Mispricing and Risk Premia in Currency Markets

Söhnke Bartram, Leslie Djuranovik, Anthony Garratt and Yan Xu

No 18563, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: Using real-time data, we show that currency excess return predictability is in part due to mispricing. First, the risk-adjusted profitability of systematic currency trading strategies decreases after dissemination of the underlying academic research, suggesting that market participants learn about mispricing from publications. Moreover, the decline is greater for strategies with larger in-sample profits and lower arbitrage costs. Second, the effect of comprehensive risk adjustments on trading profits is limited, and signal ranks and alphas decay quickly. The finding that analysts’ forecasts are inconsistent with currency predictors implies that investors’ trading contributes to mispricing and suggests biased expectations as a possible explanation.

Date: 2023-10
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