One of the oldest and most basic fundamental approaches to determining the “fair” exchange rate of one currency to another relies on the concept of Purchasing Power Parity. This approach says that an identical product should cost the same from one country to another, with the only difference in the price tag accounted for by the exchange rate. For example, if a pencil costs €1 in Europe and $1.20 in the US, the “fair” EURUSD exchange rate should be 1.20. For our purposes, we will use the PPP values provided annually by the Organization for Economic Cooperation and Development (OECD). We compare these values to current market rates to determine how much each currency is under- or over-valued against the US Dollar. Currencies pairs that are undervalued against their PPP exchange rate have the size of the value gap denoted in RED, while those that are overvalued are denoted in GREEN.

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