Estimated study time: 45 minutes
Content:
Currency management is a significant source of both risk and return for international portfolios. When a domestic investor holds foreign assets, returns are affected by both the asset's local return and the change in the exchange rate between the foreign currency and the domestic currency. Currency overlay managers specialize in managing this foreign exchange exposure either as a separate mandate (hedging asset managers' FX exposure) or as an alpha-generating strategy (taking active currency positions).
The hedging decision starts with the question of whether currency exposure should be fully hedged, partially hedged, or left unhedged. Empirically, currency exposure adds substantial volatility to international portfolios over short and medium horizons, while in the long run currencies tend to revert toward purchasing power parity (PPP), reducing the long-term impact. Most institutional investors adopt a strategic hedge ratio — a target percentage of foreign currency exposure to hedge on an ongoing basis — typically between 50% and 100% for currency-sensitive mandates.
Forward contracts are the primary hedging instrument. A manager with a foreign currency asset can sell the foreign currency forward (delivering foreign currency, receiving domestic) to lock in today's exchange rate for a future settlement. The all-in cost of hedging is determined by the forward premium or discount, which equals the interest rate differential (covered interest rate parity). If the foreign country has higher short-term interest rates than the domestic country, forward points are negative — the foreign currency trades at a forward discount and hedging "costs" positive carry (i.e., the manager gives up positive carry from the higher foreign rates to remove the currency risk).
Dynamic hedging strategies adjust the hedge ratio based on currency views or market conditions. A passive (static) hedge ratio simply maintains a fixed percentage hedge and rolls forward contracts as they mature. An active currency overlay dynamically adjusts the hedge ratio — increasing the hedge when the manager expects the foreign currency to depreciate, decreasing the hedge when the foreign currency is expected to appreciate. Currency alpha is often generated through: carry trades (holding high-interest-rate currencies), momentum (trending in the direction of recent currency moves), and value (buying undervalued currencies based on PPP or real exchange rate models).
Cross-currency hedging may be used when direct hedging instruments are costly or unavailable. A proxy hedge uses a third, correlated currency as the hedging instrument — for example, hedging exposure to a thinly traded emerging market currency using a more liquid correlated currency. The risk is that the proxy correlation breaks down in stress periods precisely when the hedge is most needed. Macro hedges use options (typically put options on the domestic currency or call options on foreign currencies) to provide asymmetric protection against large adverse currency moves while preserving upside.
Key Terms:
Quiz Questions:
Q1. A US-based investor holds a EUR-denominated bond portfolio. She sells EUR forward against USD to hedge the currency exposure. If EUR interest rates are higher than USD interest rates, the forward contract will be:
A) At a forward premium (EUR forward rate above spot) — the hedge earns positive carry B) At a forward discount (EUR forward rate below spot) — the hedge costs positive carry (the manager pays to hedge) C) At par — because purchasing power parity ensures forward rates equal spot rates D) Indeterminate — forward rates depend only on inflation expectations
Answer: B — Covered interest rate parity: if EUR rates > USD rates, the EUR is at a forward discount (forward EUR/USD is below spot EUR/USD). The US investor selling EUR forward receives fewer USD in the future relative to spot — the hedge costs the interest rate differential. The investor "pays" to hedge by giving up the higher EUR carry.
---
Q2. A global equity portfolio has 40% of its exposure in Japanese equities. The manager decides to maintain a 75% strategic hedge ratio on the JPY exposure. If the portfolio has $500 million in total assets, how much JPY exposure should be hedged?
A) $375 million (75% of total portfolio) B) $150 million (75% of 40% × $500M = $150M) C) $200 million (100% of the JPY exposure) D) $300 million (75% × $500M − JPY exposure)
Answer: B — JPY exposure = 40% × $500M = $200M. Hedge 75% of JPY exposure: $200M × 75% = $150M of JPY sold forward. Only the foreign currency portion is hedged, not the total portfolio.
---
Q3. A currency overlay manager is evaluating a carry trade: borrowing JPY (0.1% interest rate) and investing in AUD (4.5% interest rate). The expected carry profit is approximately:
A) 0.1% per year B) 4.5% per year C) 4.4% per year — the interest rate differential D) Indeterminate without knowing future spot exchange rates
Answer: C — The carry trade earns approximately the interest rate differential: 4.5% − 0.1% = 4.4% per year, before accounting for any exchange rate moves. If the AUD depreciates against JPY, the carry gain may be offset or exceeded by the exchange rate loss — this is the fundamental risk of carry trades, which tend to "earn a nickel and lose a dollar" in tail events.
---
Q4. An international equity manager holds exposure to the Malaysian ringgit (MYR), which is thinly traded with limited forward market liquidity. She decides to hedge using the Singapore dollar (SGD) as a proxy. The primary risk of this approach is:
A) The SGD forward market is also illiquid B) The MYR/SGD correlation may break down in stress periods, leaving the hedge ineffective precisely when protection is most needed C) Proxy hedges are prohibited under GIPS standards D) The interest rate differential between MYR and SGD will create excessive hedge costs
Answer: B — The fundamental risk of proxy hedging is correlation breakdown. During normal periods, MYR and SGD may move together, making SGD an effective proxy. During stress (e.g., emerging market crisis), correlations between currencies can diverge or even reverse — the hedge fails at the worst possible time.
---
Q5. A manager is choosing between a static 100% hedge ratio and an active dynamic hedge ratio for a EUR-denominated portfolio. The primary argument for a dynamic hedge ratio over a static hedge is:
A) A 100% static hedge completely eliminates all portfolio risk B) A dynamic hedge ratio allows the manager to profit from currency moves while still limiting downside, capturing alpha when views on EUR/USD are accurate C) Static hedges require daily rebalancing, making them more expensive D) Dynamic hedges are required by the CFA Institute for institutional mandates
Answer: B — A static 100% hedge eliminates currency risk but also eliminates any opportunity to benefit from favorable currency moves. A dynamic hedge ratio lets the manager reduce the hedge when expecting EUR to appreciate (capturing upside) and increase the hedge when expecting EUR to depreciate (protecting against downside). The tradeoff is that dynamic management requires accurate currency views to add value.
---