What is the S&P/ASX 200 Index?

The S&P/ASX 200 Index (INDEXASX: XJO) is Australia's benchmark share market index. Launched in April 2000, it comprises the largest 200 companies on the Australian Securities Exchange by float-adjusted market capitalisation. It is one of a number of indices published by S&P Dow Jones on Australian markets (called the S&P/ASX family of indices).

Is the ASX 200 a benchmark index?

According to index provider S&P Global, the S&P/ASX 200 has replaced the All Ordinaries Index as the key institutional benchmark index for the Australian market. Companies are listed on the ASX 200 by their float-adjusted market capitalisation.

How are companies listed on the ASX 200?

Companies are listed on the ASX 200 by their float-adjusted market capitalisation. This method measures the market capitalisation of shares readily available in the market and excludes those held by company insiders and promoters.