Outdoor and camping products retailer Kathmandu was the second-worst performer on the index, slipping 38.46 per cent during the year.
Much of this plunge came just before Christmas, when Kathmandu shares slipped to a near two-near low as the company blamed low consumer confidence for a subdued start to Christmas trading in Australia.
It said that because of reduced Australian sales, the total sales increase for the year had dropped from 18.6 per cent in November to 14.1 per cent last month.
While sales in New Zealand and the UK were up on last year, and there was potential for improved performance before the end of the first half of the reporting period, it was unlikely to make up for the drop in Australia.
Kathmandu shares closed down 20.9 per cent because of the news and have since slipped further, ending the year at $2.16.
Dunedin biotech company Pacific Edge was the index's third-worst performer.
Its non-invasive bladder cancer test is now used throughout New Zealand and the US.
The stock was caught in last year's global tech sell-off, dropping 15 per cent in April.
Pacific Edge shares fell 36.09 per cent last year.
• The top 10 best performers was published yesterday.
What the index shows
• A gross index indicates the return to shareholders including price movements and reinvested dividends (excluding imputation tax credits).
• The percentage change between gross index levels at two dates indicates the change in the total value of a portfolio of shares would have been for the period if all dividends were reinvested immediately in the portfolio.