I live in Germany and have invested into the S&P500 over the last couple years. Just now for some reason I am wondering if I am not speculating over the exchange ratio of euros and dollars.

My broker displays me the value of my current funds in EUR, but the "initial" currency of the S&P500 is USD. So assuming the S&P500 remains constant that day but the dollar weakens towards the euro, is it right that my portfolio decreases in value? The process would be:

  • It is sold in USD > Converted in EUR > Paid out to me

But since I dont get as many EUR for each USD as the day before, I would have less paid out money than if I had sold it the day before. So I am wondering: Am I not speculating on the currency ratio EUR:USD when buying an index fund in a foreign currency?

  • Speculating is probably the wrong word to use, as it generally applies to high-risk investments, such as investing in startups. This is just normal currency fluctuation.
    – jamesqf
    Feb 29, 2020 at 18:11

2 Answers 2


I disagree with the existing answer. There is very little exchange rate risk.

Stocks have an inherent protection against exchange rate fluctuations.

Consider when USD strengthens when compared to EUR. This means your investment will increase in value as measured in EUR -- or will it? It's not that simple.

The competitive advantage of US-based companies reduces when USD becomes stronger. Thus, European companies will steal some of the business of US-based companies. Therefore, your investment as measured in USD will decrease in value. This decrease in value as measured in USD will at least partially offset the increase in value as measured in EUR.

Furthermore, most big companies nowadays (S&P 500 is made of big companies) are internationally diversified. So, a company with headquarters in US will likely have business in Europe, in emerging markets, etc. So the profits will have to be converted from euros and emerging market currencies to US. Then you are converting the profits from USD to EUR. Part of the profit was originally in EUR, and undergoes dual conversion (EUR -> USD -> EUR). Yet another part of the profit was in some other currency. Only part of the profit was in USD.

Some stock funds hedge against this (nonexistent) "exchange rate risk". Fortunately, there are only little of these exchange-rate-hedging funds. No intelligent investor will buy an exchange rate risk hedged stock funds. However, exchange rate risk hedged bond funds might make sense -- or then you can buy bonds only in your local currency to avoid the exchange rate risk altogether.


Your reasoning is correct, there is exchange rate risk in this scenario. For larger positions, you could hedge by shorting USD, or but a currency-hedged ETF so you don’t have to do it yourself.

Edit: to clarify, I do agree with juhist that you shouldn’t worry much about this for your long term investment. In the shorter term though, this risk is very much real as these higher-order economic effects don’t always work as expected or take much longer to have effect

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