HP 12c Platinum Reference Manual page 72

72 Securities and Options
12c platinum / 12C
RPN KEYSTROKES
n: Term to expiry i: Interest rate (%)
FV: Strike price R
R : N(d ) R
3 1
R -R : Unused
7 .9
The n, i and PMT values must all be based on the same time unit (for example: n is
Note:
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 $.
d. Key in the volatility assumption as a percentage and press P.
e. Key in the strike price and press M.
3. Press R/S. The Call value is displayed. Press ~ to see the Put value.
DISPLAY
REGISTERS
Unused
0:
: Put value
4
12c platinum
ALG KEYSTROKES
?6
O
?5
~
g(037
~
:$
?-4
§
:3
-
:6
³
?+4
:4
~
?5
g(000
fs
PV: Stock price
R : Unused
1
R : Call value
5
DISPLAY
101, 44
102,
103, 44
104,
105,43,33,037
106,
107, 45
108,44 30
109,
110, 45
111,
112, 45
113,
114,44 40
115, 45
116,
117, 44
118,43,33,000
PMT: Volatility (%)
R : Unused
2
R : Q·N(d )
6 2
6
35
5
34
34
13
4
20
3
30
6
36
4
4
34
5