--%>

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 : Iterative System Solvers Iterative

    Iterative System Solvers, Power Methods, and the Inverse Power Method for Boundary Value Problems. 1. Code and test Jacobi and Gauss-Sidel solvers for arbitrary diagonally dominant linear systems. 2. Compare performance/results with tridiagonal Gaussian elimination so

  • 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 : Which model was great breakthrough for

    Which one model was great breakthrough for side of finance theory?

  • Q : Who was the first to quantify the idea

    Who was the first to quantify the idea of Brownian motion?

  • Q : Who proposed modern quantitative

    Who proposed a modern quantitative methodology for portfolio selection?

  • Q : Define Economy Impacts Economy Impacts

    Economy Impacts: An upcoming economy is indicated by rise in stock market, as stock market is primary indicator of a economic strength of a country. Progressing economy results in market boom. Yield of companies’ increases on improving economy,

  • Q : Assignment help for Financial Statement

    HW I: Show your approach to each problem (formulas, variables, etc.) You can use Excel sheet formulas to show the work or use the Finance calculator terms. For the ABC answers: choose the correct answer and delete the rest.

  • Q : Estimate stock's current price A

    A company currently pays a dividend of $3.75 per share, D0 = 3.75. It is estimated that the company's dividend will grow at a rate of 15% percent per year for the next 2 years, then the dividend will grow at a constant rate of 7% the

  • Q : Problem on annual mortgage payment You

    You just took out a variable-rate mortgage on your new home. The mortgage value is $100,000, the term is 30 years, and initially the interest rate is 8%. The interest rate is fixed for 5 years, after which the time rate will be adjusted according to the prevailing rat

  • Q : Valuation & Merger analysis Problem

    Problem 21-1 Valuation Harrison Corporation is interested in acquiring Van Buren Corporation. Assume t