Australian shares are down across all industry sectors to start the week, with health care and energy companies were particularly battered.

The benchmark S&P/ASX200 index was down 33.6 points, or 0.48 per cent, to 6895.4 points at 1200 AEDT on Monday, while the broader All Ordinaries was down 32.2 points, or 0.46 per cent, to 7009.7 points.

Energy stocks were down as the price of oil dipped, with Origin Energy falling 1.43 per cent to $8.60 and Woodside Petroleum dropping 1.3 per cent to $35.38.

CSL was down 1.35 per cent to $295.26, dragging the health care sector.

The big four banks were mixed in muted trading.

ANZ dropped 0.2 per cent to $25.07, NAB gained 0.1 per cent to $24.95, Westpac dropped 0.1 per cent to $24.625 and Commonwealth was up half a sent to $82.505.

The goldminers were among a minority faring better.

Evolution Mining gained 6.5 cents, or 1.82 per cent, to $3.64.

The poor start to the trading week comes after US stock indexes on Friday retreated from record highs.

There is hope for a lift in prices soon. A US-China trade deal is expected to be signed on January 15.

The Australian dollar was buying 69.03 US cents, up from 68.79 US cents at Friday’s close.