Chapter 9 – (10 marks, all multi response) The Performance Of Investments Flashcards
A common mistake people make with this chapter is to solely learn the mathematics. The reality is, that the exam questions often test your knowledge of what the calculations mean rather than the maths itself.
Remind what me what BETA is
What is the difference between performance measurement & performance evaluation and attribution.
Performance measurement = Calculating WHAT the return of the investment was over a given period
Performance evaluation and attribution =
HOW that return was achieved. Fund manager skills? Luck? etc
Performance measurement is about calculating WHAT the return of an investment is over a given period
What are the 2 main ways of measuring an investments performance?
Money Weighted Return
Time Weighted Return
The 2 main ways of measuring an investments performance (ie, ‘performance measurement’) is by using
Money Weighted Return
OR
Time Weighted Return
Tell me about using Money Weighted Return
Money Weighted Return = Measures the overall return on investment over a given period, taking into account money taken away or added during that time.
What is the Holding Period Return?
It is the return of an investment over a given period expressed as a percentage
It is the most simple calculation when measuring an investments performance
Tell me how to calculate the holding period return of an investment
How to calculate using Holding Period Return (HPR)
Take the value at the end (This includes any interest/dividends if applicable), minus the value at the start. This calculates the ‘gain’ of the investment.
Then, divide the gain by the value at the start, which gives a basic ‘percentage increase’, ie the HPR
I am measuring an investments performance. Read below and tell me what I am calculating:
I calculated the gain of the investment by taking the value at the end and subtracting that from the value at the start. I then divided the gain by the starting value of the investment. This then gave me the percentage increase of the investment.
Here I am calculating the Holding Period Return of the investment
What does Money Weighted Return take into account in relation to its calculation that the Holding Period Return doesn’t?
Money Weighted Return looks to calculate the same thing as the HRR but it also takes into account any money added or taken away during the given time period
It is more accurate than the HRR but is harder to calculate
For context. The main difference between Money Weighted Return & Holding Period Return
Same thing except MWR takes into account money taken and added to the investment
Tell me how to calculate the Money Weighted Return (MWR)
*Holding Period Return = HPR
Calculate ‘Gain’ (same as HPR except deduct any additional money invested or add any money withdrawn (C). This is because you want the gain only. remember this as being the opposite way around)
Then divide this by
Initial investment + (additional money as a ratio of how long it has been invested for)
= Money Weighted Return
I am measuring an investments performance over a given period. Read below and tell me what I am calculating:
I calculated the gain of the investment by deducting the value of money added during the investment period. I then divided this by the sum of the initial investment and the additional money added (as a ratio of how long that additional money was invested for)
Here I am calculating Money Weighted Return
When is using the Money Weighted Return calculation not appropriate?
MWR is not considered appropriate when trying to COMPARE performances of different portfolios
This is because MWR is strongly influenced by the timing of cash flows (ie, cash being added in and subtracted out during the period of the investment) This timing is outside of the fund manager’s control, and is often decided by the customer.
For example, A customer who adds money days before a rise in growth will show a much better return than a customer adding money days before a fall when using the MWR formula
Time-weighted return is therefore used to tackle this issue
The 2 main ways of measuring an investments performance (ie, ‘performance measurement’) is by using
Money Weighted Return
OR
Time Weighted Return
Tell me about how Time Weighted Return works and why it is used
WHY TWR is used: TWR is used to COMPARE performances of different portfolios (MWR is not an appropriate tool to do this when there are withdrawals and deposits at different times during the investment period)
TWR splits the investment into separate time periods where a new time period starts each time new money is introduced or a withdrawal is made. SEE IMAGE
What is the formula for Time Weighted Return?
This formula shows 2 time periods. Investments can have multiple withdrawals and deposits so there could be more than 2
V1 = value at the end
V0 = value at the start
C = cash introduced
V2 = value at the end of final period
Calculating Time Weighted Return in context
See formula:
V1 = value at the end
V0 = value at the start
C = cash introduced
V2 = value at the end of period
Remember: TWR splits the investment into separate time periods where a new time period starts each time new money is introduced or a withdrawal is made.
For questions that use multiple time period do first 2 time period, then do 2nd and 3rd time period like u did with 1st and 2nd, and so on and then multiple all answers together
More exam questions using Time Weighted Returns
This is a comparison style question and is more likely
NOTE: They have rounded it early on into the question so the final answer may be slightly different if you do it in one go on the calculator
For questions that use multiple time period do first 2 time period, then do 2nd and 3rd time period, and so on and multiple them all together
To summarise what we have learnt so far:
MWRs can be used to calculate a valid return for an individual portfolio, but it gives misleading results if it is used for comparative purposes.
TWRs are widely used for comparative purposes because they are not affected by the timing of cash flows and new money inflows.
What very important aspect of any investments performance do both weighted returns (TWR & MWR) not take into account at all?
These two weighted returns take no consideration of any risks taken.
Both weighted returns (TWR & MWR) take no consideration of the risks taken when looking at the investments performance
What can be used to do this instead?
NOTE: Performance ratios are used to evaluate risk, not to measure it like the formulas above measured performance by looking at returns.
There are 3 performance ratio. These are: SEE IMAGE
Each have respective formulas