Nikkei 225 extends decline to 1%

A 1% index decline with no cited catalyst is a reminder that broad risk sentiment can move large-cap benchmarks without a clean narrative, which matters most for readers tracking Japan exposure through index or fund products rather than single names. The absence of an identified driver makes this a sentiment story as much as a fundamentals one. Whether the selling broadens further or reverses once a catalyst emerges is the open question worth watching.