A "compass rose" pattern sometimes appears when stock returns are plotted against themselves with a one-day lag, since stock prices move in discrete steps. In this paper, we perform a Monte Carlo study on simulated stock price series rounded in different ways to mirror the behavior of stocks on...

This paper investigates the pricing bias in the Swedish OMX-Index Option market and how a stochastic volatility affects European call option prices. The market is purely European and without dividends for the period studied. A CIR square-root process for the volatility is estimated with...

In this paper, the news aggregator Google News is used to assess the impact of worldwide news on the volatility of the Chinese stock market. Although we find a strong link between the global stock market volatility and the amount of stock market-related news available worldwide, the link between...