Mercury, which closed at a dividend yield of 3.23 per cent, led the market higher, up 5.6 per cent at a record $4.94. About 982,000 shares changed hands, more than its 90-day average of 607,000. Chorus, which closed at a dividend yield of 4.13 per cent, rose 4.7 perc ent to $5.62, and Contact Energy advanced 3.1 per cent to $7.92 on a volume of 1.2 million shares. It closed at a dividend yield of 4.5 per cent.
Air New Zealand rose 2.3 per cent to $9.50 after Jarden analysts raised their target price on the stock by 10 cents to $2.70, saying the airline's solid dividend yield - 8.06 per cent - will continue to support the share price over the medium term.
Vital Healthcare, which reports tomorrow, was up 1.2 per cent at $2.605, Precinct Properties New Zealand advanced 2.3 per cent to $1.795 on a volume of 1.9 million shares, and Argosy Property increased 1.1 per cent to $1.41, on a volume of 2 million shares, more than twice its average of 653,000.
Spark New Zealand was the most traded stock on a volume of 4.7 million, more than its 3 million average. It rose 3.5 per cent to $4.12. Infratil, which took a 49 per cent stake in Vodafone New Zealand last week, increased 2.8 per cent to $4.75 with 1.2 million shares changing hands.
Of other stocks trading on volumes of more than a million shares, Meridian Energy was up 3.4 per cent at $4.84, Oceania Healthcare advanced 1 per cent to $1.03, Ryman Healthcare increased 2.3 per cent to $13.30, Arvida Group rose 2.2 per cent to $1.37 and Fletcher Building was up 0.4 per cent at $4.74. Kiwi Property Group rose 1.6 per cent to $1.63 and Goodman Property Trust was up 1 per cent at $2.08.
Fonterra Shareholders' Fund units increased 0.8 per cent to $3.78, and Fonterra Cooperative Group's farmer-owned shares rose 1.3 per cent to $3.79 after the dairy exporter said it couldn't find a buyer for its entire stake in Beingmate Baby & Child Food, and may sell the shares on market in Shenzhen.
Exporters also benefited from a slump in the kiwi dollar after the Reserve Bank cut the OCR. Sanford rose 2.4 per cent to $6.90, Ebos Group increased 1.9 per cent to $24.31, Gentrack advanced 1.6 per cent to $5.23 and Fisher & Paykel Healthcare was up 1.3 per cent at $16.
A2 Milk, which often drives the benchmark index's direction, edged up 0.1 per cent to $16.57, while Synlait Milk increased 0.6 per cent to $9.38.
Cinema analytics developer Vista Group International was the day's worst-performing stock, down 2.7 per cent at $5.50 on a volume of 380,000 shares, in line with its 337,000 average. Pushpay Holdings decreased 1.2 per cent to $3.21.
Mercury's 2049 capital bond paying annual interest of 3.6 per cent was the most traded debt security on a volume of 850,000. The notes closed at a yield of 2.75 per cent, down 15 basis points.