In this essay, we empirically test the Constant-Elasticity-of-Variance (CEV) option pricing model by Cox (1975, 1996 [note: A revised version of the paper was published by the Journal of Portfolio Management (1996).]) and Cox and Ross (1976), and compare the performances of the CEV and...

There appears to be a consensus that the recent instability in global financial markets may be attributable in part to the failure of financial modeling. More specifically, current risk models have failed to properly assess the risks associated with large adverse stock price behavior. In this...

Using four years of second-by-second executed trade data, we study the intraday effects of a representative group of scheduled economic releases on three exchange rates: EUR/$, JPY/$ and GBP/$. Using wavelets to analyze volatility behavior, we empirically show that intraday volatility clusters...

In this paper, we employ a combination of the jump diffusion and GARCH model in the mean equation to test the risk-return relationship in the U.S. stock returns. The results suggest a statistically significant relationship between the risk and the return if the risk measure includes components...