About the sharemarket

ASX operates Australia’s largest sharemarket, providing a transparent and regulated environment where companies and investors of all shapes and sizes can come together.

Almost 2,200 companies and issuers are listed on ASX. These range from large well established companies to small start up companies.

Market makeup

ASX is the eighth largest sharemarket in the world (based on free-float market capitalisation) and the second largest in the Asia-Pacific region.

Shares are traded electronically on the high-speed and high-capacity ASX Trade platform, and they are settled via the world-leading Clearing House Electronic Subregister System (CHESS).

The companies listed on ASX are divided into 13 sectors, but these are commonly split into just two larger categories: resources and industrial.

Resources includes minerals explorers and producers, and energy companies. Industrials covers all other streams including banking and insurance, telecommunications, information technology, media and transport companies.


Indices measure movement in the value of the market or various sectors of the market, and provide a broad outline as to how the market is performing.

Major ASX indices include the All Ordinaries Index, S&P/ASX 200 Index and the S&P/ASX 20 VIX.

More information on indices.