Black-Karasinski Tree Setup
The Black-Karasinski (Bk) model assumes that the short rate follows a log-normal process. This means that the logarithm of the short rate is normally distributed, which ensures that interest rates remain positive. Setup a BK interest-rate tree model using the following functions:
Functions
| bktimespec | Specify time structure for Black-Karasinski tree | 
| bktree | Build Black-Karasinski interest-rate tree | 
| bkvolspec | Specify Black-Karasinski interest-rate volatility process | 
Topics
- Understanding Interest-Rate Tree ModelsFinancial Instruments Toolbox™ supports the Black-Derman-Toy (BDT), Black-Karasinski (BK), Heath-Jarrow-Morton (HJM), and Hull-White (HW) interest-rate models. 
- Use treeviewer to Examine HWTree and PriceTree When Pricing European Callable BondThis example demonstrates how to use treeviewerto examine tree information for a Hull-White tree when you price a European callable bond.
- Overview of Interest-Rate Tree ModelsFinancial Instruments Toolbox computes prices and sensitivities of interest-rate contingent claims based on several methods of modeling changes in interest rates over time.