The Australian share market remains subdued as investors await a meeting between the US and Chinese leaders at the G20 summit in Japan.

The benchmark S&P/ASX200 index was down 11.7 points, or 0.18 per cent, to 6,654.6 points at 1200 AEST on Friday, while the broader All Ordinaries was down 8.8 points, or 0.13 per cent, at 6,734.2.

The energy sector was leading losses at noon, sliding 1.4 per cent as a whole, closely followed by the mining sector.

BHP was down 1.64 per cent to $41.26, Rio Tinto was down 2.36 per cent to $103.75, and Fortescue Metals was down 1.47 per cent to $9.045.

The financial and tech sectors made strides into positive territory, with the latter mirroring a strong performance from their counterparts in the US overnight.

Afterpay was up 2.16 per cent to $28.43, Appen was up 3.45 per cent to $28.315 and Xero was up 0.15 per cent to $60.84.

The big four banks all gained, with ANZ up 0.49 per cent to $28.52, Commonwealth Bank up 0.61 per cent to $83.51, NAB up 0.34 per cent to $26.84, and Westpac up 1.03 per cent to $28.43.

Healthcare stocks were flat while utilities have gained 0.54 per cent collectively.

Shares in agricultural feed company Ridley Corporation are 2.45 per cent lower at $1.195 after it cut its profit guidance and announced the departure of its chief executive.

Chinese President Xi Jinping and US President Donald Trump are expected to meet on Saturday amid hopes of easing trade tensions between the two countries.

On Wall Street overnight, the Dow Jones Industrial Average finished down 0.04 per cent, the S&P 500 was up 0.38 per cent and the tech-heavy Nasdaq Composite was up 0.73 per cent.

The Aussie dollar is buying 70.01 US cents, from 69.94 US cents on Thursday.