Fisher and Paykel Healthcare, which derives more than half its revenue in the US, lost 0.8 per cent to $9.72 and the exporter may have been impacted after the kiwi currency gained to 70.44 US cents from 70.06 cents yesterday.
Outdoor equipment chain Kathmandu Holdings led the index lower, falling 4.5 per cent to $1.92.
In the other direction, Williamson said that investors were still turning to high yielding stock in a nervous market, which was benefiting Contact Energy, up 0.4 per cent to $5.10 and Spark New Zealand, up 1.3 per cent to $3.58. He noted that telecommunications companies fared much better across the Tasman on the day, which was likely also benefiting Spark. "They have been under significant pressure but have all bounced relatively well today," he said.
Units in the Fonterra Shareholders Fund added 0.2 per cent to $6.05 after whole milk powder prices rose by 3.5 per cent in the latest Global Dairy Trade Auction.
Outside the benchmark index, Williamson noted Scott Technologies continued to have a strong run, adding 3.5 per cent to $3.24. Earlier this month, the company said net profit was $2.89m in the six months ended February 28 versus $1.95m a year earlier. Revenue was $56.7m, up 32 per cent on the year.
Ryman Healthcare rose 1.5 per cent to $8.67. Deutsche Bank lifted its target price 3.4 per cent to $8.27 while Dow Jones Newswires quoted Macquarie as saying it was unlikely to be impacted by a new pay scale that closes a gap between so-called carers and nurses as the raise is being funded by the government.
Looking ahead, investors will remain focused on any news out of the US, including corporate earnings, for direction.