# blsrho

Black-Scholes sensitivity to interest-rate change

## Syntax

## Description

`[`

returns the call option rho `CallRho`

,`PutRho`

] = blsrho(`Price`

,`Strike`

,`Rate`

,`Time`

,`Volatility`

)`CallRho`

, and the put option rho
`PutRho`

. Rho is the rate of change in value of derivative
securities with respect to interest rates. `blsrho`

uses `normcdf`

, the normal cumulative distribution function in the
Statistics and Machine Learning Toolbox™.

In addition, you can use the Financial Instruments Toolbox™ object framework with the `BlackScholes`

(Financial Instruments Toolbox) pricer object to obtain price and `rho`

values for a `Vanilla`

, `Barrier`

,
`Touch`

, `DoubleTouch`

, or
`Binary`

instrument using a `BlackScholes`

model.

**Note**

`blsrho`

can also handle an underlying asset such as
currencies. When pricing currencies (Garman-Kohlhagen model), enter the
input argument `Yield`

as:

Yield = ForeignRate

`ForeignRate`

is the continuously compounded,
annualized risk-free interest rate in the foreign country.

## Examples

## Input Arguments

## Output Arguments

## More About

## References

[1] Hull, John C. *Options, Futures, and Other Derivatives.*
*5th edition*, Prentice Hall, 2003.

## Version History

**Introduced in R2006a**