The NZX50 was one of two benchmark indices in negative territory across Asia-Pacific, with equity markets getting a strong lead from the US on mounting speculation the Federal Reserve will cut interest rates.
"The market is particularly dull with the Australian holiday," said Mark Lister, head of private wealth research at Craigs Investment Partners.
"New Zealand has been a more stable market through the downtrend of the last few weeks, so there's not really much of a rebound to be had."
F&P Healthcare led the market lower, down 2.5 per cent at $15.25 on a volume of 377,000 shares. That was almost half its 90-day average of 705,000.
Lister said while F&P would get some benefit from the US not pressing ahead with tariffs on Mexican imports, a strong New Zealand dollar has reduced the value of its exported earnings.
Dairy exporters also declined, with A2 Milk down 1.5 percent at $114.19, while Fonterra Shareholders' Fund units fell 1.3 percent to $3.95.
Kiwi Property Group was the most traded stock on a volume of 1.8 million shares. It was unchanged at $1.56.
Meridian Energy was unchanged at $4.38 on a volume of 1.3 million shares.
Spark New Zealand was unusually quiet, with a volume of 776,000 shares, compared to its 5.4 million average. It eased 0.3 per cent to $3.775.
Investore Property posted the day's biggest gain, up 2.9 percent at $1.80 on a volume of just 62,000 shares, about a third of its usual trading.
Vista Group International rose 2 per cent to $5.75, NZX increased 1.9 percent to $1.07, and Gentrack Group advanced 1.7 per cent to $5.40.
Auckland International Airport decreased 0.8 per cent to $8.62, Air New Zealand rose 0.8 per cent to $2.57, New Zealand Refining was down 0.5 per cent at $2.05, and Z Energy slipped 0.3 per cent to $5.97.
The public inquiry into the 2017 refinery to Auckland pipeline failure wrapped up last Friday, with Z chief executive Mike Bennetts saying a circuit-breaker may be needed to accelerate investment in additional jet fuel capacity at Auckland airport.
Bank of New Zealand's 2025 subordinated notes were the most traded debt security with a volume of 990,000. The notes pay annual interest of 5.31 per cent, which resets in December next year. They closed at a yield of 2.89 per cent, down 21 basis points.