The New Zealand dollar extended its decline to a seven-week low.

New York Federal Reserve President William Dudley talked up the prospects for US interest rate hikes.

The kiwi increased to 72.17 US cents as at 8am in Wellington from 71.82 cents late yesterday.

New Zealand Refining's annual profit sank 69 per cent from a record a year earlier.

Donald Trump's address before Congress tomorrow Federal Reserve Chair Janet Yellen's talk on Friday are seen as the major events this week.

The New Zealand dollar rose after the US Treasury indicated it would take time for fiscal policy reform to impact the US economy.

The Federal Reserve's latest meeting showed concern that a strong greenback could hurt US economy.

The kiwi traded at 71.62 US cents as at 8am in Wellington, having sunk as low as 71.27 cents ahead of the GlobalDairyTrade auction.

Kate McKenzie became the sole woman at the head of an NZX50 company when she started her new job as Chorus chief executive yesterday.

The New Zealand dollar fell in subdued trading as traders looked ahead to the GlobalDairyTrade auction this week and the release of minutes of the latest Federal Reserve meeting.

The kiwi traded at 71.84 US cents as at 8am in Wellington.

The kiwi may test new multi-month highs against the greenback as optimism about US President Donald Trump's economic policies starts to wane.

Fisheries groups have teamed up to oppose Trans Tasman Resources' second bid to mine iron sands from the ocean floor in New Zealand's Exclusive Economic Zone.

The kiwi rose after stronger-than-expected US inflation figures stoked talk of global 'reflation' which will hasten central bank moves to tighten monetary policy.

The NZD fell after Federal Reserve chair Janet Yellen kept open the chance of a rate hike.

Rubicon and private investors have agreed to buy Tenon's Clearwood for US$55m.

Trans Tasman Resource will try again in hearings starting this week to get permission to mine iron sands from the ocean floor in New Zealand's Exclusive Economic Zone.

NZX annual profit dropped 62 per cent as the stock market operator faced mounting costs from the protracted Ralec litigation.

Shares dropped, led lower by Chorus and Vector on regulation news, while A2 Milk Co and Trilogy gained.

The Tower board said the deal would not impact Tower insurance policies or the rights of policy holders.

Hellaby Holdings will delist from the NZX by March 8, after ASX-listed auto firm Bapcor succeeded in its $352 million takeover.

The New Zealand dollar slipped as Federal Reserve Philadelphia president Patrick Harker talked up the chances for an interest rate hike next month.

Harbour Asset Management has sold down its stake in Intueri Education Group.

The New Zealand dollar was little changed above 73 US cents having gained following weak US wage inflation figures.

NZ shares gained, led by A2 Milk Co and Fisher & Paykel Healthcare, while Metro Performance Glass plunged after disappointing investors.

NZ dollar continued to ease back ahead of the three-day weekend on signs that a recent rally may be running out of steam.

Solid Energy has announced the closure of the Spring Creek Mine after failing to find a buyer.

Solid Energy will shut and seal the Spring Creek mine after failing to find a buyer for the shuttered Dunollie operation on the West Coast.

Intueri Education Group will quit Australia by the end of the year after losing federal government subsidies.

Cash trading volumes on the NZX slowed in January, continuing December's trend, while the value of trading rose despite fewer small trades.