No abstract

By employing high-frequency data, a series of minute-by-minute HSI data, this paper examines whether the expiration-day effect exists in the last trading period before the market closes in the Hong Kong stock market. Contrary to the previous findings in the well-developed US markets, this paper finds that the expiration-day effect neither exists on the whole expiration day nor in the last trading time of the expiration day before the market closes. This study suggests that the expiration-day effects are not unavoidable by-products of the creation of index futures in the stock market.

No abstract

No abstract

Corporate sustainability is an important issue in many parts of the world today. Many studies have pointed out that it will have an impact on share price performance. This article investigates the corporate sustainability aspect of the listed companies in the Mainland China A-shares market. Our objective is to fill the gap in the previous studies conducted on Western markets and the Mainland China market. The constituent stocks in the Hang Seng (China A) Corporate Sustainability Index (HSCASUS) and the corresponding control stocks in the same industry were taken out and examined. The results of our study indicated that there was no significant relation between the stock return and corporate sustainability for the Mainland China A-shares market.This research contributes to the promotion of corporate sustainability and provides a reference for the same topic in other emerging countries.