Japan's Nikkei share average rises to highest since July 1990

The Nikkei jumped as high as 31,529.23 early in the session, before last trading up 1.9% at 31,494.06. The yen weakened to the cusp of 141 per dollar for the first time in six months. A weaker currency buoys the value of overseas revenue among the Nikkei's exporter-heavy components. Of the Nikkei's 225 components, 201 rose, while 15 fell and nine were flat.

Japan's Nikkei share average rose to its highest level since July 1990 on Monday, buoyed by optimism over a U.S. debt ceiling deal and a weaker yen. The Nikkei jumped as high as 31,529.23 early in the session, before last trading up 1.9% at 31,494.06.

The yen weakened to the cusp of 141 per dollar for the first time in six months. A weaker currency buoys the value of overseas revenue among the Nikkei's exporter-heavy components. Of the Nikkei's 225 components, 201 rose, while 15 fell and nine were flat.