Chapter 3 - EUR/USD Is the Output, Not the Explanation

A chart is one of the most efficient forms of compression in financial markets.

A chart is one of the most efficient forms of compression in financial markets. Within a single line or sequence of candles, it records the combined outcome of decisions made by banks, investment funds, corporations, central banks, governments, hedgers, algorithmic systems and individual traders. The EUR/USD chart shows exactly where the market reached an agreement at a particular moment. But it does not tell us why. When EUR/USD rises, the immediate conclusion is often that the euro has become stronger. When it falls, the move is commonly described as euro weakness. Both statements may be correct. Neither is necessarily complete. Both statements may be correct, but recognising the complexity of underlying forces helps traders feel respected and better equipped to interpret market movements. Very different underlying processes can therefore produce the same visible price movement. This is the central limitation of analysing the euro through EUR/USD alone: the chart shows the outcome. Still, it does not reveal the complex forces behind it, underscoring the need for broader analysis. The chart accurately records the market outcome, but it does not identify the underlying forces that created it, highlighting the need for a multi-factor approach to understand currency movements. The first article in this series examined the euro within the global capital-flow system. The second described it as a network connecting economies with different structures, risks and sensitivities. This third article moves one step further. It asks how all those forces become compressed into a single market price, and why that price cannot explain itself. EXECUTIVE SUMMARY: • The EUR/USD chart shows the market outcome, but not what caused it. Price is the result of many overlapping forces, not a simple indicator of euro or dollar strength. Always compare EUR/USD with other currency pairs and broad market indicators to better differentiate between euro strength and dollar weakness, enhancing analysis accuracy. • Market reactions depend on expectations, positioning, and the current regime-not just on economic data or events. Adopting a disciplined, multi-factor approach (currencies, yields, sentiment, positioning, market regime) can empower traders and build confidence in their analysis and decisions. • Price strength does not always signal fundamental improvement; currencies are priced relatively, not absolutely. • There is rarely a single explanation for any currency move. Treat market analysis as a probability exercise, not a search for certainty.

A currency pair is a relationship, not an absolute measurement.

EUR/USD does not measure the euro in isolation. It measures the changing relationship between two currencies and, behind them, two large economic and financial systems. A rise in EUR/USD can occur because: • expectations for the euro area improved; • expectations for the United States deteriorated; • The European Central Bank became relatively more restrictive; • The Federal Reserve became relatively less restrictive; • European assets became more attractive; • US assets became less attractive; • global investors reduced their demand for dollars; • Several of these processes happened simultaneously. This creates an identification problem. In this context, an identification problem means that we cannot easily determine the true source or cause behind a change in EUR/USD just by looking at the chart. For example, if EUR/USD rises, it is difficult to tell whether this move was driven primarily by euro strength, dollar weakness, or a mix of factors influencing both sides of the currency pair. The chart shows the direction and scale of the adjustment, but it cannot tell the observer which side of the currency pair initiated it. Consider two simplified situations. In the first, EUR/USD rises while the euro also strengthens against sterling, the yen, the Swiss franc, and other major currencies. European bond yields increase relative to comparable foreign yields, European equity markets attract capital, and macroeconomic expectations for the euro area improve. This looks like broad euro strength. In the second, EUR/USD rises while GBP/USD, AUD/USD and other dollar pairs also move higher. The euro remains flat or weak against non-dollar currencies, while US yields decline and expectations for Federal Reserve policy become less restrictive. The EUR/USD chart may appear similar in both situations. The underlying market story is not. In the first case, the euro can lead the move. In the second, the dollar may be driving it. Looking only at EUR/USD removes this distinction.

Price is the final stage of a longer process.

Economic information does not move the market mechanically. A data release, a central bank statement, or a political development does not translate directly from a news headline to a candle. Between the event and the price movement lies a chain of interpretation and action: information → interpretation → expectations → positioning → order flow → price First, information enters the market. Then participants evaluate what it means. They compare it with previous expectations, decide whether their existing positions remain suitable and alter their exposure. Only after those decisions create buy and sell trades does the information become visible in price. This matters because the same information may be interpreted differently by different participants. A higher-than-expected inflation reading in the euro area may lead one investor to expect a more restrictive ECB. Another may focus on the damage higher inflation could cause to household demand and economic growth. A third participant may already have anticipated the release and use the initial market reaction to take profit. A corporation may buy or sell euros for operational or hedging reasons unrelated to a directional view on the economy. The resulting candle aggregates all these actions. It does not preserve their intentions. Research on foreign-exchange microstructure has repeatedly shown the importance of order flow, the imbalance between buyer-initiated and seller-initiated transactions, in transmitting dispersed information into exchange rates. Order flow is closely related to short-term exchange-rate movements because it captures the decisions participants make after interpreting available information. The chart, therefore, records the outcome of the market’s information-processing mechanism. It does not display the mechanism itself.

Markets move to expectations, not only to events.

One of the most common mistakes in currency analysis is comparing the market reaction directly to the published event. A central bank raises interest rates, but its currency falls. Inflation exceeds expectations, but the currency does not strengthen. Economic growth disappoints, yet the exchange rate rises. These reactions may appear irrational when the event is examined in isolation. The missing element is usually the market’s prior expectation. Financial markets do not respond only to whether an economic value is high or low. They respond to the difference between the new information and what was already reflected in prices. A rate increase may weaken a currency when traders had expected a larger increase. A weak economic release may produce little reaction when market participants had already positioned for an even worse result. An apparently neutral central bank decision may trigger a major movement when the accompanying communication changes the expected future path of interest rates. Federal Reserve research has shown that exchange rates are sensitive to changes in expected monetary-policy paths, not simply to current policy rates. Historically, unexpected increases in US monetary-policy expectations have been associated with dollar strengthening against other currencies. The mechanism is relative rather than absolute. What matters for EUR/USD is not simply whether the ECB or Fed raises rates. It is how expected policy in the euro area changes relative to expected policy in the United States and how that change compares with previous market pricing. This is why the same decision can generate different market outcomes at different moments. The event may be similar. The expectation embedded in the price is not.

A movement in EUR/USD may begin outside Europe.

It is tempting to interpret every EUR/USD movement through the lens of European information. However, the euro operates inside a financial system in which the United States and the dollar have disproportionate global influence. US interest rates affect global borrowing costs. US Treasury securities serve as major reserve and collateral assets. The dollar plays a central role in international funding, trade invoicing and risk management. Changes originating in the United States can therefore transmit across currencies and financial markets even when there has been no comparable change in the euro area. ECB research on euro-area financial markets identifies an important role for US spillovers and global risk shocks alongside domestic European factors. The results show that euro-area financial conditions are determined by a complex interplay among local shocks, developments originating in the United States, and changes in global risk sentiment. For EUR/USD analysis, this leads to an important conclusion: A movement involving the euro does not necessarily originate in Europe. EUR/USD may rise after weaker US labour market data, as investors reduce expectations for future Federal Reserve rate hikes. It may fall when US yields increase, even without a material deterioration in European data. It may also move in response to a global risk shock that increases demand for dollar liquidity or safe assets. In each case, the chart changes. But the causal impulse may have originated on the other side of the Atlantic or outside both economies.

The dollar is not simply the denominator.

In EUR/USD, the dollar is sometimes treated as a passive unit against which the euro is measured. In reality, the dollar is an active global financial factor. Its behaviour does not reflect only the domestic US economy, but also: • demand for safe and liquid assets; • International dollar funding conditions; • global leverage; • cross-border investment; • risk appetite; • the availability of collateral; • expectations for US monetary and fiscal policy. During periods of stress, the dollar may strengthen even when the original source of uncertainty lies within the United States. This can happen because global investors require dollars to repay liabilities, meet margin requirements, reduce leverage or move into liquid assets. Conversely, the dollar may weaken when investors become more willing to hold riskier foreign assets or when expected returns on US assets decline relative to alternatives. EUR/USD, therefore, contains two overlapping stories: • the changing valuation of the euro; • The changing global role and demand for the dollar. A chart of EUR/USD cannot separate them, lacking additional context.

A currency can strengthen without becoming fundamentally healthier.

Another important distinction is the difference between price strength and structural improvement. The euro can appreciate because: • Short positions are being closed; • markets had become excessively pessimistic; • US conditions deteriorated faster than European conditions; • investors are reducing dollar exposure; • A risk event was resolved temporarily; • Interest-rate expectations shifted for a limited period. None of these necessarily means that the euro area’s structural economic position has improved. A currency is priced relatively. It does not need to represent a strong economy in absolute terms. It only needs to become more attractive or less unattractive than the alternative currency. This is especially important for the euro because, as discussed in the previous article, it represents a network of economies rather than a single national structure. A rise in EUR/USD may coexist with: • weak euro-area growth; • political fragmentation; • widening sovereign-bond spreads; • declining industrial competitiveness; • divergent economic conditions among member states. The movement may still be real and tradable. But it should not automatically be interpreted as evidence that the basic structural problems have disappeared. Price describes the market’s present balance. It does not certify long-term economic condition.

Positioning can change the meaning of the same information.

Market reaction depends not only on new information but also on how participants were positioned before it arrived. Suppose traders have built unusually large short positions in the euro. A mildly positive European release may then produce a disproportionately strong rise in EUR/USD because traders rush to close those positions. The price movement is not caused solely by the strength of the new information. It is amplified by the structure of existing exposure. The opposite can also happen. When the market is already heavily long the euro, positive news may fail to generate further gains. Most participants who wanted to buy may already have done so. The announcement can even trigger profit-taking. This creates another identification problem: • a strong move may reflect new conviction; • It may reflect forced position reduction; • It may reflect low liquidity; • It may reflect the unwinding of an earlier consensus. The chart shows the movement but does not disclose which process dominated. Positioning data, including futures-market reports, can provide partial context. Analysts seeking positioning information can consult the US Commodity Futures Trading Commission (CFTC) Commitments of Traders reports, which detail major positions in currency futures. Some central banks and industry groups also publish data on foreign-exchange turnover and flows, such as the Bank for International Settlements (BIS) Triennial Survey and regional trading reports. However, no single dataset captures the entire decentralised foreign-exchange market. Futures positioning represents only one segment, while meaningful activity also occurs through spot transactions, forwards, swaps, options and other over-the-counter instruments. Because of these data gaps, analysts often must triangulate across multiple sources to form a clearer view. This can involve using proxies such as changes in related asset markets, comparing information across different datasets, or watching for confirmation from price action and market reactions. Cross-referencing indicators for example, combining futures position data with observed movement in spot markets or following trends in flows reported by custodians and banks may help compensate for incomplete direct evidence. Where uncertainty remains, it is important to acknowledge these limitations and reflect them in the strength of your conclusions, being clear about where analysis is built on inference rather than complete data. This is one reason why certainty should be replaced by structured probability. In this context, structured probability means framing analysis as a set of informed likelihoods that take account of the available evidence, rather than seeking absolute or definitive answers. Rather than aiming for a single, certain explanation for every market move, analysts should compare possible explanations, weigh the probability of each, and structure their reasoning around the dynamics most consistent with the broader market environment. To apply structured probability in real-world analysis, analysts can use practical techniques such as scenario analysis, assigning probability weights to potential explanations, or mapping possible outcomes with simple decision trees. For example, when faced with a significant move in EUR/USD, an analyst could outline several scenarios such as euro strength, dollar weakness, or shifts in global risk appetite, and assign a reasoned probability to each based on the available data. Consider a recent example: imagine EUR/USD rises sharply after a US data release. The analyst identifies three plausible scenarios: (1) the move is driven by euro strength (probability 20 percent), (2) general dollar weakness (probability 60 percent), or (3) a global risk-on shift that benefits the euro (probability 20 percent). Supporting evidence might include US yields falling and broad dollar indices weakening, while the euro shows only modest gains against non-dollar currencies. As new market data emerges, these probabilities can be updated. This structured approach encourages disciplined thinking, helps guard against overconfidence, and provides a clear rationale for updating views as new evidence emerges. The objective is not to discover a perfect explanation for every candle. It is to determine which explanations are consistent with the wider evidence.

The same driver does not dominate in every market regime.

Currency relationships are unstable because the importance of individual variables changes over time. A 'market regime' refers to the prevailing set of conditions or dominant themes that influence how market participants interpret information and which factors matter most for price movements. A shift in market regime can be recognised by observing changes in the market's reactions to similar data or events, or in correlations between assets, which signal that different drivers have gained prominence. In practice, analysts can look for concrete signals of a regime shift to quickly spot changing environments. The most actionable signals include: sudden spikes in volatility; a breakdown in previously strong correlations (such as EUR/USD decoupling from the yield differential); abrupt changes in price sensitivity to certain economic releases; reversals in cross-asset relationships; increased dispersion of returns across currency pairs; and a notable change in which variables lead the price action. Keeping watch for these signals can help identify when the market is entering a new environment that may require fresh analytical approaches. In one period, EUR/USD may be highly sensitive to interest-rate differentials. In another, energy prices, sovereign risk or global risk appetite might prevail. During a crisis, access to liquidity can become more important than inflation or growth. During a stable expansion, differences in expected central-bank policy may regain influence. Research examining recent global monetary tightening has highlighted that exchange rates do not always move in a fixed relationship with policy expectations. The relevance of specific drivers can vary across episodes, and movements that appear inconsistent with interest-rate differentials may reflect other macro-financial forces. This means that a relationship observed on a historical chart is not automatically a permanent law. A trader may identify that EUR/USD has previously moved closely with a yield spread, an equity index, or a commodity price. That relationship may remain useful. But it must be treated as conditional. The market regime determines which information is currently dominant. Without regime awareness, an analyst may apply yesterday’s explanation to today’s market.

The exchange-rate disconnect

Economists have long examined why exchange rates can be difficult to explain using a small set of observable macroeconomic variables. This issue is often described as the exchange-rate disconnect puzzle. Exchange rates can exhibit large movements while measured macroeconomic fundamentals change only gradually. Models based on conventional variables may also struggle to consistently explain short-term currency fluctuations. This does not mean that fundamentals are irrelevant. It means that the connection between fundamentals and price is not simple, immediate or stable. Multiple factors can contribute to the disconnect: • markets price expected future conditions rather than only current data; • relevant expectations are not directly observable; • different participants possess different information; • order flow transmits private or dispersed information; • risk premia change; • positioning and liquidity amplify movements; • The dominant market regime changes over time. Modern research continues to examine the disconnect between exchange rates and standard macroeconomic variables, including the roles of expectations, risk premia, and financial-market transmission mechanisms. For example, studies have found that much of the short-term variation in exchange rates can be explained by order flow and shifts in investor positioning, rather than by changes in fundamentals alone. Research also highlights that exchange rates often move in anticipation of future policy changes, reacting to surprises relative to prior market expectations instead of to the headline data itself. For practical analysis, this means that analysts should focus not only on economic releases but also on how the new information differs from what was already priced in, and consider positioning and order flow data for additional context. For practical analysis, the lesson is not that exchange rates are random. The lesson is that a single explanatory variable is rarely sufficient.

How to distinguish euro strength from dollar weakness

The limitations of EUR/USD do not make the chart useless. They show why it must be within a wider analytical system. One practical approach is to compare the euro and dollar across multiple relationships. To illustrate how this framework works in practice, consider the EUR/USD rally that occurred on January 12, 2024, when the pair moved higher by approximately 1 percent following the release of US inflation data. Applying the multi-factor checklist: 1. The euro also appreciated against GBP and JPY, indicating that the move was not isolated to the dollar, though the gains were more moderate relative to those crosses. 2. US Treasury yields fell as investors weighed softer-than-expected core inflation, while euro-area yields remained steady, leading to a narrowing yield differential that favoured the euro. 3. US CPI data came in slightly below market expectations, prompting a reassessment of the Federal Reserve's likely policy path and increasing the probability of earlier rate cuts, while there was little major news from the ECB. 4. CFTC data in the week prior indicated that speculative positioning was tilted toward a long-dollar, short-euro stance, suggesting room for position adjustment if sentiment shifted. 5. European equity markets rallied alongside the move in EUR/USD, reflecting improved global risk appetite and renewed capital flows to euro-area assets. 6. Broad dollar indices showed the dollar weakening not only versus the euro but also across a range of major currencies. By systematically checking these factors, an analyst can build a more robust explanation for the price change, rather than relying on the chart alone. Quick checklist workflow for real-time market analysis: 1. Identify the price movement in EUR/USD or another currency pair. 2. Check related currency pairs to see if the move is broad-based (for the euro, look at EUR/GBP, EUR/JPY, etc; for the dollar, look at broad USD indices). 3. Compare changes in euro-area and US yields to assess interest-rate expectations. 4. Review the latest central bank communications and relevant economic data releases for surprises or shifts in forward guidance. 5. Examine available positioning data to look for evidence of short covering or momentum shifts. 6. Look for confirmation from equity and bond market flows or changes in global risk sentiment. 7. Cross-check correlations and market regime signals to ensure your explanation is consistent with broader trends. 8. Update your interpretation as new information or price action emerges. Using this stepwise process helps integrate the checklist into fast-paced analysis and supports a disciplined framework for trading decisions. 1. Check whether the euro is also appreciating against other currencies, such as GBP, JPY and CHF. If EUR is gaining broadly, this suggests independent euro strength. If instead only EUR/USD and other USD pairs (like GBP/USD, AUD/USD) are rising, the move may be driven by general dollar weakness. 2. Compare changes in euro-area and US yields. If European yields have increased relative to US yields, it may indicate that shifting interest-rate expectations are favouring the euro. 3. Review central bank communication and recent data releases: Did the ECB signal a more restrictive stance, or did US data disappoint market expectations? Changes in guidance or surprises in economic data can shift expectations and drive flows. 4. Examine positioning data: Was the market heavily short EUR before the move, possibly triggering short covering? Commitments of Traders reports and other sources can provide clues about speculative positioning. 5. Look for confirmation in wider markets: Are European equity and bond markets attracting new capital? Is global risk sentiment improving, potentially reducing demand for the dollar as a safe asset? 6. Check broad US dollar indices: Is the dollar weakening against a wide basket, or is the move isolated to EUR/USD? By systematically checking these factors, an analyst can build a more robust explanation for the price change, rather than relying on the chart alone. When EUR/USD rises, an analyst can ask: • Is EUR also rising against GBP, JPY, CHF and other currencies? • Is USD weakening across a broad basket? • Are European yields changing relative to US yields? • Are European equity and bond markets attracting capital? • Has the expected ECB policy path changed? • Has the expected Fed policy path changed? • Is the movement consistent with global risk-on or risk-off behaviour? • Are correlations confirming or contradicting the proposed explanation? • Is the move supported across several timeframes? • Does positioning suggest fresh demand or short covering? No single answer provides certainty. Together, they narrow the range of plausible explanations. Figure 1 EUR/USD compared with a broad US dollar index Purpose: demonstrate that a rise in EUR/USD occurring during broad USD weakness is not necessarily evidence of independent euro strength.

Figure 2: EUR/USD compared with a euro effective exchange-rate index

Purpose: demonstrate whether the euro is strengthening against a wider group of currencies or only against the dollar.

Figure 3: EUR/USD and the euro-area–US yield differential

Purpose: show that interest-rate expectations can matter strongly, but the relationship varies across market regimes. The objective is not to replace price analysis. It is to explain the price through multiple forms of evidence.

From chart reading to market-context analysis

Traditional chart analysis asks: What pattern is visible? A larger market-context approach asks: What combination of forces could have produced this pattern, and does the surrounding evidence support that interpretation? This changes the chart's role. The chart is still essential because it shows: • where transactions occurred; • how rapidly the market adjusted; • whether buyers or sellers currently dominate; • where volatility expanded; • where past assumptions failed; • how the market reacted to information. But it becomes one layer of evidence rather than the complete explanation. Price tells us what the market did. Relative currency strength helps identify which currency may have led the movement. Yield differentials provide information about expected monetary-policy paths. Sentiment reveals how accounts and expectations are shifting. Correlations indicate whether a movement is isolated or part of a wider cross-market adjustment. Positioning helps explain whether the market is building exposure or liquidating it. Market-regime analysis pinpoints which relationships are currently most relevant. These inputs do not eliminate uncertainty. They organise it.

The purpose of analysis is not to create certainty.

There is a strong temptation in financial commentary to attribute a single reason to every movement. EUR/USD rose because of inflation. It fell because of the ECB. It reversed because of employment data. This type of explanation is attractive because it creates a logical narrative. But coherence is not the same as causality. Many market explanations are constructed after the price movement has already occurred. A distinct narrative might have appeared equally convincing had the market moved in the opposite direction. A more disciplined approach accepts that: • Several forces may act simultaneously; • The dominant driver may change; • Some information remains unobservable; • Participants interpret the same event differently; • price may react to positioning rather than the headline itself; • An explanation should be treated as a probability, not a fact. The goal is therefore not to produce a perfect story. It is to determine whether the available evidence forms a consistent structure. When currency strength, interest-rate expectations, sentiment, positioning and cross-market behaviour point in the same direction, confidence in an interpretation can increase. When they conflict, the conflict is itself valuable information. It may indicate that the move is fragile, technically driven, position-driven or occurring during a transition between market regimes. In many cases, the most important conclusion is not that a trade should be opened. Disciplined traders recognise when the available evidence is too ambiguous or contradictory to justify taking a position. Signs include conflicting signals from key indicators, a lack of clear alignment across supporting factors such as currency strength, yields, sentiment or positioning, or uncertain market regime conditions. In these situations, standing aside and waiting for clearer confirmation is often the most prudent course. Preserving capital and avoiding unnecessary risk are critical components of effective decision-making, especially when conviction cannot be strongly supported by the evidence. The apparent explanation is not sufficiently supported.

Key Takeaways

• The EUR/USD chart shows the market outcome, but not what caused it. Price is the result of many overlapping forces, not a simple indicator of euro or dollar strength. • Always distinguish between euro strength and dollar weakness by comparing EUR/USD with other currency pairs and broad market indicators. • Market reactions depend on expectations, positioning, and the current regime, not just on economic data or events. • A disciplined, multi-factor approach (currencies, yields, sentiment, positioning, market regime) is essential for robust analysis and successful trading decisions. • Price strength does not always signal fundamental improvement; currencies are priced relatively, not absolutely. • There is rarely a single explanation for any currency move. Treat market analysis as a probability exercise, not a search for certainty.

Conclusion: the chart is evidence, not the cause

EUR/USD is one of the most closely watched currency pairs in the global financial system. It compresses a vast network of information, expectations, capital flows, policy differences, hedging requirements and trading decisions into a single exchange rate. That compression makes the chart useful. It also makes it incomplete. A rising EUR/USD does not automatically prove broad euro strength. A falling EUR/USD does not automatically prove that conditions in Europe have deteriorated. The movement may originate in the euro area, the United States, global risk sentiment, relative asset demand, market posture or a combination of these forces. The chart gives us the result. It does not give us the diagnosis. Understanding the euro, therefore, requires more than observing whether EUR/USD is rising or falling. It requires comparing currencies across the wider market, examining expectations, monitoring capital allocation, recognising changes in positioning and identifying the regime in which the movement is occurring. The strongest analysis does not ask only: What did EUR/USD do? It asks: Which part of the global financial network is most likely responsible, and what evidence supports that conclusion? The difference between those two questions is the difference between reading a chart and understanding the market.

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