NZX dropped 1.9 per cent to $1.05 and Z Energy fell 1.8 per cent to $7.
Fletcher Building declined 1.8 per cent to $6.51. Its chief transformation officer Lee Finney has resigned, two years after being appointed in what was then a new position by former chief executive Mark Adamson.
"Fletcher has a new CEO who is well-regarded from what he's achieved in his background, so he'd be looking to put his own people in," Goodson said.
Synlait Milk led the index higher, jumping 9.7 per cent to $7.84. Goodson said the share price movements were hard to understand, particularly given changes announced last week by A2 Milk which sees A2 forge a close supply relationship with Fonterra, which market watchers have seen as limiting Synlait's future growth with A2.
Air New Zealand gained 3.8 per cent to $3.29
Trade Me Group rose 2.3 per cent to $4.40. The company, which operates New Zealand's largest online auction site, said earnings didn't budge in the first half as its expenses grew faster than revenue. It expects full-year profit to grow at a slower pace than last year.
CBL Corp, suspended from trading at $3.17, announced it won't release its accounts for the year ended December 31. The company went into voluntary administration on Friday after the Reserve Bank of New Zealand's successful High Court application to appoint interim liquidators to CBL Insurance to maintain the assets of the Kiwi insurer.
Outside the benchmark index, Tower rose 1.5 per cent to 68 cents. It has reached a settlement with reinsurer Peak Re over a dispute relating to its 2015 adverse conditions cover and will get about half what it has claimed.
Auckland-based Tower will receive $22m of the $43.8m claimed under the reinsurance contract and all sums claimed in arbitration proceedings. Writing off the residual amount will reduce annual profit by about $15.2m.
"That really de-risks the balance sheet, it's one more risk removed from that company," Goodson said.