Technology manufacturer Rakon has responded to a query from the Shareholders Association regarding an "unusual" rise in its share price in the lead-up to a major announcement last week.

Xero, the Kiwi accounting software provider that's yet to turn a profit, is now worth more than $2 billion.

Infant formula is clearly where the action is on the international dairy markets.

It's been a roller coaster week for the New Zealand share market. The NZX 50 fell more than 1 per cent on Tuesday as the Chinese stockmarket fell to its lowest level in four years amid fears of a credit squeeze slowing its economy.

China's Bright Dairy will retain four seats on the eight-member Synlait Milk board, despite the likelihood it will lose its majority ownership status.

Sky TV has taken a big hit over the news of losing the rights to show English Premier League football to TVNZ and Coliseum EPL Management, but there appears to be division over the longer-term impact.

Europe's main stock markets rode out a rollercoaster session after heavy losses in Tokyo on investor fears of central banks pulling the plug on their extraordinary stimulus measures.

The NZX-50 had a flat day yesterday, barely halting its downward trend which kicked off on May 13 - just days after the listing of Mighty River Power.

The New Zealand sharemarket is expected to remain volatile over coming weeks as investors take profits amid jitters over the US Federal Reserve turning off its money tap.

Shares in the newly-listed technology firm SLI Systems are up a further 25 per cent today.

Shares in the newest member of the NZX, SLI Systems, have jumped 18.67 per cent from its initial public offer price.

Fonterra says its opening forecast farmgate milk price had been set at $7.00 per kg of milk solids for the 2013/14 season - up $1.20.

In terms of time spent and where expertise sits, it is rational to leave the running of that business to the board and management, writes Susan Watson.