--%>

Additive risk in the CAPM

Suppose that the two securities APPL and MSFT account for the entire large cap technology component of the S&P 500 (hypothetically – of course – there are really plenty of others). Further, suppose that their weights in the S&P index were as follows:

1988_capm.jpg

So that, for example, AAPL makes up 3% of the index since its weight is 0.03. [These weights are hypothetical – actual weights are computed based on the current market capitalization of each company included in the index, so they change all the time]

a. What fraction of the total portfolio is this large cap technology sector?
b. What is the beta of this large cap technology sector?
c. If the S&P 500 is the market portfolio, what is its beta?
d. What is the beta of the remaining stocks in the S&P (consider these as a single sector)?

   Related Questions in Corporate Finance

  • Q : Liquidity Ratios Liquidity Ratios :

    Liquidity Ratios: Such ratios comprise the Current Ratio and the Quick Ratio or the acid test ratio. Liquidity ratios demonstrate the Liquid position of a company in the short term that is the capability of a firm to pay its obligations in short term.

  • Q : Explain Straddle and Strangle Straddle

    Straddle & Strangle: In the case of shorting butterfly spread, it can be seen that the gains are limited. However, there exists another strategy known as straddle which produces unlimited gains. This strategy benefits when the trader expects that

  • Q : Real estate problem Eric Rowan is

    Eric Rowan is planning to buy a house for $155,000 by borrowing money at the rate of 9%. He expects to rent the house for 5 years, collecting $20,000 annual rent in advance each year. He thinks that he can sell the house for $175,000 after five years. Fulton has incom

  • Q : Who proposed modern quantitative

    Who proposed a modern quantitative methodology for portfolio selection?

  • Q : Analysis on Stock Prices Using the last

    Using the last 3 years of closing stock prices on the first trading day of each month from January,  2010 through December 2012 for Apple (APPL) and the S&P 500 (market) for the same date range 1)    &n

  • Q : Explain influences of financial

    Does financial leverage (i.e. debt) have any influence on the Free Cash Flow, upon the Cash Flow to Shareholders, upon the growth of the company and upon the value of the shares?

  • Q : Illustrates the Gordon and Shapiro

    What is the importance and the utility of the given formula: Ke = DIV(1+g)/P + g?

  • Q : Explain company creates value for its

    Is this true that a company creates value for its shareholders in a year when this distributes dividends or when the quotation of the shares increases?

  • Q : What is Net Operating Profit after Tax

    What is Net Operating Profit after Tax (NOPAT)?

  • Q : Problem on common stock The AB Corp

    The AB Corp stock has a β of 1.15 and it will pay a dividend of $2.50 next year. The expected rate of return of the market is 17% and the current riskless rate is 9%. The expected rate of progress of AB is 4%. Find the value of its common stock.