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 Bank of America survey reveals the iPhone remains China's most popular phone brand.

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.

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.

Kiwis planning to fill up their petrol tanks for summer road trips can save up to 20 cents a litre off their fuel today.

Fund managers say the poor performance of many recent sharemarket floats has impacted investor appetite for new listings.

Just Water International and Coats have revived the controversy regarding the delisting of NZX companies, which was covered in the October 24 column.

OPINION: The savings you can make shopping around for insurance are certainly worth the hassle, writes Mary Holm.

Back in August, it would have been difficult to imagine the S&P/NZX 50 notching up yet another year of double-digit returns.

As the Prime Minister said, "It makes no sense to be calling for emissions restrictions on one hand while subsidising emissions on the other."

More than a few business leaders will be quietly enjoying the troubles of the world's first publicly-listed law firm, writes Christopher Niesche.

The company behind products like Maxigesic will be listed on NZX.

Pacific Edge widened its first-half loss, spending more on the roll-out of products across America.

Mark Lister talks shifts in currency and interest rates have dominated the investment landscape.

New Zealand shares rose to a new record close, led by a2 Milk Co as Australian investors continued to back growing demand for the milk marketer's infant formula.