New Zealand shares fell in a generally weaker day across Asia ahead of the EU summit that takes place overnight.
Sanford, which has been indicted on pollution charges in the US, led the decline, chased by Rakon at a record low and Fletcher Building.
The NZX-50 Index fell 13.09, or 0.4 per cent, to 3269.95. Within the index, 27 stocks fell, 14 rose and 10 were unchanged. Turnover was a relatively tepid $67 million. Daily turnover in November was more than $100 million.
Sanford, which is carrying a 14c final dividend, dropped 8.9 per cent to $3.89. The fishing company says it will vigorously defend charges resulting from a US Coast Guard investigation in American Samoa.
They allege Sanford's skipjack tuna vessel discharged bilge water and obstructed justice to conceal its activities. Fines could be up to US$500,000 on each count and more than US$24 million in forfeiture of proceeds. "The stock has been sold off viciously" on the news, said Greg Easton, adviser at Craigs Investment Partners.