Formula to Calculate the Return of Total Portfolio
Portfolio return formula is used in order to calculate the return of the total portfolio consisting of the different individual assets where according to the formula portfolio return is calculated by calculating return on investment earned on individual asset multiplied with their respective weight class in the total portfolio and adding all the resultants together.
Portfolio return can be defined as the sum of the product of investment returns earned on the individual asset with the weight class of that individual asset in the entire portfolio. It represents a return on the portfolio and just not on an individual asset.
The expected return can be calculated with a product of potential outcomes (i.e. returns which is represented by r in below) by the weights of each asset in the portfolio (i.e. represented by w), and after that calculating the sum of those results.
Where ∑ni=1 wi = 1
- w is the weight of each asset
- r is the return of an asset
Calculation of Portfolio Return (Step by Step)
The calculation of the portfolio return is quite simple but requires little attention.
- Step 1: Get the individual asset return in which the funds have been invested in. For example, if an investor has invested in equity then one needs to calculate the entire return that is total return including the interim cash flows which in case of equities it would be a dividend.
- Step 2: Calculate the weights of the individual asset in which funds are invested. This can be done by dividing the invested amount of that asset by total fund invested.
- Step 3: Take the product of return that is calculated in step1 with weight which is calculated in step2.
- Step 4: The third step will be repeated until the calculations of all the assets are completed. Then finally we need to add up the product of all the individual asset returns by its weight class which shall be the portfolio return.
Examples
Example #1
Consider ABC ltd an asset management company has invested in 2 different assets along with their return earned last year. You are required to earn a portfolio return.
Solution:
We are given the individual asset return and along with that investment amount, therefore first we will find out the weights as follows,
- Weight (Asset Class 1) = 1,00,000.00 / 1,50,000.00 =0.67
Similarly, we have calculated the weight of Asset Class 2
- Weight (Asset Class 1) = 50,000.00 / 1,50,000.00 =0.33
Now for the calculation of portfolio return, we need to multiply weights with the return of the asset and then we will sum up those returns.
- WiRi (Asset Class 1) = 0.67*10% =6.67%
similarly, we have calculated WiRi for Asset class 2
- WiRi (Asset Class 2) = 0.33*11%
- =3.67%
Calculation of portfolio return is as follows,
Portfolio Return
The portfolio return will be 10.33%
Example #2
JP Morgan chase one of the largest investment banking firms has done several investments in various asset classes. Mr. Dimon the company chairman is interested in knowing the returns on the overall investment done by the firm. You are required to calculate the Portfolio Return.
Solution:
We are here only given the latest market value and there are no returns given directly. Hence, first, we need to calculate Return on individual assets.
We need to subtract the investment amount from market value to arrive at excess return and then dividing the same by investment amount will yield our returns on the individual asset.
Note: For detail Calculation please refer to the excel template.
We now have the individual asset return and along with that investment amount and now we will find out the weights using investment amount and not the market value as follows,
Weight of Equities = 300000000 / 335600000 = 0.3966
Similarly, we have calculated the weight of all the other particulars.
Now for the calculation of portfolio return, we need to multiply weights with the return of the asset and then we will sum up those returns.
Calculation of portfolio return is as follows,
Portfolio Return
Hence the portfolio return earned by JP Morgan is 21.57%
Example #3
Gautam is an individual who has recently started investing in the market. He has invested in XYZ stock for 100,000 and it has been a year and since then he has received a dividend of 5,000 and the current market value of XYZ stock is trading at a premium of 10%. Also, he has invested in a fixed deposit for 20,000 and the Bank provides a 7% return on it. And lastly, he has invested in land in his hometown for 500,000 and the current market value is 700,000. He has approached you to calculate portfolio return.
Solution:
We are here only given the latest market value and there are no returns given directly. Hence, first, we need to calculate Return on individual assets.
We need to subtract the investment amount from market value to arrive at excess return and then dividing the same by investment amount will yield our returns on the individual asset.
Note: For detail Calculation please refer to the excel template.
We now have the individual asset return and along with that investment amount and now we will find out the weights using investment amount and not the market value.
- Weight (XYZ Stock) = 1,00,000 / 6,20,000 = 0.1613
Similarly, we have calculated the weight for other particular as well.
Now for the calculation of portfolio return, we need to multiply weights with the return of the asset and then we will sum up those returns.
(XYZ Stock) WiRi = 0.15 * 0.1613 = 2.42%
Similarly, we calculated WiRi for other particular as well.
Calculation of portfolio return is as follows,
Portfolio Return
Hence the portfolio return earned by Mr. Gautam is 35.00%
Relevance and Use
It is crucial to understand the concept of the portfolio’s expected return formula as the same will be used by those investors so that they can anticipate the gain or the loss that can happen on the funds that are invested by them. Based on that expected return formula an investor can make a decision as to invest in an asset given their probable returns.
Further, an investor will also be able to decide on the asset’s weight in a portfolio i.e. what proportion of the funds should be invested and then do the required change.
Also, an investor can make use of the expected return formula for ranking the individual asset and further eventually can invest the funds per the ranking and then finally include them in his portfolio. In other words, he would increase the weight of that asset class whose expected return is higher.
Recommended Articles
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