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Title: Currency Anomalies

Author(s): Söhnke M Bartram, Leslie Djuranovik and Anthony Garratt

Publication Date: January 2021

Keyword(s): Analysts, Anomalies, arbitrage costs, Exchange Rates, instrumented principal components analysis, IPCA, Market Efficiency, mispricing, predictors and Real-time

Programme Area(s): Financial Economics and International Macroeconomics and Finance

Abstract: This paper is the first to study the cross-section of currency excess return predictors to explore alternative explanations for their existence. Using real-time data, quantitative currency trading strategies are profitable during in-sample and out-of-sample periods, both before and after transaction costs, but (risk-adjusted) profits decrease substantially after the publication of the underlying academic research. In line with predictor profits reflecting mispricing, the decline is greater for strategies with larger in-sample profits and lower arbitrage costs, signal ranks and performance decay quickly, and the effect of risk adjustments on trading profits is limited. While analysts' currency forecasts are inconsistent with currency predictors, analysts update their forecasts quickly to incorporate lagged predictor information. The results suggest that market participants learn about mispricing from academic publications, while contributing to it when following analysts' forecasts.

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Bibliographic Reference

Bartram, S, Djuranovik, L and Garratt, A. 2021. 'Currency Anomalies'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=15653