# price

## Syntax

## Description

`[`

computes the instrument price and related pricing information based on the pricing object
`Price`

,`PriceResult`

] = price(`inpPricer`

,`inpInstrument`

)`inpPricer`

and the instrument object
`inpInstrument`

.

`[`

adds an optional argument to specify sensitivities.`Price`

,`PriceResult`

] = price(___,`inpSensitivity`

)

## Examples

### Price `DoubleBarrier`

Instrument Using `BlackScholes`

Model and `VannaVolga`

Pricer

This example shows the workflow to price a `DoubleBarrier`

instrument when you use a `BlackScholes`

model and a `VannaVolga`

pricing method.

**Create DoubleBarrier Instrument Object**

Use `fininstrument`

to create a `DoubleBarrier`

instrument object.

DoubleBarrierOpt = fininstrument("DoubleBarrier",'Strike',100,'ExerciseDate',datetime(2020,8,15),'OptionType',"call",'ExerciseStyle',"European",'BarrierType',"DKO",'BarrierValue',[110 80],'Name',"doublebarrier_option")

DoubleBarrierOpt = DoubleBarrier with properties: OptionType: "call" Strike: 100 BarrierValue: [110 80] ExerciseStyle: "european" ExerciseDate: 15-Aug-2020 BarrierType: "dko" Rebate: [0 0] Name: "doublebarrier_option"

**Create BlackScholes Model Object**

Use `finmodel`

to create a `BlackScholes`

model object.

BlackScholesModel = finmodel("BlackScholes","Volatility",0.02)

BlackScholesModel = BlackScholes with properties: Volatility: 0.0200 Correlation: 1

**Create ratecurve Object**

Create a flat `ratecurve`

object using `ratecurve`

.

Settle = datetime(2019,9,15); Maturity = datetime(2023,9,15); Rate = 0.035; myRC = ratecurve('zero',Settle,Maturity,Rate,'Basis',12)

myRC = ratecurve with properties: Type: "zero" Compounding: -1 Basis: 12 Dates: 15-Sep-2023 Rates: 0.0350 Settle: 15-Sep-2019 InterpMethod: "linear" ShortExtrapMethod: "next" LongExtrapMethod: "previous"

**Create VannaVolga Pricer Object**

Use `finpricer`

to create a `VannaVolga`

pricer object and use the `ratecurve`

object for the `'DiscountCurve'`

name-value pair argument.

VolRR = -0.0045; VolBF = 0.0037; RateF = 0.0210; outPricer = finpricer("VannaVolga","DiscountCurve",myRC,"Model",BlackScholesModel,'SpotPrice',100,'DividendValue',RateF,'VolatilityRR',VolRR,'VolatilityBF',VolBF)

outPricer = VannaVolga with properties: DiscountCurve: [1x1 ratecurve] Model: [1x1 finmodel.BlackScholes] SpotPrice: 100 DividendType: "continuous" DividendValue: 0.0210 VolatilityRR: -0.0045 VolatilityBF: 0.0037

**Price DoubleBarrier Instrument**

Use `price`

to compute the price and sensitivities for the `DoubleBarrier`

instrument.

`[Price, outPR] = price(outPricer,DoubleBarrierOpt,["all"])`

Price = 1.6450

outPR = priceresult with properties: Results: [1x7 table] PricerData: [1x1 struct]

outPR.Results

`ans=`*1×7 table*
Price Delta Gamma Lambda Vega Theta Rho
_____ _______ ______ ______ ______ _______ ______
1.645 0.82818 75.662 50.346 14.697 -1.3145 74.666

## Input Arguments

`inpPricer`

— Pricer object

`VannaVolga`

object

Pricer object, specified as a scalar `VannaVolga`

pricer object.
Use `finpricer`

to create the `VannaVolga`

pricer
object.

**Data Types: **`object`

`inpInstrument`

— Instrument object

`Vanilla`

object | `Barrier`

object |
`DoubleBarrier`

object | `Touch`

object

Instrument object, specified as a scalar or vector of `Vanilla`

, `Barrier`

, `DoubleBarrier`

,
`Touch`

, or `DoubleTouch`

instrument objects. Use `fininstrument`

to create the
`Vanilla`

, `Barrier`

, `DoubleBarrier`

,
`Touch`

, or `DoubleTouch`

instrument objects.

**Data Types: **`object`

`inpSensitivity`

— List of sensitivities to compute

`[ ]`

(default) | string array with values `"Price"`

, `"Delta"`

,
`"Gamma"`

, `"Vega"`

, `"Rho"`

,
`"Theta"`

, `'Lambda'`

, and
`"All"`

| cell array of character vectors with values `'Price'`

,
`'Delta'`

, `'Gamma'`

, `'Lambda'`

,
`'Vega'`

, `'Rho'`

, `'Theta'`

, and
`'All'`

(Optional) List of sensitivities to compute, specified as a
`NOUT`

-by-`1`

or a
`1`

-by-`NOUT`

cell array of character vectors or
string array with supported values.

`inpSensitivity = {'All'}`

or ```
inpSensitivity =
["All"]
```

specifies that the output is `'Delta'`

,
`'Gamma'`

, `'Vega'`

, `'Lambda'`

,
`'Rho'`

, `'Theta'`

, and `'Price'`

.
This is the same as specifying `inpSensitivity`

to include each
sensitivity.

**Example: **```
inpSensitivity =
{'delta','gamma','vega','rho','lambda','theta','price'}
```

The sensitivities supported depend on the
`inpInstrument`

.

inpInstrument | Supported Sensitivities |
---|---|

`Vanilla` , | `'delta','gamma','vega','rho','lambda','theta','price'` |

`Barrier` | `'delta','gamma','vega','rho','lambda','theta','price'` |

`DoubleBarrier` | `'delta','gamma','vega','rho','lambda','theta','price'` |

`Touch` | `'delta','gamma','vega','rho','lambda','theta','price'` |

`DoubleTouch` | `'delta','gamma','vega','rho','lambda','theta','price'` |

**Data Types: **`string`

| `cell`

## Output Arguments

`Price`

— Instrument price

numeric

Instrument price, returned as a numeric.

`PriceResult`

— Price result

`PriceResult`

object

Price result, returned as a `PriceResult`

object. The object has
the following fields:

`PriceResult.Results`

— Table of results that includes sensitivities (if you specify`inpSensitivity`

)`PriceResult.PricerData`

— Structure for pricer data`PriceResult.PricerData.Overhedge`

— TBD

## More About

### Delta

A *delta* sensitivity measures the rate at which
the price of an option is expected to change relative to a $1 change in the price of the
underlying asset.

Delta is not a static measure; it changes as the price of the underlying asset changes (a concept known as gamma sensitivity), and as time passes. Options that are near the money or have longer until expiration are more sensitive to changes in delta.

### Gamma

A *gamma* sensitivity measures the rate of change
of an option's delta in response to a change in the price of the underlying asset.

In other words, while delta tells you how much the price of an option might move, gamma tells you how fast the option's delta itself will change as the price of the underlying asset moves. This is important because this helps you understand the convexity of an option's value in relation to the underlying asset's price.

### Vega

A *vega* sensitivity measures the sensitivity of
an option's price to changes in the volatility of the underlying asset.

Vega represents the amount by which the price of an option would be expected to change for a 1% change in the implied volatility of the underlying asset. Vega is expressed as the amount of money per underlying share that the option's value will gain or lose as volatility rises or falls.

### Theta

A *theta* sensitivity measures the rate at which
the price of an option decreases as time passes, all else being equal.

Theta is essentially a quantification of time decay, which is a key concept in options pricing. Theta provides an estimate of the dollar amount that an option's price would decrease each day, assuming no movement in the price of the underlying asset and no change in volatility.

### Rho

A *rho* sensitivity measures the rate at which the
price of an option is expected to change in response to a change in the risk-free interest
rate.

Rho is expressed as the amount of money an option's price would gain or lose for a one percentage point (1%) change in the risk-free interest rate.

### Lambda

A *lambda* sensitivity measures the percentage
change in an option's price for a 1% change in the price of the underlying asset.

Lambda is a measure of leverage, indicating how much more sensitive an option is to price movements in the underlying asset compared to owning the asset outright.

## Version History

**Introduced in R2020b**

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