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...

This paper considers various options replication methods. Firstly, a specific type of barrier option, an up-and-out call, is considered. Other barrier options are briefly also described, and various types of barriers are considered. Secondly, a general definition of replication methods is...

Three approaches toward the determination of fixed swap rates are presented in this article: a swap as a portfolio of bonds with a fixed and floating coupon, a swap as a portfolio of forwards, and a swap as the difference between the cap and the floor (zero-collar). Later in the paper, credit...

The Czech tax system is undergoing radical transformation. Among the many forthcoming changes, several features can be identified, which alter the structure of tax asymmetries. This paper uses an option-based model of direct taxation to examine a controversial new thin-capitalization rule,...

In general, there exist many ways to detect the fair value of financial derivatives. However, each of them is suitable for different purposes. For example, when the payoff function is not very simple or the underlying process is too complex, the approach of Monte Carlo simulation can be useful....

Presented paper is dealing with using selected fundamental indicators by building a stock portfolio. Analysis is focused on using P/E and P/BV indicators by building a stock portfolio from stocks listed on Prague Stock Exchange. The aim of this paper is answer on question, if stocks with lower...

The present article is focused on the Capital Asset Pricing Model (CAPM) and its implementation into American Stock Market. It attempts to empirically test the validity of the CAPM to estimate individual stock returns based on historical stock data of selected companies. Security Market Line...