Investment Answer Sheet

Topics: Capital asset pricing model, Risk in finance, Modern portfolio theory Pages: 25 (9593 words) Published: January 4, 2013
iExaminers’ commentaries 2011

Examiners’ commentaries 2011
23 Investment management Important note
This commentary reflects the examination and assessment arrangements for this course in the academic year 2010–11. The format and structure of the examination may change in future years, and any such changes will be publicised on the virtual learning environment (VLE).

Specific comments on questions – Zone A
Candidates should answer FOUR of the following EIGHT questions. All questions carry equal marks. Question 1 (a) List two recent financial innovations, as described in the subject guide, and explain to what perceived problem they provide the solution. [7 marks] Reading for this question To prepare for this question you should read Chapter 3 in the subject guide, in particular the section on recent financial innovations. Approaching the question A good answer will review two financial innovations, e.g. the floating-rate debt innovation and the zero coupon bond innovation, and look at the reason why these instruments were a success initially (why investors believed they could perform a useful role) and why they later became standardised (in the case of zero coupon bonds, for instance, the initial tax-motive for trading zero coupon bonds became eliminated through changes in the tax-code, but they continued to be a success because of the flexibility they offered to investors following certain investment and risk-management strategies). Weak or satisfactory answers will typically simply review the mechanics of how these instruments work, whereas a good answer will go deeper to cover how these instruments work within a larger context – by highlighting how these instruments offer benefits to the investors (as explained above). Learning outcomes The key learning outcomes here are to ‘broadly identify established examples of financial innovations and their fundamental characteristics’ and ‘discuss the main benefits financial innovations provide to investors’.


23 Investment management

(b) There are three bonds A, B, and C, each with nominal capital 1,000 and trading at par value. You will also find the following information about the bonds. Bond A B C Annual coupon interest rate 4.9% 5.0% 5.1% Maturity 1 year 2 years 3 years

Work out the yield to maturity for the three bonds, and the 1-year and 2-year spot rates. [9 marks] Reading for this question The main readings here can be found in Chapter 7 in the subject guide, in particular the section labelled ‘Bond math’. Approaching the question A good answer will distinguish between yield to maturity (which is the property of individual bonds) and spot rates (which is the property of the various points in time). Here, the candidates can make use of the fact that for bonds that trade at par value, the yield to maturity is exactly equal to the coupon rate of the bond. Therefore, the yield to maturity for the bonds are 4.9%, 5.0% and 5.1% respectively for A, B, and C. The spot rates for years 1 and 2 can be worked out using a standard calculator (but not for year 3 since this involves taking a cube root). For year 1 the spot rate must be equal to the yield to maturity for bond A, since this is a one-year bond (otherwise the bond would be discounted differently from the other bonds in the market). Therefore, the only real calculation involves the spot rate for year 2. We know that this satisfies the equation 5 105 100 = + , 1.049 (1 + r)2 which corresponds to r = 5.003%. Weak or satisfactory answers would confuse the two terms, and also probably not recognise the fact that for bonds trading at par value, the coupon rates and the yield to maturity are identical. Learning outcomes The key outcome is to ‘formally relate the concepts of yield to maturity, spot rates, and forward rates’ (although forward rates don’t appear in this particular question). (c) Work out the duration and convexity for bond C above. [9 marks] Reading for this question You can find the relevant readings in Chapter...
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