1 / 26

Chapter 6

Chapter 6. SECURITY-MARKET INDEXES. Chapter 7 Questions. What are some major uses of security-market indexes? What are the major characteristics that cause various indexes to differ?

nasim-farley
Download Presentation

Chapter 6

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 6 SECURITY-MARKET INDEXES

  2. Chapter 7 Questions • What are some major uses of security-market indexes? • What are the major characteristics that cause various indexes to differ? • What are the major stock-market indexes in the United States and globally, and what are their characteristics? • What are the major bond-market indexes for the United States and the world? • Why are bond indexes more difficult to create and maintain than stock indexes? • What are some of the composite stock-bond market indexes? • Where can you get historical and current data for all these indexes? • What is the relationship among many of these indexes in the short-run (monthly)?

  3. What is a market index? • An index created as a statistical measure of the performance of an entire market or segment of a market based on a sample of securities form the market or segment of a market. • It is an indicator that answers the question: What happened in the market today?

  4. Uses of Security-Market Indexes • For calculating benchmark returns to judge portfolio performance • For development of an index portfolio • For examining factors that influence aggregate security price movements • For technical analysis, to predict future price movements • As a proxy for the market portfolio of risky assets when calculating the systematic risk of an asset

  5. Factors in Constructing Market Indexes • The sample of firms to include • What is the intended population that the sample is to represent? How large a sample is needed for the index to be representative? • Weighting system for sample members • Should the weighting system be based on price, total firm value, or equally weighted? • Computational procedure • How should the values of the index be reported and tracked (arithmetic or geometric mean)?

  6. Stock-Market Indexes • Price-Weighted Indexes • Dow Jones Industrial Average (DJIA) • Value-Weighted Indexes • NYSE Composite • S&P 500 Index • Russell Indexes • Willshire 5000 Index • Equal-Weighted Indexes • Value Line Averages

  7. Dow Jones Industrial Average (DJIA) • Best-known, oldest, most popular index • Price-weighted average of thirty large well-known industrial stocks, leaders in their industry, and listed on NYSE • Total the current price of the 30 stocks and divide by a divisor • Original divisor was 30 • Divisor now adjusted for stock splits and changes in the sample, so now much smaller (about 0.1356 in October 2004)

  8. Criticism of the DJIA • Sample used is limited • 30 non-randomly selected blue-chip stocks are not representative of the 1800 NYSE listed stocks • Price-weighted series • Places more weight on higher-priced stocks rather than those with higher market values • Introduces a downward bias in DJIA by reducing weight of growing companies whose stock splits

  9. Value-Weighted Indexes • Although the DJIA is the most popular index, the most popular type is value-weighted. • Derive the initial total market value of all stocks used in the series Market Value = Number of Shares Outstanding x Current Market Price • Beginning index value is usually 100, new market values change the value of the index

  10. Value-Weighted Indexes where: Indext = index value on day t Pt = ending prices for stocks on day t Qt = number of outstanding shares on day t Pb = ending price for stocks on base day Qb = number of outstanding shares on base day

  11. Value-Weighted Indexes • Automatic adjustment for splits • Weighting depends on market value • Construction similar to assuming investment in proportion to total market value • Take into account that large market value stocks make up more of the market than do smaller market value stocks • Large market value stocks dominate the impact on index values over time • Also these series tend to be more broad than the DJIA

  12. Unweighted Price Indexes • All stocks carry equal weight regardless of price or market value • Constructed in a parallel fashion to individuals who select stocks and invest the same dollar amount in each stock • Changes in the index can be reported either in terms of arithmetic or geometric means

  13. Style Indexes • Additional indexes have been created that seek to measure the performance of various investment styles or sectors • Size indexes track the performance of large-cap, mid-cap, and small cap stocks • Other indexes track the relative performance of growth and value stocks, perhaps also broken down into sizes

  14. stats hs300 sfz szy snb porfolio mean .0030804 .0037214 .0045365 .0010742 .0031718 sd .0175665 .0299458 .0309206 .0407499 .0194515 2005.4.8-2007.9.18

  15. Global Equity Indexes • There are stock-market indexes available for most individual foreign markets • These are closely followed within each country • These are difficult to compare due to differences in sample selection, weighting, or computation • In response, some standardized indexes have been developed • FT/S&P Actuaries World Indexes • Morgan Stanley Capital International (MSCI) World Indexes • Dow Jones World Stock Index

  16. FT/S&P-Actuaries World Indexes • Track over 2,400 securities in 30 countries • Covers 70% of the total value of all listed companies in each country • Securities included must allow direct holdings of shares by foreign nationals • Index is market-value weighted with a base date of December 31, 1986 = 100 • Results are calculated daily and published the following day in the Financial Times • Geographic subgroups are also published

  17. MSCI Indexes • Three international, nineteen national, and thirty-eight international industry indexes • Include 1,673 companies listed on stock exchanges in 19 countries with a combined capitalization representing 60 percent of the aggregate market value of the stock exchanges of these countries • All the indexes are market-value weighted

  18. Dow Jones World Stock Index • Introduced in January 1993 • Includes 28 countries with a total of 2,200 companies worldwide, organized into 120 industry groups • Countries are grouped into 3 regions • Represents over 80% of the combined capitalization of these countries

  19. Comparison of World Stock Indexes • Correlations between all of the pairs of broad world indexes are nearly 1.00, indicating that the results with the alternative world stock indexes are quite comparable

  20. Bond-Market Indexes • Relatively new and not widely published • Growth in fixed-income mutual funds increase need for reliable benchmarks for evaluating performance • Increasing interest in bond index funds, which requires an index to emulate • Many managers have not matched aggregate bond market return

  21. Difficulties in Creating a Bond-Market Index • Range of bond quality varies from U.S. Treasury securities to bonds in default • Bond market changes constantly with new issues, maturities, calls, and sinking funds • Bond prices are affected differently by changing interest rates dependent on maturity, coupon, and market yield • Correctly pricing individual bond issues can be a challenge without current and continuous transaction prices available

  22. Bond Market Indexes • Investment-Grade Bond Indexes • Four investment firms maintain indexes for Treasury bonds and other investment grade bonds (rated BBB or higher) • Relationship among these bonds is strong (correlations average 0.95) • High-Yield Bond Indexes • Non investment-grade bonds (rated BB or below) • Several indexes have been created • Relationship among alternative high-yield indexes is weaker than among investment grade indexes

  23. Bond Market Indexes • Global Government Bond Market Indexes • Global bond market dominated by government issues • Several indexes created by major investment firms • Indexes have similar characteristics

  24. Composite Stock-Bond Indexes Considers the benefits of diversification with asset allocation across stocks and bonds • Merrill Lynch-Wilshire U.S. Capital Markets Index (ML-WCMI) • Market-value weighted index measures total return performance of the combined U.S. taxable fixed income and equity markets • Brinson Partners Global Security Market Index (GSMI) • Matches a typical U.S. pension fund allocation policy • Close to the theoretical “market portfolio of risky assets” referred to in CAPM

  25. Comparison of Indexes Over Time • Correlations among monthly equity price changes • Most differences are attributable to sample differences • High correlations between S&P 500 and several broad stock market indexes (.98-.99) • Lower correlations between style indexes and other broader indexes • Correlations between U.S. series and other countries confirm the wisdom of global investing since values are often much lower

  26. Comparison of Indexes Over Time • Correlations among monthly bond indexes • Among investment-grade bonds correlations range from 0.94 to 0.98 • Significantly lower correlation between investment grade and high-yield indexes (about 0.49) • Low correlation in global returns to U.S. returns (about 0.35) support global diversification

More Related