Commerzbank Warns BoJ's Cautious Policy Risks Further Yen Weakness Amid Market Doubts

Bearish (-0.7)Impact: High

Published on September 21, 2026 (3 hours ago) · By Vibe Trader

Commerzbank Warns BoJ's Cautious Policy Risks Further Yen Weakness Amid Market Doubts

Commerzbank analyst Thu Lan Nguyen highlights mounting pressure on the Bank of Japan (BoJ) as the Japanese Yen (JPY) continues to weaken, with markets increasingly skeptical about the BoJ's commitment to tighter monetary policy [1]. The BoJ's most recent rate hike has failed to satisfy both domestic officials and international partners, and Nguyen notes that verbal threats of foreign exchange intervention are perceived as insufficient by market participants [1].

Nguyen warns that the BoJ's cautious and delayed approach to further tightening could undermine both the stability of the Yen and Japan's economic growth over time [1]. While short-term threats of intervention may temporarily discourage further Yen selling, Nguyen argues that, in the longer run, only concrete actions—such as credible signals of additional and potentially faster rate hikes—will be effective in defending the currency [1].

The report underscores the persistent uncertainty surrounding the BoJ's priorities, as it attempts to balance preventing further sharp depreciation of the Yen with avoiding economic disruption from aggressive rate hikes [1]. Nguyen cautions that if the BoJ is perceived as unwilling to defend the Yen decisively, it risks losing credibility with investors, which could lead to a situation where even aggressive rate hikes are insufficient to reverse the Yen's decline [1].

Drawing a parallel to Sweden's Riksbank in the early 1990s, Nguyen warns that time is running out for the BoJ, and the longer it delays decisive action, the greater the risk of losing control over both currency stability and economic growth [1].

CONCLUSION

Commerzbank's analysis suggests that the BoJ's current cautious stance poses significant risks to Yen stability and market confidence. Without more decisive action, the Yen may continue to weaken, potentially undermining both the currency and Japan's economic outlook.

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