The BarrierDouble function calculates the theoretical price, sensitivities, the implied volatility, and the implied strike value of a European double barrier option using Ikeda and Kunitomo’s model. This function evaluates knock-out and knock-in double barrier options for both calls and puts. See Barrier Options for a further explanation.
BarrierDouble |
(OptionType, BarrierType, ModelStatistic, Asset, Strike, LowerBarrier, UpperBarrier, TimeExpire, Volatility, InterestRate, YieldRate, LowCurve, UpCurve, MarketPrice, Monitoring, TimeFormat, InterestType, YieldType) |
Note: Optional arguments are shown in Italics. MarketPrice is not Optional for the Implied Calculations.
Argument |
Description |
OptionType |
Alphanumeric value indicating the type of option: •Call = 1 or "c" (case insensitive) •Put = 2 or "p" (case insensitive) |
BarrierType |
Alphanumeric value indicating the barrier type: •Knock_In = 1 or "ki" (case insensitive) •Knock_Out = 2 or "ko" (case insensitive) |
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 •StrikeSensitivity = 11 •ImpliedStrike = 13 |
Asset |
The price of the underlying asset. Must be > 0. |
Strike |
The price at which the asset can be purchased if the option is a call or sold if the option is a put. Must be > 0. |
LowerBarrier |
The lower barrier price level. |
UpperBarrier |
The upper barrier price level. |
TimeExpire |
Time, expressed in either Days or Years (depending on the TimeFormat value), until the options expiration. 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. |
LowCurve |
Optional. The growth or curvature of the lower barrier. If omitted, a 0 (zero) is used. |
UpCurve |
Optional. The growth or curvature of the upper barrier. If omitted, a 0 (zero) is used. |
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. |
Monitoring |
Optional. Alphanumeric value indicating the frequency of the barrier monitoring. If omitted, a ContinuousSample is used. |
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 a knock-out call option whose asset price 117 days from expiration is $100, the exercise price of the option is $90, the lower barrier is $80, the upper barrier is $120, the risk-free interest rate is 6% per annum, the yield rate is 5% per annum, and the annual volatility is 25%. The barrier monitoring and all of the rates are continuous. So, |
Input |
|
Output |
|||
Variable |
Value |
|
Function |
Name |
Value |
OptionType |
Call |
|
1 |
Theoretical: |
6.273983 |
BarrierType |
2 (Knock-Out) |
|
2 |
Delta: |
0.089901 |
Asset |
100 |
|
3 |
Gamma: |
-0.042287 |
Strike |
90 |
|
4 |
Theta: |
0.036990 |
LowerBarrier |
80 |
|
5 |
Implied Vol.: |
0.258107 |
UpperBarrier |
120 |
|
6 |
Vega: |
-0.341438 |
InterestRate |
6% |
|
7 |
Rho: |
0.040682 |
YieldRate |
5% |
|
8 |
Psi: |
-0.060794 |
TimeExpire |
117 |
|
9 |
Lambda: |
1.432919 |
Volatility |
25% |
|
11 |
Strike Sensitivity: |
-0.552753 |
TimeFormat |
Days |
|
13 |
Implied Strike: |
90.500763 |
MarketPrice |
6 |
|
|
|
|
For a further example on this model see the included Excel Template located in the root directory of the add-in. This example can be accessed through the Barrier Template menu item after the add-in has been installed properly.
A list of all of the possible Error Messages is included for convenience.