cheered on. Nonetheless, Bay Street does encourage corporations to takes actions to create value,
even if such actions involve layoffs.
10. Earnings contain information about recent sales and costs. This information is useful for projecting
future growth rates and cash flows. Thus, unexpectedly low earnings often lead market participants
to reduce estimates of future growth rates and cash flows; price drops are the result. The reverse is
often true for unexpectedly high earnings.
Solutions to Questions and Problems
NOTE: All end of chapter problems were solved using a spreadsheet. Many problems require multiple
steps. Due to space and readability constraints, when these intermediate steps are included in this
solutions manual, rounding may appear to have occurred. However, the final answer for each problem is
found without rounding during any step in the problem.
1. The portfolio weight of an asset is total investment in that asset divided by the total portfolio value.
First, we will find the portfolio value, which is:
Total value = 70($40) + 110($22) = $5,220
The portfolio weight for each stock is:
WeightA = 70($40)/$5,220 = .5364
WeightB = 110($22)/$5,220 = .4636
2. The expected return of a portfolio is the sum of the weight of each asset times the expected return of
each asset. The total value of the portfolio is:
Total value = $1,200 + 1,900 = $3,100
So, the expected return of this portfolio is:
E(Rp) = ($1,200/$3,100)(0.11) + ($1,900/$3,100)(0.16) = .1406 or 14.06%
3. The expected return of a portfolio is the sum of the weight of each asset times the expected return of
each asset. So, the expected return of the portfolio is:
E(Rp) = .50(.11) + .30(.17) + .20(.14) = .1340 or 13.40%
4. Here we are given the expected return of the portfolio and the expected return of each asset in the
portfolio, and are asked to find the weight of each asset. We can use the equation for the expected
return of a portfolio to solve this problem. Since the total weight of a portfolio must equal 1 (100%),
the weight of Stock Y must be one minus the weight of Stock X. Mathematically speaking, this
E(Rp) = .122 = .14wX + .09(1 – wX)
We can now solve this equation for the weight of Stock X as:
.122 = .14wX + .09 – .09wX