Adjusted mixed approach with constant fee

In the following example we’re going to price VA contracts with GMAB and GMDB riders with the following features:

Contract values corresponding to a base fee ranging from 6% to 12% will be estimated by means of both the static and mixed approaches. The number of Monte Carlo simulations will be 20000. The models for the underlying fun, interest rate and intensity of mortality is the one used in BMOP2011. In this case, at each step the linear regression in LSMC will be done only for paths where the GMAB guarantee is out of the money.

## Fee:  0.06 
## Static: 99.95477 
## Mixed:  102.586 
## Fee:  0.07 
## Static: 98.69378 
## Mixed:  101.8006 
## Fee:  0.08 
## Static: 97.72466 
## Mixed:  101.1322 
## Fee:  0.09 
## Static: 96.96334 
## Mixed:  100.5331 
## Fee:  0.1 
## Static: 96.40756 
## Mixed:  99.94588 
## Fee:  0.11 
## Static: 95.99733 
## Mixed:  99.42404 
## Fee:  0.12 
## Static: 95.70805 
## Mixed:  98.92146 
## Fee:  0.13 
## Static: 95.52057 
## Mixed:  98.46575 
## Fee:  0.14 
## Static: 95.37941 
## Mixed:  98.07901 
## Fee:  0.15 
## Static: 95.29325 
## Mixed:  97.71793 
## Fee:  0.16 
## Static: 95.24124 
## Mixed:  97.4244 
## Fee:  0.17 
## Static: 95.22218 
## Mixed:  97.1501 
## Fee:  0.18 
## Static: 95.20298 
## Mixed:  96.90856

Conclusions

The adjusted mixed approach works as expected under constant fee.