Currency Risk

IntermediateRisk Management2 min read

Quick Definition

The risk that changes in exchange rates will negatively affect the value of international investments when converted back to the investor's home currency.

What Is Currency Risk?

Currency risk (also called exchange rate risk or FX risk) arises when investing in assets denominated in a foreign currency. Even if the foreign investment performs well, unfavorable exchange rate movements can reduce or eliminate gains.

How Currency Risk Works:

  • You invest $10,000 in European stocks (converting to €9,000 at €0.90/$)
  • European stocks rise 10% → €9,900
  • But euro weakens to €0.95/$ → $10,421 (only 4.2% gain in USD)
  • Currency movement ate almost 6% of your return

Historical Impact:

PeriodInternational Stock Return (local)Currency EffectUSD Return
Strong Dollar Period+10%-8%+2%
Weak Dollar Period+10%+7%+17%

Managing Currency Risk:

StrategyProsCons
Do NothingSimple, natural hedge long-termShort-term volatility
Currency-Hedged ETFsRemove FX riskHedging costs (~0.3-0.5%)
Diversify CurrenciesReduces USD concentration riskAdds complexity
Tactical HedgingProfit from FX viewsDifficult to time

For Long-Term Investors:

  • Over 20+ year periods, currency effects tend to average out
  • Hedging is expensive and reduces diversification benefit
  • Unhedged international exposure provides natural USD diversification
  • Consider hedging only fixed-income foreign holdings (where FX can overwhelm small yields)

Currency Risk Example

  • 1A US investor in Japanese stocks gained 20% in yen but only 8% in USD because the yen weakened
  • 2Currency-hedged ETFs like HEDJ eliminate euro exchange rate risk for European stock investments