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FromTheMoon [43]
3 years ago
14

A portfolio management organization analyzes 60 stocks and constructs a mean-variance efficient portfolio using only these 60 se

curities.How many estimates of expected returns, variances, and covariances are needed to optimize this portfolio?If one could safely assume that stock market returns closely resemble a single-index structure, how many estimates would be needed?
Business
1 answer:
ser-zykov [4K]3 years ago
5 0

Answer:

In a single index model:

ri - rf = α i + β i (r M - rf ) + e i

Equivalently, using excess returns:

R i = α i + β i R M + e i

The variance of the rate of return can be decomposed into the components:

The variance due to the common market factor

Bi^2stdvm^2

The variance due to firm specific unanticipated events

STDV^2(ei)

In this model

Cov(ri,rj) =BiBjSTDV

The number of parameter estimates is:

n = 60 estimates of the mean E(ri )

n = 60 estimates of the sensitivity coefficient β i

n = 60 estimates of the firm-specific variance σ2(ei )

1 estimate of the market mean E(rM )

1 estimate of the market variance

Therefore, in total, 182 estimates.

The single index model reduces the total number of required estimates from 1,890 to 182. In general, the number of parameter estimates is reduced from:

(n^2 +3n / 2) to (3n+2)

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iren [92.7K]

STEM is Science, Tech, Engineering, and Math

7 1
3 years ago
Read 2 more answers
Advertising department expenses of $26,700 and purchasing department expenses of $46,700 of Cozy Bookstore are allocated to oper
allochka39001 [22]

Answer:

The advertising department expense allocated to each department are as follows:

Books Dept = $11,748

Magazines Dept = $8,010

Newspapers Dept = $6,942

Totals advertising department expenses allocated = $26,700

The purchasing department expenses allocated to each department are as follows:

Books Dept = $20,081

Magazines Dept = $10,741

Newspapers Dept = $15,878

Total purchasing department expenses allocated = $46,700

Explanation:

Note: See the attached excel for the completed table used in allocating the expenses of the two service departments (advertising and purchasing) to the three operating departments.

From the attached excel, the advertising department expense allocated to each department are as follows:

Books Dept = $11,748

Magazines Dept = $8,010

Newspapers Dept = $6,942

Totals advertising department expenses allocated = $26,700

From the attached excel, the purchasing department expenses allocated to each department are as follows:

Books Dept = $20,081

Magazines Dept = $10,741

Newspapers Dept = $15,878

Total purchasing department expenses allocated = $46,700

Download xlsx
7 0
3 years ago
"_____ are groups of concerned citizens who band together to try to influence the business practices of specific industries, bus
Nastasia [14]

Advocacy groups are groups of concerned citizens who band together to try to influence the business practices of specific industries, businesses, and professions.

Explanation:

Advocacy groups are important components of consumer rights in the capitalistic market and are essential for maintaining good business practices in the capitalistic society where competition can take a hold over the moral situation that should in  a sense dominate.

The advocacy groups that work this way are the ones who are a group of concerned citizens who band together to try to influence the business practices of specific industries, businesses, and professions. This is important for consumer rights for this sector to be strong.

5 0
2 years ago
Which of the following can result from inflation in the United States?
Semenov [28]

Answer:

b. Investors buy products in other countries.

Explanation:

Inflation causes higher cost of production for manufacturer which then charge high cost for the products. Thus, if there is inflation in US, product cost will skyrocket thus companies will buy products from other countries where the product might be at a cheaper cost.

4 0
2 years ago
Patterson Co. is considering a project that has the following cash flow and cost of capital (r) data. What is the project's NPV?
diamong [38]

Answer:

NPV= $60.52

Explanation:

Giving the following information:

Robbins Inc. is considering a project that has the following cash flow: −$950 $500 $400 $300

Cost of capital= 10.00%

To calculate the net present value we need to use the following formula:

NPV= -Io + ∑[Cf/(1+i)^n]

Cf= cash flow

For example= Year 3: 300/1.10^3= 225.39

NPV= $60.52

8 0
3 years ago
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