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South Island Index

South Island Index

The Deloitte South Island Index (‘the Index’) was developed in order to establish an objective way to measure and monitor the South Island economy relative to the rest of New Zealand. The Index provides listed companies with the opportunity to gauge how their respective quarterly movements in market capitalisation compare with those of other South Island listed companies. The Index also allows privately held firms and other entities such as council-controlled operations or state owned enterprises to form a view as to where they would place on the Index if they were listed.

First published in April 2008, an audience has emerged that is interested in distinguishing the South Island index’s performance from that of the NZX 50 and the trends highlighted over time are proving to be of ongoing interest to many.

Explore the latest edition of the index below, or dig deeper through previous editions.

Read the latest

  • South Island Index: Storm on the horizon? (27th edition)
    The Deloitte South Island Index experienced its second quarterly decline in a row – its first consecutive decline since the March quarter in 2009 – dropping $117.6 million (1.0%) for the quarter ended 30 September 2014.

How the Deloitte South Island Index is compiled

The Deloitte South Island Index is compiled quarterly from publicly available information provided by NZX, and Unlisted. The Index 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 in the South Island.

The information on listed companies is extracted and summed to provide a cumulative market capitalisation figure for all companies in the South Island. The base period of the Index is 31 December 2006 and for the purposes of the Index this data is given a notional value of one. All subsequent quarterly cumulative market capitalisation totals are divided by the totals for the December 2006 quarter to obtain a relative movement. Market capitalisation will move as a result of capital injections, payments of dividends and capital returns. If a new South Island based company lists on the NZX or Unlisted they will be reflected in the Index as though they were present in the base period.

The Index will only reflect changes in market capitalisation subsequent to listing. If a company is suspended or delisted during a quarter, no data will be included for that quarter and all subsequent periods until the company is re-listed or the suspension lifted. Historical information regarding the company will continue to be included in the calculation of the index. For the purposes of the industry analysis some industry segments have been grouped to provide a more meaningful analysis.

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  • Scott McClay
    Partner - Corporate Finance
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