Australia’s largest stocks: The Big 10
Thinking about investing? Check out the top 10 largest companies on the ASX. Log in and add these companies to your watchlist and dive into the exciting world of investing!

1. Commonwealth Bank of Australia - (CBA)
Did you know? CommBank is Australia’s largest bank and also operates CommSec, Australia’s largest online broker.
What they do: Banking and financial services.
Market insight: CBA is not only supporting Bankwest's transition to a fully digital bank, but they're also converting fifteen regional Bankwest branches to CBA branches this year.
2. BHP Group - (BHP)
From the Pilbara to Peru – BHP digs deep as the world’s largest miner, with a hand in almost everything from iron ore to copper.
What they do: Mining and production of iron ore, copper, coal, nickel and potash. BHP supplies essential materials for global infrastructure and clean energy projects.
Market insight: It accounts for nearly 10% of our share market.
3. CSL Limited - (CSL)
CSL is one of the largest influenza vaccine providers, contributing to global pandemic preparedness.
What they do: Develop plasma therapies and influenza vaccines, positioning itself as a global player in biotech and driving medical innovation.
Market insight: CSL Limited has recently signed an exclusive license and distribution agreement with Esperion Therapeutics to commercialize Nexletol® (bempedoic acid), a treatment targeting cardiovascular diseases.
4. Westpac - (WBC)
Westpac is Australia’s very first bank, making history since 1817. It was originally established as the Bank of New South Wales and rebranded as Westpac Banking Corporate in 1982 after merging with the Commercial Bank of Australia.
What they do: Banking and financial services.
Market insight: Westpac is selling its auto-finance business to Resimac Group for $1.4 - $1.6 billion, expected to complete in early 2025.
5. National Australia Bank - (NAB)
NAB is known for its strong community support. They have a program called “NAB Neighbourhood” where employees volunteer to help local communities.
What they do: Banking and financial services.
Market insight: For the third year in a row, NAB has been awarded global recognition as the Best Small Business Bank in Australia.
6. ANZ Banking Group - (ANZ)
Expanding horizons - ANZ operates in 34 markets across Australia, New Zealand, Asia, Pacific, Europe, Middle East and America.
What they do: Banking and financial services.
Market insight: Historically known for offering investors reliable returns with exposure to growing international markets.
7. Wesfarmers - (WES)
Bunnings on a Saturday? That’s Wesfarmers at work – they own it, plus Kmart, Officeworks and more.
What they do: Retail, chemicals, energy and industrial services (and sausage sizzles) - a household name in Australian retail.
Market insight: Wesfarmers used to own Coles before being spun into a separate company in 2018.
8. Macquarie Group - (MQG)
Think big – Macquarie finances projects from solar farms to skyscrapers.
What they do: Banking and financial services.
Market insight: Macquarie makes most of its money from investment banking. This includes helping large companies when they merge with or acquire other businesses.
9. Goodman Group - (GMG)
Goodman group is building warehouses for AI data centres. These spaces are not just for storage but are powering the future of artificial intelligence.
What they do: Develops and manages logistics and industrial properties, supporting the growth of e-commerce and supply chains.
Market insight: GMG recently initiated construction on a data centre project in Vernon, on a portion of the 26 acre site that previously housed a Farmer John meatpacking operation.
10. Telstra - (TLS)
Telstra keeps Australia connected.
What they do: Australia’s largest telecommunications provider, offering mobile, internet and tech solutions.
Market insight: Telstra envisions a highly autonomous network by 2030, able to detect underutilised routes, respond to changes, and detect vulnerabilities to prevent outages.
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