Tokyo stocks dived to a two-month low Monday as worries over Britain's EU vote next week sparked a rally in the yen that hammered exporters including Toyota and factory robot maker Fanuc.

The benchmark Nikkei 225 index slumped 3.51 percent, or 582.18 points, to 16,019.18 by the close, while the broader Topix index of all first-section shares was down 3.47 percent, or 46.18 points, at 1,284.54.