AAP

Investors have dumped Oz Minerals stocks to 10-year lows after it slashed production guidance in its quarterly update.

South Australia and Tasmania should not be disadvantaged as part of any arrangement between the big states on GST, Opposition Leader Tony Abbott says.

The coalition can't commit to returning the federal budget to surplus in its first term because it can't rely on the government's figures, shadow treasurer Joe Hockey says.

New Zealand's Restaurant Brands, which operates KFC, Starbucks, Pizza Hut and Carl's Jr fast-food brands, has dismissed speculation it might be in the running to buy 40 KFC stores in Western Austra

The Australian market has opened higher with gains across the board except in retail stocks.

Western Australia is still the nation's economic powerhouse, and the gap between the best- and worst-performing states in the country appears to be widening.

The Australian dollar is lower as its US counterpart rallies amid concern about the weak global economic growth.

US stocks eked out a gain on Friday but it wasn't enough to keep the week from ending in the red.

The Australian dollar is higher after gains on stock markets and in the gold price overshadowed a warning from the International Monetary Fund about the currency's value.

The Australian share market has made feeble gains, after resources stocks were spared a further pounding.

NBN Co remains "very comfortable" about staying within its forecast $34.7 billion capital cost for rolling out the National Broadband Network, chief executive officer Mike Quigley says.

Lynas expects demand for its products to grow over the medium term after beginning production of its first separated rare earths products in the March quarter.

Opposition Leader Tony Abbott appears to be backing away from an earlier commitment to deliver a budget surplus in the first term of a coalition government.

Santos is sticking with its full year production targets despite suffering a slide in the first quarter.

Australian stocks have opened firmer, as investors defied a negative lead from Wall Street and took advantage of recent declines to get back into the local market.

Rio Tinto chief executive Sam Walsh says the company will focus on divesting non-core assets as it strives to save $US5 billion ($A4.87 billion) through to 2014.

The Australian dollar is lower as gloom about the global economy continues to weigh on stock markets.

US stocks have fallen for a second day in a row amid mixed earnings reports and gloomy sentiment over recent economic indicators.

Market analysts predict Australia's carbon price could crash to less than $3 per tonne when it links with Europe's emissions trading scheme in 2015.

The Australian share market has closed lower, led by sharp losses among the big miners.

Former West Australian MP Adele Carles has told a Perth court she cannot afford a lawyer to represent her in a defamation case brought by her ex-lover, controversial Treasurer Troy Buswel

Iluka Resources is eager for Chinese apartment dwellers to use tiles in their homes, as the company flags further cuts to production.

Wesfarmers' supermarket chain Coles has lifted its quarterly sales by 6.4 per cent despite it having slashed prices for shoppers.

Fortescue Metals Group is confident of meeting its full year production targets after unveiling its latest quarterly results.

Australian stocks have opened lower, with market players getting out of the resources sector and pouring into the big banks.

Australian businesses may be doing it tough, but at least real estate agents are feeling pretty good.

US stocks have closed sharply lower in the wake of disappointing earnings reports and a 5.5 per cent plunge in Apple shares, along with dreary economic sentiment in Europe.

The Australian share market turned positive again after two days of losses, with investors buoyed by strong overseas leads.

Prime Minister Julia Gillard is still hopeful most of the states and territories will sign up to Labor's schools funding reforms this week, despite the reluctance of Queensland and Western Australia.

Premier Colin Barnett says he isn't punishing Woodside for shelving its Browse gas project by casting doubt on its gas leases.

The federal government is expected to review modelling for its carbon tax in the lead-up to the budget, after a vote in the European Union sent the price of CO2 emissions tumbling.

An inquiry into claims of corruption and fraud at Peel Health Campus south of Perth has found no evidence of compromised patient care, but has made eight recommendations to improve its ma