Capital Asset Pricing Model (CAPM) – Definition, Formula and Calculation

The risk or variation in return of a security is caused by two types of factors. The first type of factors will affect the return of almost all securities in the market. Examples of such sources of risks are changes in the interest rates and inflation of the economy, movement of stock market index and exchange rate movement. The risk caused by such factors is known as systematic risk. Apart from systematic risk, the variation in return of a security is also caused by some other factors which are specific to a security, like a strike in a company or the caliber of the management of a company. The risk caused by such factors is known as unsystematic or specific risk. The unsystematic risk of a security can be diversified away by combining different securities into a portfolio. But systematic risk cannot be diversified away by the construction of a Continue reading

Treasury Bills and Inflation Control

Treasury Inflation-Protected Securities (or TIPS) are the inflation-indexed bonds issued by the RBI Treasury. These securities were first issued in 1997. The principal is adjusted to the Consumer Price Index, the commonly used measure of inflation. The coupon rate  is constant, but generates a different amount of interest when multiplied by the inflation-adjusted principal, thus protecting the holder against inflation. TIPS are currently offered in 5-year, 7-year, 10-year and 20-year maturities. 30-year TIPS are no longer offered. In addition to their value for a borrower who desires protection against inflation, TIPS can also be a useful information source for policy makers: the interest-rate differential between TIPS and conventional  Treasury bonds is what borrowers are willing to give up in order to avoid inflation risk. Therefore, changes in this differential are usually taken to indicate that market expectations about inflation over the term of the bonds have changed. The interest payments Continue reading

Defensive and Aggressive Securities

Defensive securities are kind of securities that exhibits less volatility than the market as a whole (i.e., its BETA is less than 1.0), providing lower, but more stable, returns. Investors often acquire defensive securities during periods of financial turmoil or uncertainty. Defensive securities tend to remain more stable in value than the overall market, especially when prices in general are falling. In times of market downturn, investors tend to seek defensive securities to provide a steady rate of return, or at least to lose less money than the market as a whole. Examples include stocks in utility companies and the health care industry. Defensive securities include stocks in companies whose products or services are always in demand and are not as price-sensitive to changes in the economy as other stocks. Aggressive in finance means relating to an investment or approach to investing that seeks above-average returns by taking above-average risks. Continue reading

An Overview of Indian Capital Market – History of Indian Capital Market

The capital market in India is a market for securities, where companies and governments can raise long term funds. It is a market designed for the selling and buying of stocks and bonds. Stocks and bonds are the two major ways to generate capital and long term funds. Thus, the bond markets and stock markets are considered as capital markets.   The Indian securities market consists of primary (new securities) market and secondary (stock) market in both equity and debt. The primary market provides channel for sale of new securities while the secondary market deals in trading of previously issued securities. The issuers of securities issue new securities in the primary market to raise funds for investment. They do either through the public issue or private placement. There are mainly two types of issuer who issue securities. The corporate entities mainly issue equity and debt instruments (Shares and debentures) while Continue reading

Bond Duration and Portfolio Immunization

Bond Duration Duration is a significant measurement of how sensitivity the change in price of a bond in the change of interest rate. It is broadly linked to the length of time before the bond is mature. Duration assists investors during the investment decision making process by expressing the relation between interest rate and price variables of the bond. Therefore, duration is useful measurement for investors because it protects investment from interest rate risk. When the duration of bond is lower that means investors can obtain the cash earlier and reinvest it at prevailing interest rate. As a result, the lower the duration of a bond, the lesser sensitive changes in the interest rate. Majority of investors are familiar with maturity which is the point of time when investors get back the principal of bond. However, duration is defined as the length of time before the maturity of the bond. Therefore, the Continue reading

Portfolio Revision Strategies in Investment Portfolio Management

Meaning of Portfolio Revision A portfolio is a mix of securities selected from a vast universe of securities. Two variables determine the composition of a portfolio; the first is the securities included in the portfolio and the second is the proportion of total funds invested in each security. Portfolio revision involves changing the existing mix of securities. This may be effected either by changing the securities currently included in the portfolio or by altering the proportion of funds invested in the securities. New securities may be added to the portfolio or some of the existing securities may be removed from the portfolio. Portfolio revision thus leads to purchases and sales of securities. The objective of portfolio revision is the same as the objective of portfolio selection, i.e. maximizing the return for a given level of risk or minimizing the risk for a given level of return. The ultimate aim of Continue reading