Section 13: Investment Analysis 199
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 199 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
KEYSTROKES
(RPN mode)
DISPLAY
KEYSTROKES
(ALG mode)
DISPLAY
}
113, 36
?+
4
114,44 40 4
:
4
115, 45 4
~
116, 34
?
5
117, 44 5
g(
000
118,43,33, 000
fs
REGISTERS
n: Term to expiry i: Interest rate (%) PV: Stock price
PMT: Volatility (%)
FV: Strike price R
0:
Unused R
1
: Unused R
2
: Unused
R
3
: N(d
1
) R
4
: Put value R
5
: Call value R
6
: QxN(d
2
)
R
7
-R
.9
: Unused
Note: The n, i and PMT values must all be based on the same time unit (for
example: n is measured in years or months and i and PMT are rates per year
or per month). i is a continuous percentage rate. PMT is the standard
deviation of the continuous percentage stock return (as observed over the
time unit). For sensible output, all inputs should be positive. The PMT=0 case
can be simulated by using a PMT arbitrarily close to 0.
Program Instructions
1. Key in the program.
2. Enter the five inputs into the five financial registers. These values are
preserved by the program.
a. Key in the unexpired term of the option and press n.
b. Key in the risk-free interest rate as a percentage and press ¼.
c. Key in the current (or spot) stock price and press $.
d. Key in the volatility assumption as a percentage and press P.
e. Key in the strike price and press M.
3. Press t. The Call value is displayed. Press ~ to see the Put value.
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