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Risk aversion, exchange-rate uncertainty, and the law of one price: Insights from the market for online air-travel tickets (2011)
Journal Article
Arghyrou, M. G., Gregoriou, A., & Pourpourides, P. M. (2011). Risk aversion, exchange-rate uncertainty, and the law of one price: Insights from the market for online air-travel tickets. Canadian Journal of Economics / Revue Canadienne d'Économique, 44(3), 880-906. doi:10.1111/j.1540-5982.2011.01659.x

We argue that risk aversion driven by exchange-rate uncertainty causes a wedge between the domestic and foreign prices of a homogeneous good. We test our hypothesis using a unique micro-data set from a market with minimum imperfections. The empirical... Read More about Risk aversion, exchange-rate uncertainty, and the law of one price: Insights from the market for online air-travel tickets.

Trading frequency and asset pricing on the London Stock Exchange: Evidence from a new price impact ratio (2011)
Journal Article
Gregoriou, A., Florackis, C., & Kostakis, A. (2011). Trading frequency and asset pricing on the London Stock Exchange: Evidence from a new price impact ratio. Journal of Banking and Finance, 35(12), 3335-3350. https://doi.org/10.1016/j.jbankfin.2011.05.014

This study proposes a new price impact ratio as an alternative to the widely used Amihud's (2002) Return-to-Volume ratio. We demonstrate that the new price impact ratio, which is deemed Return-to-Turnover ratio, has a number of appealing features. Us... Read More about Trading frequency and asset pricing on the London Stock Exchange: Evidence from a new price impact ratio.