EUR/USD — characteristics of the most important forex pair

EUR/USD is the most traded currency pair in the world. According to the Bank for International Settlements Triennial Survey of 2022, it accounts for twenty-two point seven percent of global daily forex turnover — against turnover of some 7.5 trillion dollars a day, that works out at roughly 1.7 trillion dollars of exchange in this pair alone. Second in line, USD/JPY, held thirteen point five percent at the time; third, GBP/USD, just under ten. The pair combines the currencies of the two largest economies on the planet, and its profile — high liquidity, narrow spread, readable trends, clean reaction to macroeconomic releases — makes it the natural first choice for every retail client.

Why this pair specifically

EUR and USD together represent over forty percent of global GDP. The eurozone produces around fifteen trillion dollars of output a year, the United States about twenty-five. EUR/USD belongs to the group of major pairs — characterised by the highest liquidity, tightest spreads and most well-defined trends of any pair category. Every international transaction between Europe and the US flows through this pair, and multi-billion-dollar positions held by hedge funds, commercial banks, and central banks use it as the principal channel for currency risk exposure.

The second layer is liquidity. The more participants trade the same instrument, the tighter the spread brokers offer, because they compete for the client. For that reason EUR/USD carries the tightest spread on the whole currency market, whatever model your broker runs on: at intermediaries keeping their own book (a dealing desk) it is wider than on ECN accounts, but still lower than on any other pair.

The third layer is the self-reinforcing effect. Everyone trades EUR/USD, so beginners pick it as well, which deepens liquidity and entrenches the pair’s dominance. In the BIS surveys the lead in turnover over the second-place pair runs to close to nine percentage points, and it has held for many years.

Quote anatomy — bid, ask, spread

A EUR/USD quote shown on a trading platform consists of two prices: a sell price (bid) and a buy price (ask). The difference between them is the spread — the broker’s transaction cost paid by the client opening and closing a position. Most brokers now quote with five decimals — the fourth decimal is a full pip, the fifth is a pipette (one tenth of a pip), used for more precise execution.

Pip size translates directly into money. A pip on EUR/USD is 0.0001 of a dollar, and the result of a position is always counted in the quote currency — here, the dollar. A standard lot covers 100,000 euros, so one pip is worth 0.0001 × 100,000 = 10 dollars; a mini lot (0.1) gives one dollar per pip and a micro lot (0.01) gives ten cents. On an account denominated in another currency that amount still has to be converted at the current dollar rate, so pip value expressed in, say, zlotys moves with USD/PLN — in dollars, however, it stays fixed.

In practice, during the London session at a good ECN broker the EUR/USD spread runs one to three pipettes (0.1 to 0.3 pip). During the Asian session it widens to three to five pipettes. In the minutes around US macroeconomic releases — CPI, NFP, an FOMC decision — the spread can briefly blow out to ten or fifteen pipettes, a full pip, due to liquidity withdrawal on the interbank market during the first reaction.

Typical moves — daily, weekly, monthly range

The daily range on EUR/USD measured by the fourteen-day average true range (ATR-14) usually sits, in quieter stretches, somewhere in the region of a few dozen pips. Volatility rises and falls in waves, so this is not a number to memorise once and for all — you check it on your own chart from time to time, because it defines the scale of a typical single-session move.

It pays to know the anomalies too. On 15 January 2015 the Swiss National Bank unexpectedly removed the franc’s floor — the shock overturned the franc pairs above all, but it travelled through the whole market, and EUR/USD moved sharply that day on markedly widened spreads. In March 2020, in the opening weeks of the covid-19 pandemic, daily ranges on the pair reached four hundred pips. Days like that are remembered as a lesson about risk, but position size is planned on the basis of current volatility.

Peak hours — when to trade

EUR/USD generates most of its movement in the overlap of the London and New York sessions — from two to five in the afternoon Warsaw time. That window usually produces the largest share of the pair’s daily range. Before it, from eight in the morning until two, the European session leads, with smaller but technically cleaner moves (less noise, more readable chart formations). After five, European closes overlap with US afternoon positioning; late in the evening the Pacific session opens in Sydney, and Tokyo follows at around one in the morning — the hours of lowest volatility on EUR/USD.

Practical consequence: if you trade on M15 or H1 and need price range for realistic entries and exits, the two-to-five in the afternoon Warsaw time window offers the most opportunities. If you trade on D1 or W1, the hour at which you open a position matters less, because you hold it across many sessions.

"EUR/USD is to the retail trader what the S&P 500 is to the stock investor — the first and often only pair worth memorizing: typical range, peak hours, fundamental drivers, the nearest technical levels. Only after that does it make sense to expand the portfolio into crosses and exotics." — Kathy Lien, Day Trading and Swing Trading the Currency Market, Wiley, 2016.

Correlation with the dollar index DXY

The dollar index DXY is a weighted average of the US dollar against a basket of six currencies. The composition was set in 1973 by the Federal Reserve and has not changed since the introduction of the euro in 1999: euro 57.6 percent, Japanese yen 13.6 percent, British pound 11.9 percent, Canadian dollar 9.1 percent, Swedish krona 4.2 percent, Swiss franc 3.6 percent.

Because the euro makes up nearly sixty percent of the basket, DXY and EUR/USD move in almost opposite directions — when DXY rises (the dollar strengthens globally), EUR/USD falls, and vice versa. The correlation coefficient between them can run close to minus one — one of the strongest and most durable relationships on the entire currency market, although its exact value shifts with the period over which it is calculated.

The practical consequence matters. Whenever you analyze EUR/USD, first ask: is the move euro-specific or dollar-wide. A EUR/USD rise after a strong German PMI is euro-specific — DXY will not react meaningfully. A EUR/USD fall after a hawkish Fed decision is dollar-wide — DXY will rise, and every dollar pair will react in the same direction (USD/JPY up, GBP/USD down, AUD/USD down).

What governs the long term — the Fed and ECB rate differential

The long-term direction of EUR/USD is largely a function of the interest-rate differential between the Federal Open Market Committee (FOMC) and the European Central Bank (ECB). When US rates are higher than eurozone rates, capital flows into dollars in search of higher Treasury yields, which strengthens the dollar and weakens EUR/USD. When the differential narrows or reverses, the direction flips.

The market does not wait for the decisions themselves — it prices them in advance, on the basis of inflation, labour-market data and the language coming out of both central banks. So before you judge the direction of the pair, check the current federal funds rate and the ECB deposit rate, then answer one question for yourself: is that gap set to widen or to narrow?

What to do tomorrow

1. Write down the current ATR-14 for EUR/USD. Open the EUR/USD D1 chart on your platform, add the ATR indicator with a period of fourteen, and write down the value in pips. This is the scale of a typical daily move you should know by heart when sizing positions. Refresh this number once a month — it shifts with market volatility.
2. Compare the EUR/USD spread at three of your brokers. At three PM Warsaw time (middle of the London-NY overlap), open the client panel of each broker you are considering and write down the bid/ask spread on EUR/USD. At a good ECN it should sit in the 0.1-0.3 pip range. If any broker shows a spread above a full pip in this hour, the model is not suited to scalping or day trading.
3. Open the DXY chart side by side with EUR/USD. In TradingView or in your broker platform, display both charts in a horizontal layout. After two weeks of daily observation you will start to intuit whether a move is euro-specific or dollar-wide. That reflex will save you many wrong trades.
4. Add the upcoming release calendar to your weekly plan. Every Monday at eight in the morning, open ForexFactory or Investing.com, filter for USD and EUR high-impact releases (red flags), and write the times into your calendar. Those are your hours of heightened attention — either you trade the release deliberately, or you close positions before it.