Purpose - The purpose of this paper is to summarise and reflect upon key issues at the interface of prices, information and regulation with a focus upon the stock market in context. Reflecting upon academic research in the area of efficient markets, and regulatory policy, the concern is to...

Using a novel dataset of insider trading and short selling from the Hong Kong Stock Exchange, we investigate potential information leakage from insiders to short sellers, particularly in family-controlled firms. We document a significant increase in short selling volume before information on...