BHP Billiton is the market's biggest weight, down 2.5 per cent, followed by Rio Tinto down 2.6 per cent and Woodside Petroleum down 2.3 per cent.

CYBG is down 19.5 per cent, Emeco Holdings is down 11.9 per cent and Beach Energy has fallen 8.8 per cent.

CSL is leading the gains with a 1.8 per cent advance, Commonwealth Bank is up 0.6 per cent and Woolworths is trading 1.4 per cent higher.

Trade Me Group is up 16.3 per cent, Carsales.com is up 3.2 per cent and Infigen Energy is up 3.1 per cent.

"We see enormous opportunities to improve our business and we are working very hard to deliver on these opportunities," he said.

"In Australian Food, we remain confident that we have strong plans in place to be 'consistently good' at the fundamentals and to drive further shopping differentiation relative to our competitors."

Sue Mitchell and Julie-anne Sprague has the full story here.

The shares opened at 11am at $12.49, within the range forecast by analysts but well below pre-open bids around $15.00.

Analysts have valued Coles at between $10.89 and $14.52 a share, with a median valuation of $14.20. Based on the 1.33 billion shares held by 530,915 shareholders, Coles had a market value of $16.6 billion.

Sue Mitchell has the full story here.

Ms Nazeri said third-party labour-hire companies paid her below the minimum wage - $12.50 an hour at one farm and $15 at another, in cash - while sometimes working long hours at farms in NSW and Victoria which the National Union of Workers says supplies Woolworths.

Patrick Hatch has the full story here.

Ms Orr spent the morning quizzing Ms Livingstone about her claim the day earlier that she had challenged management during a 2016 board meeting because she was concerned they were downplaying the severity of AUSTRAC's investigation into CBA's breaches of anti-money laundering laws.

Ms Orr took Ms Livingstone to minutes for the bank's board meetings in October, November and December 2016.

Sarah Danckert has the full story here.

BHP Billiton is weighing the index the most with a 2.8 per cent fall, followed by South32 down 5.4 per cent and Woodside Petroleum down 2.8 per cent.

CYBG has fallen 19.6 per cent, Emeco Holdings is down 13 per cent, Beach Energy is down 9.1 per cent and ALS is down 8.6 per cent.

CSL shares are up 1.8 per cent, QBE Insurance has advanced 1.5 per cent and Goodman Group is up 1.2 per cent.

Trade Me Group is up 17.1 per cent, Infigen Energy has risen 3.7 per cent and Corporate Travel Management is up 2.6 per cent.

The Reject Shop's shares have fallen 54 per cent over the past year, from $5.26 to $2.43.

The unconditional offer follows the Reject Shop issuing a profit downgrade last month, when it revised down its forecast from about $18 million to between $10 million and $11 million for the first half.

Patrick Hatch has the full story here.

If Trump and Xi are "friends again, that could see the market erasing at least a portion of the losses," Sydney-based Daghlian said by phone. "It might not be as bad of a year as what it's pointing to at the moment."

The benchmark index has tumbled 11 percent in the past three months as investors face rising global interest rates, falling oil prices, a slowing Chinese economy and increased U.S.-China trade frictions. Those showed no signs of abating during a week of summits that ended Sunday, with U.S. Vice President Mike Pence sharpening criticism of China.

Given the Asia-Pacific Economic Cooperation summit ended in disarray amid tensions between Washington and Beijing, investors aren't expecting anything from the Trump-Xi meeting at the G-20, said Tim Rocks, chief investment officer at Evans and Partners Pty. "The risk is perhaps to the upside if they make some very general statement of intent to work together in the future," he said.

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"In this instance, it appears the ASX is favouring a select group of advisers ahead of shareholders," Allan Gray's Simon Mahwinney told The Australian Financial Review.

"You cannot have a functioning market unless shareholder rights and governance are at the forefront, and this is a blatant example of where this has fallen over."

Jonathan Shapiro has the full story here.