You own three stocks: 600 shares of Apple Computer, 10,000
shares of Cisco Systems, and 5,000 shares of Colgate-Palmolive. The
current share prices and expected returns of Apple, Cisco, and
Colgate-Palmolive are, respectively, $536, $25, $105 and 12%, 10%,
8%. a. What are the portfolio weights of the three stocks in your
portfolio? b. What is the expected return of your portfolio? c.
Suppose the price of Apple stock goes up by $30, Cisco rises by $5,
and Colgate-Palmolive falls...