Tokyo stocks jumped more than three per cent on Friday morning following the dollar’s surge past the 100 yen mark overnight, underscoring the Japanese currency’s sharp decline in recent months.

The benchmark Nikkei 225 index rose 3.09 per cent, or 438.99 points, to 14,630.47 in mid-morning trading, while the broader Topix index of all first-section shares was up 2.26 per cent, or 26.70 points, to 1,208.50.