Japan's Nikkei share average breached the 43,000-mark for the first time on Wednesday, with the broader Topix index also scaling a fresh all-time peak, tracking Wall Street's overnight gains and extending the rally to a sixth straight session.

Japan’s benchmark Nikkei 225 index extended its upswing and, for the first time, crossed the 43,000 mark on August 13, while the broader Topix index also set a fresh all-time high. The gains in Japan’s equity benchmarks followed upbeat cues from Wall Street overnight, helping the indices post gains for the sixth consecutive session.

The Nikkei .N225 on Wednesday rose as much as 1.2 per cent in the first few minutes of trade to reach a record 43,241.27.