This paper proposes a new method to introduce coherent risk measures for risks with infinite expectation, such as those … characterized by some Pareto distributions. Extensions of the conditional value at risk, the weighted conditional value at risk and …

. The relationship between risk and return in the long and short term was explored. Results indicated no significant … relationship between the risk and return of the stock portfolio in the short run, which reflects the complexity of the Chinese … stock market. However, in the long run, the risk and return of the stock portfolios are positively correlated, which means …