Fundamentals of Financial Instruments. Sunil K. Parameswaran
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СКАЧАТЬ cubed EndFraction plus StartFraction 7 comma 000 Over left-parenthesis 1.039230 right-parenthesis Superscript 4 Baseline EndFraction equals dollar-sign 13 comma 359.1103"/>

      Similarly, the future value will then be given by

StartLayout 1st Row 1st Column normal upper F period normal upper V period 2nd Column equals 2 comma 000 times left-parenthesis 1.039230 right-parenthesis cubed plus 2 comma 500 times left-parenthesis 1.039230 right-parenthesis squared plus 3 comma 500 times left-parenthesis 1.039230 right-parenthesis plus 7 comma 000 2nd Row 1st Column Blank 2nd Column equals dollar-sign 15 comma 582.0372 EndLayout

      The present value is higher when we use an effective annual rate of 8% for discounting. This is because the lower the discount rate, the higher will be the present value; obviously, an effective annual rate of 8% is lower than a nominal annual rate of 8% with semiannual compounding. Because the interest rate that is used is lower, the future value at the end of four half-years is lower when we use an effective annual rate of 8%.

      Kapital Markets is offering an instrument that will pay $25,000 after four years in return for an initial investment of $12,500. Alfred is a potential investor, who requires a rate of return of 12% per annum. The issue is, is the offer attractive from his perspective? There are three ways of approaching this problem.

      The Future Value Approach

      Let us assume that Alfred buys this instrument for $12,500. If the rate of return received by him were to be 12%, he would have to receive a future value of $19,669. This can be stated as:

normal upper F period normal upper V period equals 12 comma 500 times left-parenthesis 1.12 right-parenthesis Superscript 4 Baseline equals dollar-sign 19 comma 669

      If Alfred were to receive a higher terminal payment, his rate of return would be higher than 12%, else it would be lower. Because the instrument offered to him promises a terminal value of $25,000, which is greater than the required future value of $19,669, the investment is attractive from his perspective.

      The Present Value Approach

      The present value of $25,000 using a discount rate of 12% per annum is:

normal upper P period normal upper V period equals StartFraction 25 comma 000 Over left-parenthesis 1.12 right-parenthesis Superscript 4 Baseline EndFraction equals 25 comma 000 times 0.6355 equals dollar-sign 15 comma 888.15

      The rate of return, if one were to make an investment of $15,888.15 in return for a payment of $25,000 four years hence, is 12%. If the investor were to pay a lower price at the outset, he would earn a rate of return that is higher than 12%, whereas if he were to invest more, he would obviously earn a lower rate of return. In this case Alfred is being asked to invest $12,500, which is less than $15,288.15. Consequently, the investment is attractive from his perspective.

      The Rate of Return Approach

      If Alfred were to pay $12,500 in return for a cash flow of $25,000 after four years, his rate of return may be computed as:

StartLayout 1st Row 12 comma 500 equals StartFraction 25 comma 000 Over left-parenthesis 1 plus r right-parenthesis Superscript 4 Baseline EndFraction 2nd Row right double arrow left-parenthesis 1 plus r right-parenthesis Superscript 4 Baseline equals 2 right double arrow r equals left-bracket 2 right-bracket Superscript 0.25 Baseline minus 1 equals 0.1892 identical-to 18.92 percent-sign EndLayout

      Since the actual rate of return obtained by Alfred is greater than the required rate of return of 12%, the investment is attractive.

      Not surprisingly, all three approaches lead to the same decision.

      If the first payment is made or received at the end of the first period, then we call it an ordinary annuity. Examples include salary, which will be paid only after an employee completes his duties for the month, and house rent, which will be usually paid by the tenant only at the end of the month. The interval between successive payments is called the payment period. We will assume that the payment period is the same as the interest conversion period. That is, if the annuity pays annually, we will assume annual compounding, whereas if it pays semiannually we will assume half-yearly compounding. This assumption is not mandatory and, in practice, we can easily handle cases where the payment period is longer than the interest conversion period, as well as instances where it is shorter.

An illustration of Timeline for an Annuity

      Assume that the applicable interest rate per period is r%. We can then calculate the present and future values as shown here.

      Present Value

StartLayout 1st Row normal upper P period normal upper V equals StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis EndFraction plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis squared EndFraction plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis cubed EndFraction plus minus minus minus minus plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis Superscript upper N Baseline EndFraction EndLayout

      Therefore,

StartLayout 1st Row normal upper P period normal upper V left-parenthesis 1 plus r right-parenthesis equals upper A plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis EndFraction plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis squared EndFraction plus minus minus minus minus plus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis Superscript upper N minus 1 Baseline EndFraction 2nd Row right double arrow normal upper P period normal upper V left-bracket left-parenthesis 1 plus r right-parenthesis minus 1 right-bracket equals upper A minus StartFraction upper A Over left-parenthesis 1 plus r right-parenthesis Superscript upper N Baseline EndFraction 3rd Row right double arrow normal upper P period normal upper V equals StartFraction upper A Over r EndFraction left-bracket 
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