Appendix B: More About Calculations
IV
Bonds
Reference: Lynch, John J. Jr. and Jan Mayle,
Stanford Securities Calculation Methods,
Securities Industry Association
, New York, 1986.
A = accrued days, the number of days from beginning of coupon period to settlement date.
E = number of days in coupon bracketing settlement date. By convention, E is 180 (or 360) if
calendar basis is 30/360.
DSC = number of days from settlement date to next coupon date. (DSC= E - A).
M = coupon periods per year (1 = annual, 2 = semiannual).
N = number of coupon periods between settlement and redemption dates. If N has a
fractional part (settlement not on coupon date), then round it to the next higher whole number.
Y = annual yield as a decimal fraction, YLD% / 100.
For one or fewer coupon period to redemption:
Note: coupon (
CPN
) is a percentage (
CPN%
) in both cases.
For more than one coupon period to redemption:
The end of month convention is used to determine coupon dates in the following exceptional
situations. This affects calculations for
YLD%
,
PRICE
, and
ACCRU
.
•
If the maturity date falls on the last day of the month, then the coupon payments will also fall on the
last day of the month. For example, a semiannual bond that matures on September 30 will have
coupon payment dates on March 31 and September 30.
•
If the maturity date of a semiannual bond falls on August 29 or 30, then the February coupon
payment dates will fall on the last day of February (28, or 29 in leap years).
PRICE
CALL
CPN
M
------------
+
1
DSC
E
------------
Y
Y
---
×
⎝
⎠
⎛
⎞
+
-------------------------------------
A
E
---
CPN
M
------------
×
⎝
⎠
⎛
⎞
–
=
CALL
1
Y
Y
---
+
⎝
⎠
⎛
⎞
N
1
–
DSC
E
------------
+
----------------------------------------
CPN
M
------------
1
Y
M
-----
+
⎝
⎠
⎛
⎞
K
1
–
DSC
E
------------
+
------------------------------------------
N
∑
A
E
---
CPN
M
------------
×
⎝
⎠
⎛
⎞
–
+
Summary of Contents for 10bII+
Page 1: ...i HP 10bII Financial Calculator User s Guide HP Part Number NW239 90001 Edition 1 May 2010 ...
Page 3: ...iii HP 10bII Financial Calculator ...
Page 30: ...At a Glance 22 ...
Page 144: ...Statistical Calculations 136 ...
Page 183: ...Warranty Regulatory and Contact Information 9 ...
Page 184: ...Warranty Regulatory and Contact Information 10 ...