The CompoundBin function calculates the theoretical price, sensitivities, the implied volatility, and the implied strike value of an American or European style compound option using a binomial model. This model evaluates compound options where the compound option and the underlying option both expire at the same time. See Multiple Exercise Options for a further explanation.
CompoundBin |
(ExerciseType, OptionType, ModelStatistic, Asset, StrikeOption, StrikeUnderly, TimeExpire, Volatility, InterestRate, YieldRate, Iterations, MarketPrice, TimeFormat, InterestType, YieldType) |
Note: Optional arguments are shown in Italics. MarketPrice is not Optional for the Implied Calculations.
Argument |
Description |
ExerciseType |
Alphanumeric value indicating the exercise type: •American = 0 or "a" (case insensitive) •European = 1 or "e" (case insensitive) |
OptionType |
Alphanumeric value indicating the type of option: •Call_Call = 1 or "cc" (call option on a call option) •Call_Put = 2 or "cp" (call option on a put option) •Put_Call = 3 or "pc" (put option on a put option) •Put_Put = 4 or "pp" (put option on a put option) |
ModelStatistic |
Numeric value indicating the type of function required for the return value: •Theoretical = 1 •Delta = 2 •Gamma = 3 •Theta = 4 •ImpliedVol = 5 •Vega = 6 •Rho = 7 •Psi = 8 •Lambda = 9 •UnderlyStrikeSensativity = 58 •UnderlyImpliedStrike = 59 •OptionStrikeSensativity = 60 •OptionImpliedStrike = 61 |
Asset |
The price of the underlying asset. Must be > 0. |
StrikeOption |
The price at which the compound option can be purchased if the option is a call or sold if the option is a put. Must be > 0. |
StrikeUnderly |
The price at which the underlying asset can be purchased if the option is a call or sold if the option is a put. Must be > 0. |
TimeExpire |
Time, expressed in either Days or Years (depending on the TimeFormat value), until the expiration compound and underlying options. Must be > 0. |
Volatility |
Annualized volatility of the underlying security. Must be > 0. |
InterestRate |
Risk-free interest rate expressed as a percentage. This rate is interpreted as a continuously compounded rate unless otherwise specified in the InterestType argument. Must be > 0. |
YieldRate |
Yield, expressed as a percentage (dividends or interest yield), of the underlying asset price. This rate is interpreted as a continuously compounded rate unless specified otherwise in the YieldType argument. |
Iterations |
The number of iterations used for the trinomial model. Must be between 5 and 500. |
MarketPrice |
Optional. The selling price of the option in the marketplace. This input is required when implied volatility and strike are calculated. Price must be > 0. |
TimeFormat |
Optional. Alphanumeric value indicating the format of the time arguments (i.e. TimeExpire). If omitted, Days are used as the default. Specified as either: •Days = 0 or "D" (case insensitive) •Years = 1 or "Y" (case insensitive) |
InterestType |
Optional. Alphanumeric value indicating the type of InterestRate to use when evaluating the option. This value is converted to Continuously Compounded for the calculations. If omitted, a Continuously Compounded rate is used. |
YieldType |
Optional. Alphanumeric value indicating the type of YieldRate to use when evaluating the option. This value is converted to Continuously Compounded for the calculations. If omitted, a Continuously Compounded rate is used. |
Example
Calculate all of functions for an American compound call on put option whose asset price 225 days from expiration is $66. The exercise price of the compound call is $3.5, the exercise price of the underlying call is $70, the risk-free interest rate is 8% per annum, the yield rate is 5.25% per annum, and the annual volatility is 20%. All of the rates are considered continuous and Iterations = 100. So, |
Input |
|
Output |
|||
Variable |
Value |
|
Function |
Name |
Value |
ExerciseType |
American |
|
1 |
Theoretical: |
3.841591 |
OptionType |
2 (Call on Put) |
|
2 |
Delta: |
-0.456361 |
Asset |
66 |
|
3 |
Gamma: |
0.041088 |
StrikeOption |
3.5 |
|
4 |
Theta: |
-0.006695 |
StrikeUnderly |
70 |
|
5 |
Implied Vol.: |
0.207964 |
TimeExpire |
225 |
|
6 |
Vega: |
0.198901 |
Volatility |
20% |
|
7 |
Rho: |
-0.150289 |
InterestRate |
8% |
|
8 |
Psi: |
0.135487 |
YieldRate |
5.25% |
|
9 |
Lambda: |
-7.840450 |
MarketPrice |
4 |
|
58 |
UnderlyStrikeSens: |
0.525123 |
TimeFormat |
Days |
|
59 |
UnderlyImpliedStrike: |
70.300777 |
|
|
|
60 |
OptionStrikeSens: |
-0.525123 |
|
|
|
61 |
OptionImpliedStrike: |
3.199221 |