The Deloitte South Island Index of listed companies' market capitalisation booked only modest growth for the second quarter to June, collectively up 2.8% to $543.6 million.
The Deloitte South Island Index measures the values of 31 company shares, on both the NZX and unlisted platforms, that have large exposure to trading in the South Island.
Four of the seven sectors covered posted positive movements in the quarter to June, the primary sector leading the way with a gain of 10.1%, corporate finance partner in Deloitte's Christchurch office Scott McClay said.
"Despite a slowdown in investor sentiment, the medium-sized companies on the index still managed to achieve modest growth," he said.
Dunedin's Scott Technology's capitalisation rose 12% to $230 million, Silver Fern Farm's rose 5.7% to $55.2 million, Blis Technologies' declined 8% to $35.7 million and South Port's, in Bluff, rose 14% to $155.6 million.