After more than a decade of existence, crypto-currencies may now be considered an important class of assets presenting some unique appealing characteristics but also sharing some features with real financial assets. This paper provides a comprehensive statistical analysis of the six most...

This paper proposes the new concept of stochastic leverage in stochastic volatility models.Stochastic leverage refers to a stochastic process which replaces the classical constant correlation parameter between the asset return and the stochastic volatility process. We provide a systematic...

Using positive semidefinite supOU (superposition of Ornstein-Uhlenbeck type) processes to describe the volatility, we introduce a multivariate stochastic volatility model for financial data which is capable of modelling long range dependence effects. The finiteness of moments and the second...

This paper develops two models of the money marketmutual fund maturity decision. The first assumes thatmarkets are efficient but that transactions are costly. Thesecond model relies on a survey of fund managers to selectvariables that might permit exploiting perceivedprofit opportunities....

Most empirical work examining the intertemporal mean-variance relationship in stock returns has tended to use relatively simple specifications of the mean and especially of the conditional variance. We augment the information set to include economic variables that other researchers have found to...

A central economic idea is that an asset's risk premium is determined by its ability to insure against fluctuations in consumption (i.e., by the consumption beta). Cross-sectional differences in consumption betas mirror differences in the exposure of the asset's dividends to aggregate...

Most empirical work examining the intertemporal mean-variance relationship in stock returns has tended to use relatively simple specifications of the mean and especially of the conditional variance. We augment the information set to include economic variables that other researchers have found to...

This paper develops two models of the money marketmutual fund maturity decision. The first assumes thatmarkets are efficient but that transactions are costly. Thesecond model relies on a survey of fund managers to selectvariables that might permit exploiting perceivedprofit opportunities....

After more than a decade of existence, crypto-currencies may now be considered an important class of assets presenting some unique appealing characteristics but also sharing some features with real financial assets. This paper provides a comprehensive statistical analysis of the six most...

We propose two tests for the equality of covariance matrices between two high-dimensional populations. One test is on the whole variance-covariance matrices, and the other is on offdiagonal sub-matrices which define the covariance between two non-overlapping segments of the high-dimensional...