Why currency hedging matters
Foreign investment return combines local-asset and currency results. Hedging can stabilize base-currency outcomes, but adds cost, collateral, basis, and rollover risk.
How it is applied
Investors define base currency, exposure, hedge ratio, instrument, tenor, rebalance frequency, and treatment of changing market values and cash flows. Identify foreign-currency assets, liabilities, and forecast cash flows, choose target hedge ratios, and use forwards, futures, swaps, or options aligned with amount and timing. Rebalance for market moves and portfolio flows. Measure results including forward points, spread, collateral, taxes, and residual basis.
Portfolio example
A yen investor owns $1 million of U.S. shares and sells dollars forward. A dollar decline is partly offset, while a dollar rise creates a hedge loss. A yen-based investor owns 10 million dollars of US equities and sells 8 million dollars forward against yen, creating an 80% hedge. If the dollar falls, the forward offsets most translation loss; the remaining 20% and changes in portfolio value stay exposed.
How to interpret it
A full notional hedge is not necessarily complete because asset value changes. Forward points reflect rate differentials rather than a simple fee. Hedging reduces currency contribution but can add or subtract persistent carry from interest-rate differentials. Full hedging is not always optimal when currency diversifies the underlying asset. Policy should distinguish strategic hedging from active currency return seeking.
Limitations and common misconceptions
Forecast exposure can differ from actual exposure. Options cost premium, forwards create counterparty and collateral needs, and hedges can reduce beneficial currency gains. Forecast amounts and dates can be wrong, creating over-hedges. Forwards introduce counterparty, collateral, roll, and convertibility risk. Options add premium and volatility exposure. A hedge can lose when the foreign currency appreciates and may not qualify for desired accounting or tax treatment. For pooled funds, hedge gains and losses must be allocated fairly among share classes as subscriptions and redemptions change exposure. A static hedge can drift materially after a market rally. Compare hedge effectiveness with the policy target and explain whether forward carry is reported within currency return, asset return, or a separate overlay.
Sources and further reading
- Triennial Central Bank Survey of Foreign Exchange and OTC Derivatives MarketsBank for International Settlements
- Exchange RatesInternational Monetary Fund
- Currency Exchange RatesCFA Institute