# Portfolio optimization | Business & Finance homework help

i need this project done in the next 8hrs

a sample project is attached the data is different so dont copy

if wrongly done or late be sure i will dispute

bid only if you can handle

You will find an Excel workbook called AssignmentData.xlsx which is needed to

complete this assignment. It contains weekly index data for five asset classes and one

in-dividual asset (Gold).

Due to the reputation of “Education Institution of America” for producing work-ready

graduates, you are head-hunted by a small asset management company to work parttime

as a portfolio manager whilst you complete your degree.

It is your first day on the job and your boss is keen to see how much you really know. She

provides you with a list of five asset classes and tasks you and your team to investigate the

efficient asset allocation between these asset classes. Moreover, you are asked to satisfy a

17% expected return target on the portfolio you construct. To get started you decide to

collect historical performance data for the last five years in order to estimate the expected

return and variance-covariance structure of the asset classes (the data in the Excel file).

To perform the asset allocation you decide to construct a minimum variance portfolio. You

recall the 17% expected return target imposed by your boss and note that there was no

mention of short-selling constraints. In order to construct this portfolio you should copy the

assignment data into an Excel workbook and perform the following tasks/answer the

following questions:

1. (a) Transform the index values into simple weekly returns (you do not need to

report these in your submission).

(b) Using the returns data, estimate (and report) the vector of expected returns for

the five asset classes, as well as the variance-covariance matrix of these returns.

These expected returns etc. should be annualized (i.e., in annual units).

(c) Report which of the asset classes are efficient and which are inefficient. For each

of the inefficient asset classes, find another asset class that dominates it.

(d) Compute and report the parameters A, B, C and .

(e) Construct and plot the MVS (with short sales allowed) for expected (annual)

returns ranging between −10% and 35%. Your figure should also indicate the

positions of the five asset classes.

(f) Identify the global minimum variance portfolio (MVP), i.e. report the portfolio

weights (in the five asset classes), expected return, and variance of the MVP.

(g) Determine and report the portfolio weights for the efficient portfolio with 17%

expected return.

2

You are eager to impress so you send the results to your new boss just before you

leave for your lunch break. Upon your return, the boss has looked at your report and

notes that the risk of the portfolio is a little higher than she expected and wondered if

adding an additional asset would help reduce the risk. Knowing all about diversification,

you suggest that maybe adding an asset that has a low correlation with the existing five

asset classes might help. “Gold!”, your boss exclaims. You have heard many stories

about gold being a great diversifier and so you offer to do the analysis again with the

additional asset (gold) included in the portfolio. Using the additional gold index data in

the Excel spreadsheet, perform the following tasks:

2. (a) Using the same methodology as in Question 1 (simple returns etc.),

reconstruct the vector of (annual) expected returns and the variancecovariance

matrix for the five asset classes plus gold (i.e., six assets in total).

(b) Compute and report the new A, B, C and parameters.

(c) Construct and plot the new MVS (with short sales allowed) for expected (annual)

returns ranging between −10% and 35%. You should also plot the MVS from

1.(e) for comparison and indicate the positions of the five asset classes and gold.

(d) Identify the new global minimum variance portfolio (MVP), i.e. report the port folio

weights (in the six assets), expected return, and variance of the MVP.

(e) Determine and report the new portfolio weights for the efficient portfolio with

17% expected return.

(f) Calculate and report the reduction in risk of the 17% returning efficient

portfolio that can be achieved by adding gold to the portfolio.

You inform your boss of these findings and she is happy with the addition of gold to the

portfolio and the reduction in risk. However, she informs you that the 15% returning

portfolio you have constructed is not as ‘efficient’ as it might be as you have forgotten all

about the risk-free asset… oops! You quickly do some research and determine that the

appropriate risk-free rate to use is 1% per annum. Perform the following tasks to adjust

your portfolio weights:

3. (a) Construct and plot the MVS (with short sales allowed) for the five asset

classes and gold plus the risk-free asset paying 1%.

(b) Identify the tangency portfolio, i.e. report its portfolio weights, expected return,

and variance of returns. Furthermore, illustrate its tangency property

graphically by plotting the MVS from 2.(c) on the same set of axes.

(c) Determine and report the new portfolio weights for the efficient portfolio with

17% expected return.

(d) Calculate and report the reduction in risk of the 17% returning efficient

portfolio that can be achieved by adding the risk-free asset bond to the

portfolio of six risky assets.

3

A little embarrassed from your mistake of not including the risk-free asset, you send the new

updated results to your boss at 4:50pm. She is impressed with your efficiency as well as the

efficiency of the portfolio. However, she hasn’t quite finished with you just yet! She is

worried about the need to short sell certain asset classes in the currently proposed

portfolios. Many of the firm’s clients do not like, and some do not allow, short selling in their

portfolios. Therefore, your boss wants you to investigate the effect a no short sales

constraint will have on the MVS without a risk-free asset and any subsequent investment

decisions. To do this you are asked to perform the following tasks:

4. (a) Construct and plot the risky asset only MVS with no short sales allowed for

the five asset classes plus gold. (Recall you will need Solver to do this.)

(b) Plot the MVS for the unconstrained problem—found in 2.(c)—on the same set

of axes. Also, indicate the positions of the five asset classes plus gold.

(c) List the portfolio weights for all the data points used in constructing your no

short sales allowed graph.

(d) Identify and report the range of expected returns for which the short sales

con-straint is not binding.

(e) Discuss the compositions of the portfolios at the end-points of the MVS with

no short sales.

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