Yen Volatility Sparks Intervention Watch Amid Global Rate Hikes

The yen's recent sharp decline has sparked speculation of rate intervention from Tokyo. The currency dropped 2% last week, leading traders to speculate about a potential rate check from Japanese authorities. A rate check involves officials asking banks for currency quotes to gauge market conditions, which is often seen as a precursor to currency intervention.

The Bank of Japan raised interest rates on Friday to their highest level in 31 years, but the move did not boost the yen as expected. Instead, the currency declined further before reports emerged that Japanese officials had conducted rate checks. The BOJ's messaging has become harder to interpret due to the Federal Reserve's recent hawkish signal.

According to Fred Neumann, chief Asia economist at HSBC, 'the bar remains high for the BOJ to convince markets of its hawkish tilt and anchor expectations when it comes to the yen.' He notes that investors may test the BOJ's resolve in coming weeks and months to match the Fed's tightening.

The euro was little changed at $1.1482 after state elections in northeastern Germany saw the far-right Alternative for Germany take first place, dealing a blow to Chancellor Friedrich Merz's conservative party. The dollar index remained steady at 100.23, with traders pricing in a 55% chance of a rate hike at the Fed's next meeting in October.

Other currencies, such as sterling and the Australian dollar, were also affected by market developments. Sterling last bought $1.339 in early trading, while the Australian dollar fetched $0.7129.