We analyse the relationships between return calculation methods, risk and observation periods. We show that the mean of a return set calculated using logarithmic returns is less than the mean calculated using simple returns by an amount related to the variance of the set. This implies that there...

This paper examines the price impact of block trades for all listed firms in the Saudi stock market (SSM) using high frequency data. We find an asymmetric price impact for block trades of 0.5% for block purchases and −0.38% for block sales. However, on average, the price effect of a block...

We empirically examine the price impact of block trades, in the Saudi Stock Market over the time period of 2005–2008. Using a unique dataset of intraday data consisting of 2.3million block buys and 1.9million block sales, we find an asymmetry in the price impact of block purchases and sales....

Do banks extract rent from depositors who hold older deposit accounts? This study addresses this question using product level data from the UK instant access (branch based) deposit market. In this context, two research questions related to the conditions necessary for differential pricing for...

This study examines whether the recent UK regulatory decision to introduce a blanket ban on the joint provision of consumer lending and credit insurance was justified. This case has wide regulatory implications following international concerns that the sale of credit insurance has been...

<italic>This study examines the recent UK regulatory decision to ban the joint provision of consumer lending and payment protection or credit insurance (hereafter PPI). This case has wide regulatory implications following concerns that the sale of PPI has been detrimental to customers due to overpriced...</italic>