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Japanese Yen Surges as MOF Steals the BOJ's Thunder After FOMC
US Indices 2026-07-31 08:11 source ↗

Japanese Yen Surges as MOF Steals the BOJ's Thunder After FOMC

By Matt Simpson | Thu, 30 Jul 2026

Overview

The Japanese yen experienced a significant rally following a suspected intervention by Japan's Ministry of Finance (MOF), leading to a sharp decline in the USD/JPY pair. This event overshadowed the Bank of Japan's (BOJ) meeting, which was anticipated to provide further insights into Japan's monetary policy.

Suspected MOF Intervention

While official confirmation of the MOF's intervention is pending, the volatility observed in the currency markets suggests that intervention likely occurred. The USD/JPY pair fell nearly 600 pips, marking its largest one-day drop since April, and dipped below the 160 level before finding support just above its 200-day exponential moving average (EMA).

Other currency pairs involving the yen, such as EUR/JPY and AUD/JPY, also experienced significant declines, indicating a broad-based strengthening of the yen against major currencies.

Focus on the BOJ Meeting

As the market shifts its attention to the BOJ meeting, expectations are that the central bank will maintain its current policy rate. However, any hints of a more hawkish stance from Governor Ueda, such as improved growth or inflation forecasts, could further bolster the yen's momentum. Historically, volatility tends to decrease following intervention days, and traders are advised to manage their expectations accordingly.

Extreme Yen Short Positioning

Recent data from the Commitment of Traders (COT) report indicates that traders were heavily short on the yen, with gross short positions among asset managers and speculators reaching near-record highs. This positioning may have set the stage for a potential reversal in the yen's fortunes, as the market was vulnerable to a sudden shift in sentiment.

Technical Analysis of USD/JPY

Given the current market dynamics, establishing a directional bias for USD/JPY is challenging. Key support and resistance levels are identified, with the 160 level serving as a potential resistance point for bearish traders. The monthly pivot point is noted at 151.50, which will change as the month concludes.

For further insights and updates, follow Matt Simpson on Twitter @cLeverEdge.

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Informational only. Not investment advice.