YIELD TO MATURITY ACCRUED INTEREST QUOTED PRICE …

YIELD TO MATURITY ACCRUED INTEREST

QUOTED PRICE INVOICE PRICE

September 1999

Quoted Rate Treasury Bills [Called Banker's Discount Rate]

d = [ P1 - P0 ] * [ 360 ]

P1

N

d = Bankers discount yield

P1 = face value P 0 = Price N = number of days until maturity

P1* N * d = P1 -1

P0 360

P0

1 +

P1 P0

d* N 360

=

P1 P0

=

holding

period

return

2

The invoice on a bond (what you pay) is quoted price plus accrued interest.

3

Government Bonds and Notes

Calculating Accrued Interest

Accrued interest is actual days/actual days

Last coupon date

settlement date

next coupon date

x

y

Accrued interest = x/y times interest payment

Example:

(1) 10% coupon (2) $100 interest annually or $50 semi-annual per

$1000 face

y = 183 x = 100

100 [50] = $27.32 183

4

Yield To Maturity

1. One coupon left [like T bill]

2. At coupon paying date

0

1

2

3

4

C Po

C

C

C

C + Prin

P0

=

C [1 + r

]

+

C [1 + r

]2

+

C [1 + r

]3

+

C + Prin [1 + r ]4

2

2

2

2

3. Between Coupon Dates

P0

+

A

=

C [1 + r

]w

+

[1 +

C r ]1+ w

+

[1 +

C r ]2+w

+

C + prin [1 + r ] 3+w

2

2

2

2

5

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