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Joined 2 years ago
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Cake day: July 1st, 2023

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  • The inch/cm analogy only works if the conversion rate is fixed. Currencies aren’t like that. Their conversion rates change over time. That changing conversion is part of the return when you compare countries. That’s why you need to put everything in one currency first, then calculate the percent change.

    Your analogy actually proves my point: if the ‘inch’ changes relative to the cm over time, then you’d have to convert all measurements to one unit before comparing how fast trees grow, even though the percent growth itself is unit-free.


  • Both titles are accurate.

    Even for people living in the country, local-currency returns can be misleading. If your stock goes up 10% but your currency falls 15%, your global purchasing power is down. That’s why exchange rate-adjusted returns matter whether you’re local or international. It measures your real return.

    Whether the post fits in this community or not, idk, but the comment I replied to asked an economic question about exchange rates.


  • Yeller_king@reddthat.comtoBuy European@feddit.uk*Permanently Deleted*
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    25 days ago

    If you want to have a graph that shows the return on stocks across countries, which is what the title indicates, you have to convert everything to a single currency before calculating the percent changes. It doesn’t matter which currency you choose either. It would make no sense to compare the percent changes without this conversion as then you wouldn’t be measuring the real rate of return for the assets in each country.

    Thinking of it as an internal thing doesn’t make much sense to me as the graph draws a comparison across countries.

    I don’t understand how my point is out of place. I’m addressing the original question about whether exchange rates need to be accounted for.


  • Yeller_king@reddthat.comtoBuy European@feddit.uk*Permanently Deleted*
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    25 days ago

    When you compare different countries, you have to look at returns in one currency. Otherwise the numbers aren’t comparable. FX moves are just part of the real return from a global perspective.

    Put another way, suppose an American buys an Argentinian asset and then Argentina experiences 1000% inflation but the price of the asset goes up 900%. Are you telling me that you think the Argentinian stock market is doing great? The point of using the same unit across countries is to avoid this issue.