Country and Currency Risk

Scope. MarketClue does not tell any reader whether to hedge currency exposure, does not characterise any country as safe or risky to invest in, and recommends no geographic exposure. This article explains what a foreign holding exposes a portfolio to beyond the asset itself, and how much of the resulting variability is currency rather than investment. All figures use the hub parameters plus stated currency assumptions, and are not forecasts.

They are different in kind — one is a measurable addition to variability, the other is a set of things that are mostly invisible until they happen.

Currency: the arithmetic

An unhedged foreign return is two returns added together — what the asset did locally, and what the currency did against the holder's own. Neither is a choice made separately; buying the asset buys both.

Taking the hub equity variability of 16.0% and adding a currency of stated variability:

Worked example — the currency can supply more risk than the investment. A foreign equity holding with 16.0% local variability and a currency at 14.0% moving with it produces 24.22% total variability, of which 56.3% of the variance comes from the currency. More than half the uncertainty in the outcome has nothing to do with the company, the market or the analysis that led to the holding. And the direction matters as much as the size: a currency at 10.0% variability adds 28.1% of the variance when uncorrelated with the local return, 43.4% when positively correlated, and — in the negatively correlated case — reduces total variability below the local figure entirely, at 16.12% against 16.00%. The same currency is a large risk, a small risk or a partial hedge depending on a correlation nobody controls and which moves. (Total variability is √(σ²ₗ + σ²ᶠ + 2ρσₗσᶠ); the currency's share of variance is (σ²ᶠ + 2ρσₗσᶠ) ÷ total variance, which is why the negatively correlated row can be small or negative.)

The asymmetry that makes currency different from other risks

Currency exposure adds variability without a corresponding expected return. Equity variability is compensated — that is what the equity risk premium is. There is no equivalent standing premium for bearing currency exposure, so on the figures above a holder has taken variability from 16.00% to 18.87% and received nothing in expectation for the difference.

That is the strongest argument for hedging it, and it is not a complete one, because hedging costs money, requires maintenance, introduces its own basis risk, and — for a holder whose liabilities are in their own currency — the exposure being removed may have been genuine. The hedging article covers what protection costs; this portal does not say whether to buy it.

Country risk: the part that is not in the variance

Currency risk shows up in the numbers. Country risk mostly does not, until it does.

Legal and property rights — whether ownership is enforceable, and by whom, against a domestic counterparty.

Capital controls — whether money can be taken out. A holding that cannot be repatriated has a quoted price and no realisable value, which no volatility measure captures.

Political and policy change — expropriation at one extreme, and at the other the ordinary shifts in taxation, regulation and industrial policy that change what an asset is worth.

Accounting and disclosure differences — what must be reported, audited and to what standard, which is the subject of Pillar 23 and varies by jurisdiction.

Market structure and concentration — many national markets are dominated by a handful of companies or a single industry, so buying the market buys a concentrated bet that the index name conceals.