- Exercise 2 An investor who maximizes a linear mean-variance utility, U(µp, σp) μpaσ, optimally invests half of her wealth in asset 1, having expected re- turn μ₁ = 10% and standard deviation σ1 10%, and half of her wealth in a risk-free asset, having return FR = 4%. = (a) Find the efficient frontier and represent it in the plane (σp, μP) (assuming that the investor feasible portfolios can include a short position in the risk- free asset). (b) Find the risk-aversion parameter a of the investor. (c) Using the same efficient frontier, for which levels of risk-aversion parameter the investor has a negative position in the risk-free asset? =

Can you have an investment with DCFRR > MARR, but NPV $0 (calculating NPV with iTyM=MARR)? Can you have an investment with DCFRR < MARR, and NPV < $0 (calculating NPV with iTyM=MARR)?

Suppose the utility function is U = E(r) - 0.5Ao2. Draw the indifference curve corresponding to a utility level of 0.2 for an investor with a risk aversion coefficient of 3. Please note the vertical line indicates expected return, and plot standard deviation on the horizontal line.

Example 3 Inns oont alafrA Following Example 2, consider a porfolio with three assets S1, S2 and S3 which have expected rates of return 0.1,0.15 and 0.2 respectively, and variance-covariance matrix odni tanoma bszt a aitevi ot botoly 0.1 0.1 -0.1 0.1 0.2 0.1 ololles V = -0.1 0.1 0.6 vo ) isaas sod slais a at gaiteoo ottg ndi oda vodT (aldanoitesup als ot-lais wod ibuadala abnod on a) What is the optimal portfolio when up = worod of sidad = 0.2. adt yhalinie ini ba moe ja SOLUTION lo ano ot b) Use this piece of information and the earlier optimal portfolios from la aao e. Example 2 to find the quadratic equation relating of and up. ni bstni sd SOLUTION tar oad o bo s e) Hence draw a plot of the solutions, and identify the frontier port- Ldon to slar folios. it SOLUTION ods Btvni gatela dt

The expected rate of return of an investment ________. a. equals one of the possible rates of return for that investment b. equals the required rate of return for the investment c. is the mean value of the probability distribution of possible returns d. is the median value of the probability distribution of possible returns e. is the mode value of the probability distribution of possible returns

6. On the basis of the utility formula below, which investment would you select if you were risk averse with A = 4? Standard Expected return E(t) deviation Investment 0.12 0.30 0.15 0.50 0.21 0.16 0.24 0.21

There are two assets 1 and 2, with returns X and Y correspondingly. Return X is a random variable with mean 1 and variance 1; return Y is a random variable with mean 1 and variance 3. We know that the expectation of X*Y is equal to 0. Find the share of asset 1 in the risk-minimizing portfolio.

The SML implies​ that if you could find an investment with a negative​ beta, its expected return, E(k), would be: E(k) < 0 E(k) < k f 0 < E(k) < k f kF < E(k) < E(kM)

Supposing the return from an investment has the following probability distribution   Return   Probability     R (%)   8                 0.2   10               0.2   12               0.5   14               0.1   Required: What is the expected return of the investment? What is the risk as measured by the standard deviation of  expected returns?

Suppose the gain from an investment is a normal random variable with mean 2 and standard deviation1.25. Compute the VaR for this investment.