The Australia 200 is based on Australia’s leading share market index. This contains the 200 largest Australian companies by market capitalization. All constituent stocks are listed on the Australian Securities Exchange, and the index is considered the benchmark for Australian equities. Some notable components include BHP, Rio Tinto, Telstra, and Westpac, representing the mining, technology, and financial industries. The size and diversity of the index mean that it’s considered to be a particularly accurate representation of the economy. Spread bet or trade CFDs on Australia 200 - Cash.