Hedging with an Edge: Parametric Currency Overlay
39 Pages Posted: 18 Aug 2017 Last revised: 13 Dec 2017
Date Written: November 16, 2017
Campbell, Serfaty-De Medeiros, and Viceira (2010) propose an optimized method to hedge currency risk in portfolios of international equities. In a demanding out-of-sample test, incorporating transaction and rebalancing costs, and margin requirements we find their method reduces risk in real time, but also underperforms economically a naïve alternative or even a purely domestic portfolio. We propose modeling the currency hedging strategy as a function of characteristics proxying for expected returns and risk. We find that using currency momentum, value, carry, and autocorrelation significantly reduces the cost of hedging. Proxies for risk, such as volatility, skewness, beta on volatility, and equity sensitivity are irrelevant in our optimizations. Our optimal strategy is close to a fully hedged portfolio, but with a sizable 38% gain in Sharpe ratio.
Keywords: Foreign exchange, currency market, currency overlay.
JEL Classification: F31, G11
Suggested Citation: Suggested Citation