Australian shares have opened higher as the financial sector led gains after ANZ lifted first-half profit.

The benchmark S&P/ASX200 index was up 26.3 points, or 0.42 per cent, to 6,351.8 points at 1015 AEST on Wednesday, while the broader All Ordinaries was up 24.2 points, or 0.38 per cent, to 6,442.6.

The big four banks – Commonwealth, NAB, Westpac and ANZ – all advanced, recouping some of their losses of the previous day as the sector as a whole gained 0.80 per cent.

It follows a mixed session on Wall Street overnight, with the Dow Jones Industrial Average finishing up 0.15 per cent, the S&P 500 up 0.10 per cent and the tech-heavy Nasdaq Composite down 0.81 per cent.

The Aussie dollar is buying 70.52 US cents from 70.37 US cents on Tuesday.