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For about three years the world's major central banks behaved like one institution with four regional offices. They hiked together in 2022, paused together, and started cutting together in late 2024. That era is over. The ECB decides today. The BoJ, the Fed and the Bank of England all decide next week. |
1 | What Divergence Actually Means |
Divergence is what happens when central banks that used to move together start moving apart. Different directions, different speeds, different reasons. For currencies this is not a background detail. It is the whole game. A currency pair does not have a price of its own. EUR/USD is the price of euros in dollars, which means it is really a price for the difference between what those two currencies offer you. Interest rates are a large part of that. So when two central banks sit in the same place doing the same thing, the pair between them has very little to work with. When they pull apart, the pair moves. The Fed hiking is interesting. The Fed hiking while the Bank of Japan holds is a trade. Right now the gap between the highest and lowest policy rate among the four majors runs to roughly 275 basis points, and that is the reason USD/JPY behaves the way it does. |
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Here is the part I find genuinely interesting, because it is not what you would expect. These four banks did not diverge because four different things happened to them. They diverged because roughly the same thing happened to all of them, and it landed differently on each. The energy shock from the Middle East conflict hit every major economy this year. But an energy shock is not one event. It is a different event depending on how much energy you import, how fast higher costs reach consumer prices, and how much slack your economy has to absorb it. |
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Europe imports a large share of its energy, so the shock arrived fast and pushed euro area inflation up hard. The ECB, which spent 2025 cutting, found itself tightening instead.
The UK is also a heavy importer, and inflation climbed to 2.9% in July on household bills. But growth is soft and the labour market subdued, so the BoE has been split rather than decisive.
Japan imports almost all its energy, which argues for tightening. But higher import costs also squeeze growth, so the BoJ is raising slowly from a very low base.
The United States is far less exposed to imported energy. The Fed's problem is different: inflation that has not fallen back convincingly alongside a labour market that keeps softening. Caught between the two halves of its mandate rather than pushed one way.
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Same shock, four economies, four answers. Divergence is usually not four separate stories. It is one story refracted through different structures. |
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3 | Where the Four Banks Sit Today |
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| Bank | Rate | Position |
| ECB | Decides today | Clearest tightener, energy-led |
| Fed | 3.50-3.75% | Roughly 60/40 on a Sept 16 hike |
| BoE | 3.75% | Split 6-3, small odds for Sept 17 |
| BoJ | 1.00% | Slow tightening from a low base |
One bank clearly tightening, one nearly a coin flip, one split and waiting, one moving slowly up from a very low base. Four positions, four different levels of conviction.
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4 | The Trap: It Is Already Priced |
Knowing that the Fed is at 3.75% and the BoJ is at 1.00% does not give you an edge. Everyone knows that. It is in the price already and has been for months. What moves a currency is not the size of the gap. It is a change in the expected future gap. So when the ECB decides today, the number itself is close to irrelevant if it matches expectations. What matters is what the statement and press conference say about the next few meetings. Hike and signal more to come, expected divergence widens and the euro gets support. Hike and signal that it is finished, expected divergence narrows even though the rate just went up, and the euro can fall on a hike. This is why you regularly see a currency drop after its central bank tightens. The market was positioned for more than it got. Do not ask where rates are. Ask where the market thinks they are going, and whether today's news moved that. |
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Four Decisions in Eight DaysThe ECB today, then the BoJ, the Fed and the BoE next week. FedAndMarkets covers what they signalled and what it means for seven markets. |
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5 | Which Pairs Express Which Gap |
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USD/JPY is the purest divergence trade among the majors because the gap is so wide. It is also why the pair reacts violently to BoJ surprises: a small move from a very low base changes the expected path a lot in percentage terms.
EUR/USD captures the Fed against the ECB, the most interesting matchup right now because both are tightening or considering it. When two banks move the same direction, the pair trades on which one is more committed.
GBP/USD is the narrowest gap of the group. Both banks near 3.75%, both split three ways. Sterling's other drivers are doing more work than usual.
EUR/JPY is the widest spread in a single cross, and it removes the dollar entirely. If you want to trade divergence without a dollar view, this is where it lives.
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6 | What Traders Should Watch |
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Rank the banks, do not just read them. Write down all four with rate and expected direction. The trade is in the gaps between rows, not in any single row.
Watch guidance more than decisions. The decision is usually priced. The signal about the next meeting is what repricing runs on.
Look for widening and narrowing. A widening gap supports a currency persistently. A narrowing one can reverse a trend that looked well established.
Notice when one shock is hitting everyone. Then divergence comes from different exposures rather than different news, and the most vulnerable economy usually moves first.
Respect the crowded side. Wide, well-known divergences attract heavy positioning, especially in carry trades. That makes reversals faster than fundamentals alone would justify.
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Key TakeawaysCurrency pairs are the price of a difference. When central banks move together, pairs go nowhere. When they split, the gaps do the work. The four majors diverged because one energy shock landed differently on four economies with different import exposure, growth, and mandates. The gap you can see is already priced. What you are trading is the change in what people expect that gap to be. Today gives one data point. Next week gives three more. |
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Get This Context Every WeekEvery Sunday, FedAndMarkets breaks down what the world's central banks are signalling and what it means for seven markets. No signals. No predictions. Free every Sunday · 7 markets · No spam |
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When everyone moves together, pairs go nowhere. When they split, the gaps do the work. Just remember the gap you can see is already priced. — Fed'n Markets |
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