Editing South Island (section)

===Stock exchanges===
Due to the [[gold rush]]es of the 1860s, the South Island had regional stock exchanges in [[Christchurch]], [[Dunedin]] and [[Invercargill]] – all of which were affiliated to the Stock Exchange Association of New Zealand. However, in 1974 these regional exchanges were amalgamated to form one national stock exchange, the New Zealand Stock Exchange (NZSE). Separate trading floors operated in both Christchurch and Dunedin until the late 1980s. On 30 May 2003, New Zealand Stock Exchange Limited formally changed its name to [[New Zealand Exchange]] Limited, trading as NZX.

Today, the [[Deloitte]] South Island Index<ref>{{cite web |url=http://www.deloitte.com/dtt/section_node/0,1042,sid%253D193345,00.html |title=South Island Index |publisher=Deloitte.com |date=31 December 2006 |access-date=2 August 2010 }}</ref> is compiled quarterly from publicly available information provided by NZX, Unlisted and Bloomberg. It is a summary of the movements in market capitalisation of each South Island-based listed company. A company is included in the Index where either its registered office and/or a substantial portion of its operations are focused on the South Island.