When is a fully hedged currency portfolio appropriate?

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AcadiFi · Accepted Answer

Full currency hedging is most appropriate for (1) liability-matched portfolios where liabilities are in the base currency (e.g., US pension holding European bonds), (2) short-horizon investors where currency volatility overwhelms expected return premia, (3) fixed income portfolios where currency volatility dwarfs underlying coupon differentials, and (4) risk-averse mandates with explicit low-volatility objectives. Consider Thornwood Insurance, a US P&C insurer with $500M of European bond allocation backing USD-denominated claim reserves. Unhedged EUR/USD exposure could swing portfolio value 8-12% annually, overwhelming the bonds' 3% yield advantage. Full hedging via rolling 1-month forwards removes this noise. Costs include: (1) hedging cost equal to the interest rate differential (EUR rates vs USD rates — when USD rates are higher, hedging EUR exposure returns the differential as positive carry; when foreign rates are higher, hedging costs money); (2) roll and transaction costs (2-8bps per roll); (3) collateral management for unrealized P&L; (4) forgone diversification in risk-off episodes when foreign currencies (safe havens like JPY, CHF) might rally. A policy hedge of 100% for fixed income is more defensible than 100% for equities because equity currency exposure is partly self-hedging — foreign companies with global revenues have less pure currency exposure than their domicile suggests. Regulatory rules (NAIC, Solvency II) also favor hedged foreign holdings to reduce capital charges.

When is a fully hedged currency portfolio appropriate?

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