What is the ASX 200 and how do you trade it?

The ASX 200 is a stock market index that tracks the share performance of the 200 largest companies listed in Australia, weighted by each company’s market value. It is widely used as a benchmark for the Australian market and as a barometer of national investor sentiment. It is comparable to other large indices such as the FTSE 100 in the UK, and Dow Jones or the S&P 500 in the US.

Key Takeaways 

• The ASX 200 tracks the 200 largest companies listed on the Australian Securities Exchange, weighted by market value, and is the country's most closely watched market benchmark. 

• It covers just under 80% of total Australian share market value , so it works as a proxy for the market and a broad indicator of the national economy. 

• The index is highly concentrated. The top 10 companies make up more than 50% of its value, led by BHP at over 12%, and financials and resources together account for more than half the index. 

• You cannot buy the index directly. Traders take a position through instruments such as index CFDs, ETFs and futures, or by trading its individual constituents. 

What is the ASX 200? 

The ASX 200 is one of the most widely traded indices of the Australian Securities Exchange (ASX). Of the 2000+ companies listed in the ASX, the ASX 200 index tracks the movements of the top 200 companies by market capitalisation – that is the market value of the company’s outstanding shares. With the top 200 companies accounting for slightly more than 80% of the entire Australian share market capitalisation, it is often seen as an indicator of the Australian equities market, and is one reason why the ASX 200 is the most closely watched Australian index.

The ASX 200 index was launched in 2000, as a joint initiative between the Australian Securities Exchange and global financial business Standard & Poor's (S&P). The composition of the index is evaluated every quarter, with companies promoted or demoted according to movements in their share price over the past six months or other eligibility criteria such as the liquidity of shares on issue.

What companies are in the ASX 200? 

While the ASX 200 covers 10 sectors, including telecommunications, healthcare and industrials, it is dominated by financial and resources stocks, which account for more than half its value. The financials category alone, which includes the four major banks, makes up close to 30% of the index. 

The index is also dominated by a handful of large companies. The 10 largest make up more than 50% of the index. BHP Group Limited is one of the largest companies listed, weighted at more than 12% of the whole as of August 2026. The dominance of this small group of companies and the concentration of value in a couple of sectors is something investors should be aware of when using the ASX 200 as a benchmark, as a movement in banking stocks, for instance, can have a significant impact on the overall index. 

Top 10 companies in the ASX 200 by market cap 

 Source: ASX Top 50 by Market Cap. Market Cap and stock prices are used as reference and  updated daily 

Why is the ASX 200 important?

The companies that make up the ASX 200 account for around 80 percent of Australia’s $A2 trillion share market. This means the ASX 200 serves as a useful proxy for the Australian market and can be taken as a decent indicator of the national economy. It is also used as a benchmark for investors and funds to compare performance.

How to trade in the ASX 200？

You cannot trade the ASX 200 directly, because the index is just a number that measures how its 200 companies are performing as a group. What financial product providers such as CMC  offer products designed to reflect movements in the index.. When the index moves, the price of the product moves generally in the same direction, so you can take a position on the whole index through a single instrument.  

A contract for difference (CFD) is one such product. It is an agreement to exchange the difference in the index's price between the point you open a trade and the point you close it. Because these products are usually traded on margin, both potential profits and potential losses are magnified, which makes them higher risk.

One of our top traded index products is the Australia 200 - Cash, which is based on the ASX 200. Depending on your trading strategy, you can go long or short, react to market moves in real time, and benefit from tight spreads on one of the most followed benchmarks in Australia. 

Trade ASX 200 ETF CFDs 

An exchange-traded fund (ETF) is a basket of assets you can trade like a single share. ASX 200 ETFs hold the index's companies in different ways, and you can take a position on them through ETF-based CFDs, depending on your strategy. For example, the ASX 200 Resources ETF gives greater weight to the resources and mining companies within the ASX 200. Before buying into an ETF, traders should consider the ASX 200 sector makeup, as movements in the financial or materials sectors, for example, may have significant impacts on the value of the ETF. 

Trade ASX 200 option futures CFDs 

Futures are contracts based on the future price of the index. A standard futures contract is a common way people can trade the ASX 200. This is where you agree to exchange a quantity of the index with another party at a predetermined future date and price. These are usually traded on margin, with the trader putting up part of the capital and borrowing the rest from the broker, which magnifies both potential gains and potential losses. 

Other Australian indices

Accumulation index

One thing worth noting is that the ASX 200 is a measure of a price change, which is ideal for speculators – those who are essentially betting whether a price will go up or down in the hopes of making a short-term return – but it doesn’t give investors all the information they need about total returns. For that, they need to look at the S&P/ASX20 Accumulation Index, which includes the impact of dividends.

All Ordinaries index

The All Ordinaries Index is Australia's other key market indicator. The index represents the 500 largest companies listed on the ASX. It differs from the ASX 200 in that liquidity is not a factor in eligibility and market cap is the only thing considered for companies to be listed, with the exception of foreign domiciled companies.

Others indices

• ASX 20 Index is comprised of the 20 largest stocks by market cap under the same under the same liquidity guidelines as the ASX 200. It is the narrowest index of the Australian index family.

• ASX 300 Index provides additional depth and coverage to the ASX 200 whilst maintaining liquidity guidelines.

• ASX Emerging Companies Index represents the performance of companies ranked outside the ASX 300.

Why the ASX 200 belongs on your watchlist?

Tracking the performance of Australia's largest companies, the ASX 200 serves as a key indicator of the overall market. Due to the strict liquidity guidelines of the index, it is particularly relevant for institutional investors and those looking to make more stable investments.

Trade the ASX 200 CFD with CMC Markets 

You can gain exposure to the ASX 200 through these methods and more with CMC Markets.  

Trade on over 80+ cash and forward contracts on global indices. Practise first with a free demo account loaded with $10,000 in virtual funds, and work through the guides and market insights in our CFD Knowledge Hub. When you're ready, the CMC platform gives you advanced charting, 115-plus technical indicators and customisable alerts. 

Open an account or try the demo to start trading the ASX 200.. 

Disclaimer: This article provides general information only. It has been prepared without taking account of your objectives, financial situation or needs. It is not to be construed as a solicitation or an offer to buy or sell any financial instruments, or as a recommendation and/or investment advice. It does not intend to support an investment decision and it should not be relied upon by you in evaluating the merits of investing in any financial instruments. You should consider your objectives, financial situation and needs before acting on the information in this article. CMC Markets believes that the information in this article is correct, and any opinions and conclusions are reasonably held or made on information available at the time of its compilation, but no representation or warranty is made as to the accuracy, reliability or completeness of any statements made in this article. CMC Markets is under no obligation to, and does not, update or keep current the information contained in this article. Neither CMC Markets nor any of its affiliates or subsidiaries accepts liability for loss or damage arising out of the use of all or any part of this article. Any opinions or conclusions set forth in this article are subject to change without notice and may differ or be contrary to the opinions or conclusions expressed by any other members of CMC Markets.