In this article, we will discuss a few enhancements for SABR model implementation, first we will introduce a fast SABR calibration with the standard Hagan's formula by reducing the number of model parameters; then we will address the negative probability at the low strike wing with the Hagan's...

The choice of instruments for mitigating economic volatility is a serious consideration for policymakers and important question in government and economics. Using a DSGE model with endogenous technology creation, we show that efficient financial markets are more effective than conventional...