The ad hoc Black-Scholes (AHBS) model is one of the most widely used option valuation models among practitioners models. The main contribution of this study is methodological. We have two main results: (1) we make the empirical observation that typically the call and put sneers are discontinuous...

In this paper we note that unrelated research in the management and finance fields, if combined, makes predictions concerning board reforms in emerging countries. Specifically, outside directors' demographic characteristics that are salient to foreign investors should reduce stock price...

We explore whether economic links via trade affect aggregate Chinese stock market returns. We find that market return indices from countries that China net exports from can forecast the Chinese aggregate market return at the weekly time horizon. Countries that China net exports to have no...

This paper builds on the recent debate on the in-sample and out-of-sample predictability of US aggregate returns using a wide range of predictors by providing new evidence for smaller and less market-oriented European countries. We find evidence that macro and technical predictors can...

Skewness is specifically considered to develop semi-parametric upper bounds for option prices and expected payoffs for call options. Bounds on variance default swaps, a new asset, and for the variance risk premium are derived.The Technical Proof for this paper is available at the following URL:...

We show in a simple framework that momentum trading can exist in equilibrium and momentum trading is profitable. Properties of the model fit the empirics well. First, the model captures in a parsimonious manner both short-term overreaction and long-term reversals. Second, it predicts that...

This paper investigates the relation between uncertainty and stock index returns for 15 countries. An innovation is to use macro-uncertainty at both the country and global level. Our results suggest that country-specific GDP uncertainty, but not global GDP uncertainty is positively correlated...

This study addresses the effectiveness of program trade regulation by conducting an analysis of program trading restrictions during large market moves. To address this issue, we analyze the effect of sidecars (halts that only affect program trades) using intraday data from the Korean securities...

We study gains to momentum trading from 1946 through 2002. Past papers assume a zero-investment strategy where short sales of losers fund the purchase of winners. In practice, the broker holds the cash from the short sale as collateral, and the investor funds long positions with his own or...

This paper provides several statistics concerning cancellation latency that would be helpful to regulators as they consider policies to establish a minimal quote life. We find that cancellation latency is related to market quality and is not constant. Rather, it varies depending upon the time of...