What makes the “Three-Currency Parity Analysis” the strongest?! What’s different?
What makes Three-Currency Parity Analysis Different
From a user case capturing the sharp move on April 30th that appeared to be yen-buying intervention, we organize the essence of Three-Currency Parity Analysis.
Intervention Aftermath PRO is an MT5 indicator developed to observe the “distortion between currencies” that is hard to see on a single chart’s up and down movements.
A user captured what appears to be the April 30th yen-buying intervention
On April 30th, USDJPY fell sharply from the 160 yen level, and reporting and market estimates suggested a rapid move consistent with yen-buying intervention.In this scenario, a user utilizing Intervention Aftermath PRO reported very happy results.That person confirmed the USDJPY drop by using Intervention Aftermath PRO Catcher, capturing the rapid decline phase.
“If used well, it is the strongest tool.”
“Normally, gains that would take about a week were obtained in just a few hours.”
This case is a very clear example for understanding what Three-Currency Parity Analysis observes.
General analyses look at whether prices go up or down.
Three-Currency Parity Analysis looks at whether there is a distortion.
When analyzing FX, often people judge by looking at charts of a single currency pair, such as USDJPY, EURUSD, GBPJPY. Candlesticks, moving averages, RSI, horizontal lines, and trendlines are all important techniques. However, most common currency-pair analyses basically ask:
In contrast, the core of Intervention Aftermath PRO, which I developed, changes the question.
What is Three-Currency Parity Analysis
For example, if you only look at USDJPY, you only see the movement of USDJPY itself.
However, in the forex market, currency pairs do not exist in isolation. EURUSD, USDJPY, and EURJPY are interrelated.
In actual markets, spreads, tick-update misalignments, liquidity, and broker differences mean they do not perfectly align. Yet, by looking at the relationships among the three currency pairs, you can sometimes observe price distortions that are not visible on a single chart. Three-Currency Parity Analysis is a method to observe this distortion and analyze whether it is returning to its normal relationship or expanding further.IMPORTANT POINT
This is not only about public currency interventions
The April 30th case was a large rapid-change phase believed to be yen-buying intervention. However, Three-Currency Parity Analysis is not limited to such special situations involving government actions or Bank of Japan interventions.
In the forex market, when price relationships become exaggerated or misaligned, demand and supply from large players in the interbank market, liquidity providers, hedge funds, real flows, and algorithmic trading may act to correct the distortion. To avoid confusing with official interventions, this article describes this as“Distortion correction by large-flow participants”.
It is not about predicting the intervention itself, but observing distortions, exaggerations, biases in leading pairs, and signs of regression or expansion that appear in price relationships.
What is important here is that Intervention Aftermath PRO did not predict the intervention. MT5 indicators do not read the news, nor know the actions planned by the Ministry of Finance or the Bank of Japan, nor interpret officials’ intentions.
What is observed is the price.
However, it is not only looking at a single USDJPY chart. It comprehensively views the coherence of the three-currency relationships, three-currency residuals, Z-scores, regression/extension states, current environment, leading pair, costs and distance conditions.
Why is Three-Currency Parity Analysis not well-known
Why is this kind of analysis method generally not well known?
The reason is simple. This practical analysis framework of Three-Currency Parity Analysis is something I, as the developer, devised and implemented in Intervention Aftermath PRO. However, it does not mean I invented entirely new mathematical theories.
The basis is already well-known concepts like triangular arbitrage, composite rates, price coherency, Z-scores, statistical distortion measurement, regression and extension.
What I did was assemble these ideas into a form that FX traders can actually observe on MT5, design it as an algorithm, and repeatedly verify and optimize it using a test EA.
In other words, the novelty lies not in the theory itself but in how existing logics are combined, which conditions are applied or rejected, how noise is reduced, and how observable points are made practical. This accumulation yields the high-quality observational performance of Intervention Aftermath PRO.
The comment I received, “If you master it, it’s the strongest tool,” holds great meaning for me. However, here “strongest” does not mean guaranteed profits or predicting the future.
The “strongest” I take is the ability to view the market not just by one chart’s up and down, but structurally assess the three-currency coherence, distortions, regression or extension, leading pair, and environmental conditions. In other words, it becomes a powerful analytical framework for seeing the market in a more three-dimensional way.
Arrows appear. Z-scores appear. Signals appear. This is the state of being able to use it.
What is really important is what comes next.
We released a教材 for mastering it
This review prompted deep reflection on my part.
I worry that what I understand may not be understood by users in the same way. One of my bad habits is assuming “what I understand must be understood by others.”
However, Three-Currency Parity Analysis differs in its approach from ordinary technical analysis. Therefore, I felt it necessary to organize the logic background, thinking, interpretation, and recording method into proper教材.
A教材 to understand distortion from its essence, observe, record, and verify. It’s designed so Intervention Aftermath PRO can be understood not just as a “signal-reading tool,” but from the essence of Three-Currency Parity Analysis.
Visualize currency distortions with Intervention Aftermath PRO
Intervention Aftermath PRO is an MT5 indicator centered on Three-Currency Parity Analysis, designed to observe intervention phases, rapid-change phases, and distortion corrections that can occur due to large flows.
It structurally helps confirm price relationship distortions from factors like Z-scores, regression/extension, leading pairs, and environmental conditions that are hard to see on a single chart.
The rapid-change phase on April 30th, suspected as yen-buying intervention, was a symbolic example for understanding the value of Three-Currency Parity Analysis.
Intervention Aftermath PRO is not a tool for predicting interventions. It does not guarantee profits simply by following signals.
Nevertheless, observing distortions in price relationships that are hard to see on a single chart and viewing the market in a more three-dimensional way is a strong analytical framework, as you can sense from the user case.
“If you master it, it’s the strongest tool.”
I take this not as a promise of victory but as recognizing it as a powerful weapon for structurally observing market distortions, forming hypotheses, recording, and validating them.
Learn the essence through教材 and observe distortions appearing in actual markets with Intervention Aftermath PRO. Combining these two makes it easier to move from “seeing the display” to “reading the structure.”
※User reviews, past charts, signals, statistics, and case studies do not guarantee future results or profits.
※“Distortion correction by large-flow participants” refers to demand/supply and adjustment flows from market participants other than public currency interventions and does not imply the actions of a specific主体.
※In actual trading, results may vary due to spreads, liquidity, slippage, order conditions, data quality, broker differences, connectivity, and regulatory factors.
※This article is for educational purposes and not investment advice, trading recommendations, or solicitation of particular trades. Please make your own final decisions.