This study examines individual commodity futures price reaction to large one day price changes, or "shocks". The mean-adjusted abnormal return model suggests that investors in 6 of the 18 commodity futures, examined in this study, either underreact or overreact to positive surprises. It also...

Using a sample comprising nearly a quarter of a million weekly prices from the largest seven supermarket chains in the UK, we present statistical evidence on two pricing practices that have attracted public interest. Analysing price dynamics before and after periods of promotional discounting...