the world copper market, from at least 1991 until earlier this year. This manipulation has concentrated attention on the … manipulation is not illegal under UK financial services regulation, but that in any case, deterrence is better than prosecution …. Manipulation will be best deterred by greater transparency, in particular through mandatory reporting of client positions to …

through both productive effort and costly manipulation, and may undo the contract by privately saving. The optimal contract …

This paper reexamines U.S. business cycle volatility since 1867. We employ dynamic factor analysis as an alternative to … reconstructed national accounts. We find a remarkable volatility increase across World War I, which is reversed after World War II …

volatility of state output growth, rather than in its average. The realized industry shares of output also converge faster to …

inflation volatility, we unwind one of Sargent's simplifications and allow the monetary authority to react to some of the shocks … were also persuaded to stop using changes in inflation to offset shocks. Inflation and inflation volatility therefore …

volatility. This paper focuses on extreme correlation, that is to say the correlation between returns in either the negative or … not for the positive tail. We also find that correlation is not related to market volatility per se but to the market …

? Can stock return predictability be explained by changes in stock market volatility? How does the mean return per unit risk … predictor of both the mean and volatility of excess stock market returns. We characterize the risk-return tradeoff as the … negatively linked to variation in market volatility, at odds with leading asset pricing models. Since the conditional volatility …

Black/Scholes constant volatility assumption is violated in practice. These authors hypothesize that the volatility of the … underlying asset’s return is a deterministic function of the asset price and time, and develop the deterministic volatility … 1993, we evaluate the economic significance of the implied deterministic volatility function by examining the predictive …