Empirical financial literature documents the evidence of mean reversion in stock prices and the absence of out-of-sample return predictability over periods shorter than 10 years. The goal of this paper is to test the random walk hypothesis in stock prices and return predictability over periods...

Recent literature on stock return predictability suggests that it varies substantially across economic states being strongest during bad economic times. In line with this evidence, we document that stock volatility predictability is also state dependent. In particular, using a large data set of...

The empirical literature has extensively documented several notable features of implied volatility. These features encompass the presence of a smirk shape, a term structure pattern, as well as volatility and skewness risk premia. The theoretical literature suggests that preference-free option...

There is a big controversy among both investment professionals and academics regarding the question of how the probability that a bull or bear market terminates depends on its age. Using more than two centuries of data on the broad US stock market index, in this paper we revisit the duration...

We start this paper by presenting compelling evidence of short-term momentum in the excess returns on the S&P Composite stock price index. For the first time ever, we assume that the excess returns follow an autoregressive process of order p, AR(p), and evaluate the parameters of this process....