Diversification of Risk in Portfolio Management

Average investors are risk averse. Therefore, they will be ready to invest into securities under the presumption of an adequate compensation for risk taking. The compensation for the risk taken should be in the form of minimal rate of return for the invested financial assets, and the rate is named the required rate of return. It has two components:

  • Delayed consumption compensation (investors could have purchased goods and services with the assets they are to invest) and
  • Risk acceptance compensation.

Diversification is used to stabilize the potential return, and thus increase the value of the investment. Diversification stands for he investment of capital into several different securities or projects, all together called the portfolio.… Read the rest

Different Types of Stock Beta

Beta coefficient is a comparative measure of how the stock performs relative to the market as a whole.  It is determined by plotting the stock’s and market’s returns at discrete intervals over a period of time and fitting (regressing) a line through the resulting data points. The slope of that line is the levered equity beta. When the slope of the line is 1.00, the returns of the stock are no more or less volatile than returns on the market. When the slope exceeds 1.00, the stock’s returns are more volatile than the market’s returns.  The beta coefficient is a key component for the  Capital Asset Pricing Model  (CAPM), which describes the relationship between risk and expected return  and  that is used in the pricing of risky securities.… Read the rest

The Role of Portfolio Management in an Efficient Market

You have learned that a basic principle in portfolio management is the  diversification of securities. Even if all stocks are priced fairly, each still poses firm-specific risk that can be eliminated through diversification. Therefore, rational security selection, even in an efficient market, calls for the selection of a well-diversified portfolio, providing the systematic risk level that the investor wants. Even in an efficient market investors must choose the risk-return profiles they deem appropriate.

The efficient market hypothesis (EMH) states that a market is efficient if security prices immediately and fully reflect all available relevant information.   If the market fully reflects information, the knowledge of that information would not allow an investor to profit from the information because stock prices already incorporate the information.  … Read the rest

Modern Portfolio Theory – Markowitz Portfolio Selection Model

Markowitz Portfolio Theory

Harry Markowitz developed a theory, also known as Modern Portfolio Theory (MPT) according to which we can balance our investment by combining different securities, illustrating how well selected shares portfolio can result in maximum profit with minimum risk. He proved that investors who take a higher risk can also achieve higher profit. The central measure of success or failure is the relative portfolio gain, i.e. gain compared to the selected benchmark.

Modern portfolio theory is based on three assumptions about the behavior of investors who:

  • wish to maximize their utility function and who are risk averse,
  • choose their portfolio based on the mean value and return variance,
  • have a single-period time horizon.
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Investments when entire Stock Market is Under or Over Valued

Should management proceed with investing in a project with a satisfactory NPV (Net Present Value) if it has sufficient funds to do so, and if (a) the entire stock market is significantly undervalued and may well rise by 25 or 30% over the next year, or (b) the entire stock market is significantly overvalued and may well fall by 25 or 30% over the next year?

In case (a), it could be argued that management should postpone the investment for a year, and invest the cash in a general portfolio of shares, realize them after a year, then take up the postponed investment, and use the capital gain either for future investment or a special dividend payment to shareholders.… Read the rest

The Cost of Equity Capital

Firms may raise equity capital internally by retaining earnings. Alternatively, they could distribute the entire earnings to equity shareholders and raise equity capital externally by issuing new shares. In both cases, shareholders are providing funds to the firms to finance their capital expenditures. Therefore, the equity shareholders required rate of return will be the same whether they supply funds by purchasing new shares or by foregoing dividends which could have been distributed to them. There is, however, a difference between retained earnings and issue of equity shares from the firm’s point of view. The firm may have to issue new shares at a price lower than the current market price.… Read the rest