AAP

The competition watchdog has raised concerns about the way Aldi, Coles and Woolworths treat suppliers when dumping products from their supermarket shelves.

The Australian share market is slightly higher after a choppy morning as traders hold positions before US voters head to the polls.

Oil prices have risen more than 1 per cent, supported by a rebound in other asset classes after news that US presidential candidate Hillary Clinton will not face charges over her email server use, but gains were capped by a rallying US dollar and doubts over OPEC's planned production cuts.

The Australian dollar has comfortably breached the 77 US cents barrier and also has risen strongly against the yen and the euro on news the FBI had closed its investigation into Hillary Clinton's email server use.

Gold prices have fallen, posting their biggest one-day drop in five weeks as the US dollar and stocks rallied on news Hillary Clinton will not face criminal charges over her use of a private email server.

Usman Khawaja and Peter Nevill showed admirable resistance on day five of the first Test but couldn't stop South Africa recording a 177-run win over Australia late in the second session at the WACA.

The Australian share market has closed more than one per cent higher as investors speculated that Democrat presidential candidate Hillary Clinton's chances of winning the US election had improved.

The majority of UGL's directors are recommending the engineering group's shareholders accept Spanish-controlled construction giant CIMIC Group's $524 million takeover bid.

Westpac shares jumped after the bank reported a flat full-year cash profit of $7.82 billion.

The Australian share market has opened more than half a per cent higher.

Oil futures have fallen by their biggest weekly percentage decline since January of around nine per cent as signs of tensions resurface between Saudi Arabia and Iran that could scupper a key supply cut pact.

The Australian dollar has slightly strengthened against its US counterpart, despite a steady US jobs report that has reinforced the likelihood of a Federal Reserve rate rise.

Gold has steadied, heading for its biggest weekly rise since mid-September as jitters over next week's US election offset a solid payrolls report that shored up expectations for a US interest rate rise in December.

Mitch Marsh's spot in the Test squad is hanging by a thread following his latest failure with the bat, as Australia was all out for 244 by 3pm.

Mining explosives maker Orica has flagged a cautious outlook for the 2017 financial year despite swinging to a full-year profit on the back of sharp spending cuts and improving commodities prices.

Big falls across the financial and energy sectors pushed the share market to its lowest level in more than four months, amid mounting uncertainty of the outcome of next week's US presidential election.

Australian shares have opened lower following weak leads from overseas, with financial and energy stocks pulling the market into the red.

The S&P 500 fell for an eighth straight session on Thursday, its longest losing streak since the 2008 financial crisis, as Facebook shares weighed and investors grappled with uncertainty over next week's US presidential election.

The Australian dollar has strengthened further against its US counterpart, helped by increased commodity prices.

Oil prices have settled more than one per cent lower as investors reeled from a record weekly surge in US crude inventories, and remained sceptical about whether OPEC can actually implement its planned output cap.

Gold has edged higher in response to a lower US dollar and also uncertainty about the outcome of a tight US presidential race.

Australian spearhead Mitchell Starc sizzled, while the Marsh brothers snaffled spectacular catches, as South Africa reached 7-176 at tea on day one of the first Test at the WACA.

The possibility of Donald Trump winning the US presidency continues to unnerve investors but bargain-hunters pushed the Australian market to a flat close after a poor start on Thursday.

Celebrity chef Jamie Oliver says he's excited to take on the Australian chain of restaurants that bear his name after the collapse of their previous owner.

The state election next year looks set to be a close one, with two polls this week showing conflicting shifts in popularity among the major parties.

ANZ Banking Group's full-year cash profit dropped 18 per cent to $5.89 billion following a big hit from restructuring charges, and the bank is looking at further streamlining its business.

The Australian share market has opened lower following negative leads from European and US markets overnight and a further drop in oil prices.

The Australian dollar on the back of higher commodity prices as a risk-averse mood about the US presidential election weighs on greenback.

Oil prices have tumbled three per cent after a record weekly build in US crude inventories stoked investor worries about a global supply glut, days after analysts estimated higher monthly OPEC crude output.

Gold has rallied to a one-month high, as uncertainty over the outcome of the US election knocks stocks and the US dollar lower, but bullion pared gains slightly after the Federal Reserve held interest rates steady as expected.

Concerns about the impacts of a win by Republican candidate Donald Trump in the upcoming US election have unnerved investors and pushed Australian shares to a six-week low.

Virgin Australia has joined rival Qantas in announcing a tough start to the year, with soft demand pushing the number two carrier to a first-quarter loss.