This article extends the variance ratio test of Lo and MacKinlay (1988) to tests of skewness and kurtosis ratios. The proposed tests are based on generalized methods of moments. In particular, overlapping observations are used and their dependencies (under the IID assumption) are explicitly...

Contrary to public perception, this article finds Universities Superannuation Scheme (USS), the largest defined benefit pension in UK, is more likely to be in surplus rather than deficit. Evidence is provided to show that neither low gilt yields nor high valuations imply low future returns on...

CA representative pensioner is considered for the evaluation of some of the cost factors for the career-average-revalued-earnings (CARE) defined benefit scheme of USS (the Universities Superannuation Scheme). Since the promised benefit increases with inflation, the return on the pension...

The current subprime crisis has prompted us to look again into the nature of risk at the tail of the distribution. In particular, we investigate the risk contribution of an asset, which has infrequent but huge losses, to a portfolio using two risk measures, namely Value-at-Risk (VaR) and...

The current subprime crisis has prompted us to look again into the nature of risk at the tail of the distribution. In particular, we investigate the risk contribution of an asset, which has infrequent but huge losses, to a portfolio using two risk measures, namely Value-at-Risk (VaR) and...

Using tweets from StockTwits and machine-learning classification techniques, we find that social-media sentiment predicts positively and significantly future stock returns, and, importantly, such positive predictability decreases when the number of stocks users follow increases. The return...

This paper examines the within-market and cross-market information content of order flow for stocks, corporate bonds and Treasury bonds in China. With daily-aggregated tick-by-tick data over three years on the Shanghai Security Exchange, we find negative cross-asset effects of order flow on...