S&P/ASX Australian Indices Methodology

Index Objective

The S&P/ASX Australian Indices measure the performance of ASX-listed companies across various sizes, industries, themes, and strategies. Each index is designed to represent a certain segment of the Australian equities market.

The S&P/ASX Australian Indices family was created with the formation of the relationship between S&P Dow Jones Indices and the Australian Securities Exchange (ASX).

Index Family

  • S&P/ASX 20. The index measures the performance of 20 actively-traded and highly liquid securities that are among the largest securities listed on the ASX by float-adjusted market capitalization.
  • S&P/ASX 50. The index measures the performance of 50 of the largest and most liquid index-eligible stocks listed on the ASX by float-adjusted market capitalization.
  • S&P/ASX 100. The index measures the performance of the 100 largest stocks listed on the ASX by float-adjusted market capitalization. The index represents both the LargeCap and MidCap components of the S&P/ASX index family.
  • S&P/ASX 200. The index measures the performance of the 200 largest and most liquid stocks listed on the ASX by float-adjusted market capitalization.
  • S&P/ASX 300. The index measures the performance of 300 of the largest, highly liquid securities listed on the ASX by float-adjusted market capitalization. The index includes the LargeCap, MidCap, and SmallCap components of the S&P/ASX index family.
  • S&P/ASX MidCap 50. The index measures the performance of the Midcap component of the S&P/ASX 100, excluding the LargeCap component.
  • S&P/ASX Small Ordinaries. The index measures the performance of companies included in the S&P/ASX 300, but not in the S&P/ASX 100.
    • S&P/ASX Small Ordinaries Select. The index measures the performance of SmallCap companies with positive earnings within the S&P/ASX Small Ordinaries.
  • S&P/ASX Mid-Small. The index measures the performance of companies included in the S&P/ASX 300, but not in the S&P/ASX 50. The index is a combination of the S&P/ASX MidCap 50 and S&P/ASX Small Ordinaries indices.
  • S&P/ASX All Australian 50. The index measures the performance of 50 of the largest, by float-adjusted market capitalization, highly-liquid ASX-listed securities defined as ‘domestic’ or ‘Australian’1 for index purposes. This index is the Australian component of the S&P Global 1200.
  • S&P/ASX All Australian 200. The index measures the performance of 200 of the largest, by float-adjusted market capitalization, highly-liquid ASX-listed securities defined as ‘domestic’ or ‘Australian’ for index purposes.
  • All Ordinaries. The index measures the performance of the total Australian equity market and is composed of the 500 largest securities listed on the ASX, with no liquidity screen or minimum IWF requirement. The index is the only member of the S&P/ASX index family not weighted by float-adjusted market capitalization.

GICS® Indices

The indices are designed to measure the performance of various sectors and industry groups within the Australian equities market, as defined by the Global Industry Classification Standard (GICS).

For more information on GICS, please refer to S&P Dow Jones Indices’ Global Industry Classification Standard (GICS) Methodology.

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