Grant Williamson, a director at Hamilton Hindin Greene, said it had been another volatile trading day as the market fell away from its earlier gain.
The ASX's slide "put a lot of pressure on our market today," he said.
Pushpay Holdings led the market higher, climbing 21.5 per cent to $3.11. The mobile payments software developer raised its earnings guidance, saying its church customers were pushing more of their congregations into using digital giving as in-person gatherings get suspended.
Williamson said the index was supported some of the larger stocks with heavier weightings. A2 Milk rose 4.3 per cent to $15.79 and Fisher & Paykel Healthcare advanced 3 per cent to $25.65.
"If you took them out of the equation, we would be down on the day," he said.
Fisher & Paykel raised its earnings guidance yesterday, due to a weaker kiwi dollar and as the virus outbreak stokes demand for its homecare products.
The kiwi dollar fell to an 11-year low, trading at 59.60 US cents at 5pm in Wellington, and providing a boost to exporters.
Fonterra Shareholders' Fund units rose 3.9 per cent to $3.78. Fonterra said first-half earnings recovered but it won't pay a dividend as it seeks to preserve its balance sheet. Rubber goods manufacturer Skellerup Holdings, who counts the US as a key market, rose 2.4 per cent to $1.69, and Synlait Milk rose 1.3 per cent to $4.62.
Heartland Group Holdings rose 1.9 per cent to $1.09 after the lender affirmed its earnings guidance and said it was comfortable with its capital position.
The travel restrictions continued to weigh on businesses exposed to travel and tourism.
Auckland International Airport fell 2.3 per cent to $4.98 with 8.1 million shares trading hands. The company today said in the seven days to Monday 16 March, there was a 25 per cent reduction in international passenger numbers versus last year. On Monday alone, there was a 44 per cent fall in international traveller numbers versus the same day a year earlier.
Air New Zealand remains on a trading halt at $1.54. Analysts expect the government will bail out the national carrier, and Finance Minister Grant Robertson yesterday said the Crown was in talks with the airline, which was specifically excluded form a $600m support package for the aviation sector.
SkyCity Entertainment Group fell 8.7 per cent to $1.99 – its lowest level in two decades – after the casino operator cut $55m from its earnings guidance as New Zealand's travel restrictions cut gaming and accommodation revenue.
Millennium & Copthorne Hotels New Zealand fell 4.6 per cent to $2.29 after it said it wasn't covered by business interruption insurance and that revenue would be down by about $24m in the first half of 2020.
Kathmandu Holdings fell 11.8 per cent to $1.50 after the retailer said travel restrictions imposed in Europe had hit its operations on that continent, and that Australian and New Zealand stores were suffering with reduced traffic.
Vista Group International posted the day's biggest loss, dropping 23.2 per cent to $1.19. The cinema analytics software maker this week withdrew its earnings guidance for 2020 and canned a planned dividend payment for next week.