--%>

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 : Explain method to analyze and to value

    Are there any methods to analyze and to value seasonal businesses?

  • Q : Define reasonable things that a company

    There are four methods a company can utilize the money this generates: a) Buying other assets or companies; b) Reducing debt of it; c) Distribute this to shareholders, and d) Increasing cash holdings of it.

  • Q : What are the different types of

    What are the different types of mathematics found in quantitative finance?

  • Q : Evaluating Beta of a Corporation

    Baldwin Corporation is planning to expand into the business of providing on-demand movies. Baldwin has debt-to-equity ratio of .25, its pretax cost of debt is 9%, and its marginal tax rate is 40%. The Harrington Corporation is already in the on-demand movie business,

  • Q : Minimum annual savings problem XYZ

    XYZ Company is interested in purchasing a new corporate jet for $6 million. This will depreciate the jet completely in 5 years and then sell it for $5 million. The jet will utilize $60,000 in fuel annually, and its maintenance will be $40,000 yearly. The tax rate of X

  • Q : Commercial bank problems For an

    For an enhanced understanding of banking industry, it is significant to look at the atmosphere in which commercial banks operate. Production growth and globalization are two main forces reshaping the banking industry nowadays. The following two questions are associate

  • Q : Problem on annual lease payments Taurus

    Taurus Corporation needs a computer, which it can buy for $100,000. Taurus will depreciate the computer uniformly over its useful life of 5 years. An investment tax credit of 7% is also available, and the computer will have no residual value. Taurus plans to borrow th

  • Q : Problem on sales collections The 2010

    The 2010 income statements of Leggett and Platt, inc. reports net sales of $4,076.1 million in 2010 and $4,250 million in 2009. The balance sheet reports accounts and other receivables, net of $550.5 million at December 31, 2010 and $640.2 million at December 31, 2009

  • Q : How present value of tax shields be

    I have two valuations of the company that we set as an objective. Within one of them, the present value of tax shields (D Kd T) computed using Ku (required return to unlevered equity) and, in one, by using Kd (required return to debt). The second valuation is too high

  • Q : FIN3000 Corporate Finance Task

    Task Description Length: 1000-2000 words (up to 500 words above 2000 permitted) Description: • Complete this assignment in groups of 4-5 students. • Maintain a portfolio of financial issues taken from 8 news sources. • Analyse the articles with reference to theory covered in class and highlig