Estimation of volatility of financial time series plays a crucial role in pricing derivatives. Volatility is often estimated from historical data; however, it is well known that volatility varies in time. We propose a method to choose a suitable length of historical data to estimate contemporary...

The aim of the paper is to apply a theory of asymmetric information to managing production risk in agriculture. The second part of the paper is devoted to the tools for reducing the information asymmetry - parametric products (weather derivatives, index insurance). The results are based on...