Nuplex has been in secret talks with one of its rivals and says it has received a good offer.

The sharp decline in oil prices is a simple case of economics 101, writes Brian Gaynor.

Last month's sharemarket turmoil hasn't prompted the private equity owners of Tegel Foods to chicken out of plans to take the poultry business public.

Digital legal tender could combine the inventiveness of private virtual currencies with the stability of a government mint.

The New Zealand dollar hit a three-week high against the yen after the Bank of Japan introduced a negative interest rate policy, weakening its currency.

Australasian infant formula stocks have proved a pretty good bet lately.

The New Zealand dollar is heading for a 1 per cent gain against the greenback this week as commodity currencies came back into favour on the prospect of further stimulus in Europe and a rebound in oil prices.

The last gold dredge operating on the West Coast is up for sale.

New Zealand shares fell following oil-driven weakness in US and European markets, with Nuplex Industries and Sky Network Television while Air New Zealand rose.

Oil prices have hit record lows - and expect them to go lower.

If you need to sell shares or are about to retire and need to calculate your superannuation payout, then even a few weeks fall in prices may start to look like a serious bear, writes Michael Rafferty.

BHP Billiton will write down the value of its US shale assets by NZ$11.19 billion amid collapsing oil and gas prices.

A new year, and it appears Just Water International boss Tony Falkenstein isn't looking to back down from being a thorn in the side of sharemarket operator NZX.

While stock plunges in countries like the US can pose major economic challenges because of the impact on household wealth, that's less been the case in China.

New Zealand shares fell for a fourth day as fears over China's economy cloud global markets.

Oil prices have hit a new 11-year low, adding weight to calls for more cuts in the Reserve Bank's official cash rate.

What Wall Street has taken to calling the FANG stocks - Facebook, Amazon.com, Netflix and Google - had an amazing year, with gains ranging from 34 to 178 per cent.

The Kiwi dollar has started the new year weaker as concerns about the Chinese economy and heightened tensions in the Middle East prompted investors to sell higher risk assets.

Oil prices rose on the last day of the year but fell as much as 35 per cent for 2015 after a race to pump by Middle East crude producers.

Figuring out a price tag for some of the world's biggest and rarest diamonds can be as difficult as finding them.

New Zealand shares rose to a record as A2 Milk Co continued its strong rally, with Westpac Banking Corp, Meridian Energy and Sky Network Television all advancing on light trading.

Maui natural gas pipeline has been sold to First State Investments.

The petrol pump war has moved up a gear with Z petrol stations entering the fray and slashing prices.