We study the 52-week high momentum strategy in international stock markets proposed by George and Hwang (2004). This strategy produces profits in 18 of the 20 markets studied, and the profits are significant in 10 markets. The 52-week high momentum profits still exist conditional on past...

We demonstrate the estimation biases that arise when stock returns from 12month prior and 2month prior are included within intermediate and recent past momentum profits. These biases lead to an overestimation of intermediate past momentum but an underestimation of recent past momentum in the US...

Novy-Marx (2010) finds that momentum is primarily driven by stock performance twelve to seven months prior to portfolio formation in the US market. We examine whether this finding holds in international stock markets. In particular, we investigate whether intermediate horizon past performance is...

We propose a measure for extreme downside risk (EDR) to investigate whether bearing such a risk is rewarded by higher expected stock returns. By constructing an EDR proxy with the left tail index in the classical generalized extreme value distribution, we document a significantly positive EDR...

We examine how the use of high-frequency data impacts the portfolio optimization decision. Prior research has documented that an estimate of realized volatility is more precise when based upon intraday returns rather than daily returns. Using the framework of a professional investment manager...

The empirical evidence on the cross-sectional relation between idiosyncratic risk and expected stock returns is mixed. We demonstrate that the omission of the previous month's stock returns can lead to a negatively biased estimate of the relation. The magnitude of the omitted variable bias...

Using the Korea Stock Exchange's transaction data and limit order book, we document the accelerating patterns of market activity before limit hits. We confirm the existence of the magnet effect from several key market microstructure variables, using a parsimonious quadratic function of the time...