a bias in prices that can be exploited to earn excess returns • Market efficiency will not protect you from wrong choices if you do not diversify – you still don’t want to put all your eggs in one basket

  24. Strong Form Efficiency • Prices reflect all information, including public and private • If the market is strong form efficient, then investors could not earn abnormal returns regardless of the information they possessed • Empirical evidence indicates that markets are NOT strong form efficient and that insiders could earn abnormal returns

  25. Semistrong Form Efficiency • Prices reflect all publicly available information including trading information, annual reports, press releases, etc. • If the market is semistrong form efficient, then investors cannot earn abnormal returns by trading on public information • Implies that fundamental analysis will not lead to abnormal returns

  26. Weak Form Efficiency • Prices reflect all past market information such as price and volume • If the market is weak form efficient, then investors cannot earn abnormal returns by trading on market information • Implies that technical analysis will not lead to abnormal returns • Empirical evidence indicates that markets are generally weak form efficient

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