USD/JPY climbed to 161.76 on 18 June 2026, its highest level since 2024 and within striking distance of the prior year's peak of 161.919, according to Finnhub. The move has been characterised as a short squeeze, with traders who had positioned for Japanese official intervention around the 160.00 level facing pressure as the pair traded nearly 200 pips above that threshold, forcing reassessment of those positions.

The pair's advance past 161.00 is directly connected to a broader dynamic reported by Bloomberg Markets: the yen is approaching its weakest level against the US dollar in approximately four decades, a milestone that market participants associate with heightened scrutiny from Japanese authorities over potential currency intervention.

In currency markets, USD/JPY is the primary instrument at the centre of this move, reflecting the policy divergence between the US and Japan that Bloomberg Markets cited as a driver of sustained yen depreciation.

No official intervention from Japanese authorities had been confirmed in the reported period. Bloomberg Markets noted that the Bank of Japan maintained its policy stance on 17 June 2026, a decision that preceded the latest leg higher in USD/JPY and was accompanied by yen volatility falling to its lowest level since 2021.

Sources: Finnhub, Bloomberg Markets