NZX trading resumes after technical glitch

Trading on New Zealand's stock market has been restarted after a three hour halt caused by technical issues.

A statement from the NZX said its connectivity issues had now been resolved with trading resuming at 3pm.

The NZX decided to halt all trading at 12noon while it undertook an urgent investigation into the problem.

In a statement released at 3pm the company said the operational issue would be fully investigated.

"In the interim, NZX apologises for the halt in trading that occurred today," the stock market operator said.

The halt is the second major outage this year.

In April, the Wellington-based company kept trading open when problems with its data feed kept retail investors in the dark over market announcements and live pricing.

The NZX launched the NASDAQ OMX X-stream trading platform last November as it looks to branch out into new securities trading, including derivatives and commodities.

The stock exchange had a major IT glitch in 2010 when failures in multiple hardware services disrupted index feeds until midday, meaning index pricing, such as the benchmark NZX 50 Index, wasn't available in morning trading.