Japanese authorities' intervention to support the yen has triggered a significant reduction in bearish positions. Leveraged funds trimmed net short positions to 61,340 contracts worth $4.9 billion, the smallest in a month. Asset managers also cut short positions by 13,839 contracts, reflecting how official action is unwinding a crowded trade in the currency market.

The pullback followed multiple intervention rounds starting April 30, totaling as much as ¥10 trillion. Japan's top currency official Atsushi Mimura confirmed authorities are prepared to respond to speculative moves, adding that IMF rules don't limit intervention frequency. The yen briefly touched a 10-week high of 155.04 per dollar before paring gains.

While intervention has forced a shakeout in yen shorts, analysts say it hasn't changed the underlying narrative. Japan's currency fell 0.2% to 157.06 yen per dollar on Monday. The currency remains vulnerable to renewed bearish positioning and further intervention should it approach 160 per dollar, highlighting the ongoing battle between market forces and official support.