We evaluate the robustness of momentum returns in the US stock market over the period 1965 to 2010. We find that momentum profits have become insignificant since the late 1990s partially driven by pronounced increase in the volatility of momentum profits in the last 12 years. Past returns no...

The battle between proponents of the Efficient Markets Hypothesis and champions of behavioral finance has never been more pitched, and little consensus exists as to which side is winning or the implications for investment management and consulting. In this article, I review the case for and...

We argue that the Jacobsen and Visaltanachoti (2009) study is incomplete. Jacobsen and Visaltanachoti (2009) evaluate the Halloween effect or ‘Sell in May'-effect as documented by Bouman and Jacobsen (2002), and extend the analysis into the relative performances of sectors during the winter...

Even when participants know very little about their environment, the market, itself, by serving as a selection process of information, promotes an efficient aggregate outcome. To emphasize the role of the market and the importance of natural selection, rather than the strategic actions of...

Natural selection is used to examine a one-sided buyer auction market. With each trader's behavior preprogrammed with its own inherent and fixed probabilities of overpredicting, predicting correctly and underpredicting the fundamental value of the asset, informational efficiency occurs. If each...

Market efficiency is measured by arbitrage proximity. The magnitude of probability distortion necessary to remove drift calibrates the efficiency. Simulations of bilateral gamma models estimated on a year's past returns yield empirical acceptability indices for each day for each asset. The...

We show that dealers' limited market participation, coupled with an informational friction resulting from lack of market transparency, can make liquidity demand upward sloping, inducing strategic complementarities: traders demand more liquidity when the market becomes less liquid, fostering...

This study provides the first empirical investigation of informational efficiency for the Chicago Climate Exchange. Using daily settlement price and trading volume data for the Carbon Financial Instruments, we conduct a battery of econometric tests in assessing weak-form market efficiency for...

This paper addresses findings from previous asset pricing research that reveal lottery-like stocks are mispriced. This conclusion, however, relies on asset pricing models which might suffer from the joint hypothesis problem: That is, abnormal returns can reflect market inefficiencies, a bad...

This paper examines the profitability of a pairs trading strategy derived solely from historic price dynamics and contrarian principles. We find that the profitability of the self-financing strategy hinges on a cointegrated relationship, which Engle and Granger (1987) show also implies an...