NZX posted a 28 per cent fall in its net profit for the six months to June 30 and said tighter-than-expected operating conditions, particularly in the second quarter, were expected to continue into the second half.
NZX said a fall in capital markets activity and higher expenses helped drive its net profit down to $3.25 million from $4.5m in the previous corresponding period.
The net profit was at the lower end of the stock exchange operator's earnings guidance.
On July 30, NZX had forecast a first half net profit of between $3m and $4m.
Expenses rose from $14.5m to $16.9m. This included $2.0m of costs associated with changeover of chief executive, with Tim Bennett taking over from Mark Weldon earlier this year. Costs also arose from non-recurring items and the Ralec litigation.