Investing in overseas assets opens up a world of investment opportunities that are unavailable at home.
Take technology. European investors can only gain access to the world’s tech giants if they venture outside their home markets. There is no European Silicon Valley, after all.
The trouble is, international investing comes with additional complications.
That’s because on top of the underlying asset, investors also buy into the currency in which an international security is denominated.
And currencies are tricky beasts – because they can be volatile and unpredictable they have the potential to impact portfolio returns, sometimes positively, sometimes negatively.
When a foreign currency appreciates against an investor’s base currency, that works in the investor’s favour, adding to any gains associated with the underlying investment.
However, the opposite is also true. When a foreign currency falls against an investor’s base currency – it can erode, or even wipe out, any returns from the underlying investment. There’s no free lunch.
The impact from currencies is most keenly felt among investors who hold a portfolio of international bonds since the return from fixed income securities is typically lower than it is for equities.
In other words, if the US dollar falls 5 per cent against the euro in a year, its effect will be greater for euro zone based investors who own US government bonds than for those who hold US stocks.
Experience shows that the world's major currencies, such as the euro, move up or down by approximately 10 per cent per year, which makes them twice as volatile on average than US government bonds but half as volatile as equities.1
This is why fixed income investors in particular may want to consider hedging their portfolio's currency risk.
Take the example of a euro zone-based investor holding a portfolio of US high yield bonds.
Over a long-term horizon, the investor would have secured a higher and more stable return had she used a currency-hedged investment vehicle rather than portfolio that did not offer protection from exchange rate movements.
Fig. 1 hedgng bets
Performance of US high yield debt, based in EUR, hedged vs unhedged, indexed
Bloomberg Barclays US High Yield 2% Issr Cap TR Index (Unhedged EUR/Hedged EUR) from 31.12.2001-30.06.2018. Source: Bloomberg
But currency-hedged bond investments – which use instruments known as forward exchange forward contracts (a more detailed explanation is below ) – don’t always deliver better returns.
A currency can, in fact, appreciate or depreciate for an extended period of time – months, or even years – sometimes moving way beyond what economists consider to be a fair level.
This means that investors who opt to insure themselves against adverse moves in exchange rates also forego the opportunity of securing positive returns from currency trends that go in their favour.
The events of 2008 and 2009 highlight why currency hedging can be counterproductive in fixed income. Then, US high yield bonds were falling sharply as investors were worried about a wave of company defaults (Fig.1, shaded area). At the same time, however, the US dollar was gaining in value because of the currency's defensive attributes. This meant that euro-based investors who had opted to insulate themselves from moves in the USD/EUR exchange rate experienced a significantly bigger drop in their investments compared with their non-hedged counterparts, whose portfolios were cushioned by the appreciating greenback.
Currency hedging for investors
There are various ways for investors to manage their currency exposure (Fig. 2).
Fig. 2 currency hedging at a glance
Source: Pictet Asset Management
A popular option is to outsource the task of currency hedging to a third party, typically the fund administrator, via what's known as currency-hedged share classes.
Currency-hedged share classes aim to minimise the impact of substantial currency swings on the portfolio return.
Investors get peace of mind, in exchange for a fee that works much like a premium on an insurance policy.
Such vehicles allow investors to gain access to types of investment that aren't traditionally available in certain currencies – such as emerging market debt in euros or US high yield bonds in the Swiss franc.
Investors who have a strong conviction in the future trajectory of their base currency can easily switch from one share class to another, while staying fully invested in the underlying asset class.
It is important to remember, however, that currency-hedged share classes cannot completely eliminate the risks associated with movements in exchange rates2. The cost of currency hedging can fluctuate too (see Fig. 3), which also has an impact on portfolio returns. The cost of a currency hedged investment vehicle has three components to it.
Interest rates: a currency hedge uses instruments known as foreign exchange forwards. These are contracts in which two parties are obliged to exchange a pre-determined fixed amount of (foreign) currency for the (base) currency at a specified future date. The cost of these contracts - or the future exchange rate at which the transaction takes place - is primarily determined by the difference in the interest rate of the base currency and the foreign currency. This pricing mechanism dictates that the currency with the lowest interest rate will change hands at higher exchange rate in the future. So, if interest rates in the US and euro zone were exactly the same, the hedging cost would be close to zero and a EUR-hedged share class of a portfolio of US bonds would return the same as its USD counterpart. But if US interest rates were to rise and those in the euro zone were to fall, the currency hedging cost would rise for EUR-based investor.
Admin fee: investors are required to pay the cost of managing hedged share class, typically 5 basis points per year. This is usually incorporated in the fund administration fee.
Transaction costs: market spreads, known as euro/dollar basis swap, mean there is a cost to enter into spot, forward or swap contracts. The more illiquid a currency pair is, the higher the cost. Transaction costs typically rise towards the year end due to thin liquidity.
fig. 3 up and down
Fluctuations in hedging costs
12-month average hedging costs calculated by the sum of 3-month differentials between USD Libor and Euribor and 3-month euro/dollar cross-currency basis swap. Source: Pictet Asset Management, Bloomberg. Data covering period 08.01.2002 - 31.12.2018
Currencies as a source of return
Many global bond portfolios treat currencies as a distinct source of return and risk. They deploy what are known as currency overlay strategies to benefit from both long and short-term trends in the foreign exchange market as well as swings in currency hedging costs.
Pictet Asset Management runs a number of fixed income strategies that actively manage currency exposure in this way. Broadly speaking, our aim is to identify and invest in unjustifiably cheap currencies to enhance portfolio returns.
One example is the Pictet-Absolute Return Fixed Income strategy, whose base currency is the dollar. Its active currency positions in the fourth quarter of 2018 included investments in the Japanese yen, which appreciated against the US currency, benefiting the portfolio. In the same period, currency positions contributed some 50 basis points to the strategy’s performance.3
Investment managers of the Pictet-Emerging Local Currency Debt strategy, meanwhile, made investments in the Argentine peso late last year in the belief the currency was due a sustained rebound after its recent sharp fall. The currency investment contributed positively to the portfolio's return as the peso gained nearly 10 per cent against the dollar in the final three months of 2018.
Exchange rate fluctuations, then, can greatly impact the return on investors’ portfolios, positively or negatively. If you thought currencies are a zero sum game, think again.
Mickael Benhaim joined Pictet Asset Management’s Fixed Income team in 2006 and is the Head of Fixed Income Investment Strategy & Solutions. Prior to assuming this role in April 2017 Mickael was Co-Head of Global Bonds. Before joining Pictet he was Head of Euro Aggregate Fixed Income for AXA Investment Managers where he worked for five years. Mickael has more than 20 years professional experience that includes working at the Dresdner Group and BNP Paribas Group. Mickael holds a MSc in Mathematics and a post-graduate degree in stochastic models from the University of Paris Jussieu and Paris Panthéon-Sorbonne.
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