# 30 leading corporate groups and holding companies in Melbourne

Tamtam tracks 38 corporate groups and holding companies headquartered in Melbourne. This list ranks the 30 largest by number of employees on LinkedIn, led by CSL, Probe Group and Computershare. Their median headcount is 979. Half of them were founded in 1987 or later.

This list features corporate groups and holding companies based in Melbourne. It includes large enterprises such as CSL, a global biotechnology company delivering lifesaving medicines, and Probe Group, a provider of customer experience and business process outsourcing services. Other notable companies are BlueScope, an international supplier of steel products, and Newcrest Mining, a producer of gold and copper. These companies represent a range of sectors, from biotechnology and financial services to mining and manufacturing, indicating a diverse economic landscape.

A significant pattern observed among these Melbourne-based corporate groups is their broad international reach. Many, like Computershare, a global leader in diverse services, and Treasury Wine Estates, which crafts and shares wines globally, operate across multiple countries and continents. This suggests that Melbourne serves as a headquarters for companies with extensive global operations rather than purely local or national focus.

🇦🇺 Melbourne · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [CSL](https://www.tamtam.ai/c/csl-melbourne) (csl.com)<br>A global biotechnology company that delivers lifesaving medicines, vaccines, and therapies, with a focus on advanced technologies to save lives worldwide | Biotechnology Research | 🇦🇺 Melbourne | 23,172 |  |
| 2 | [Probe Group](https://www.tamtam.ai/c/probe-group) (probecx.com)<br>Provider of customer experience and business process outsourcing services combining digital innovation with a people-first approach across global markets. | Outsourcing and Offshoring Consulting | 🇦🇺 Melbourne | 9,782 |  |
| 3 | [Computershare](https://www.tamtam.ai/c/computershare) (computershare.com)<br>Global leader offering diverse services and products across multiple industries, promoting entrepreneurial spirit and service excellence for talented employees worldwide | Financial Services | 🇦🇺 Melbourne | 8,166 |  |
| 4 | [BlueScope](https://www.tamtam.ai/c/bluescope) (bluescope.com)<br>A leading international supplier of steel products and solutions for building and construction markets, focusing on sustainability, innovation, and a circular economy approach | Wholesale Building Materials | 🇦🇺 Melbourne | 7,871 | 1928 |
| 5 | [Newcrest Mining](https://www.tamtam.ai/c/newcrest-mining) (newmont.com)<br>A leading producer of gold, copper, silver, lead, and zinc Known for strong ESG practices, value creation, safety standards, and technical expertise | Mining | 🇦🇺 Melbourne | 6,237 | 1966 |
| 6 | [Insignia Financial](https://www.tamtam.ai/c/insignia-financial) (insigniafinancial.com.au)<br>A leading wealth manager in Australia, founded in 1846 to protect families, now offering a range of tailored financial solutions | Financial Services | 🇦🇺 Melbourne | 4,262 |  |
| 7 | [Treasury Wine Estates](https://www.tamtam.ai/c/treasury-wine-estates) (tweglobal.com)<br>Crafting and sharing exceptional wines globally, managing iconic brands, vineyards, and fostering memorable wine experiences worldwide. | Beverage Manufacturing | 🇦🇺 Melbourne | 2,578 |  |
| 8 | [Vocus Group Limited](https://www.tamtam.ai/c/vocus-group-limited) (vocusgroup.com.au)<br>Provider of telecommunications infrastructure in Australia and New Zealand with a focus on simplicity, reliability, and automation to meet customer connectivity needs | Telecommunications | 🇦🇺 Melbourne | 1,714 |  |
| 9 | [Hansen Technologies](https://www.tamtam.ai/c/hansen-technologies) (hansencx.com)<br>provides mission-critical software and expertise to energy, water, and telecommunications industries enabling innovation, new services, and regulatory compliance worldwide. | Software Development | 🇦🇺 Melbourne | 1,662 | 1971 |
| 10 | [Murdoch Children's Research Institute (MCRI)](https://www.tamtam.ai/c/murdoch-children-s-research-institute-mcri) (mcri.edu.au)<br>Leading child health research institute in Australia, dedicated to preventing and treating childhood conditions through research, clinical care, and genetic testing | Research Services | 🇦🇺 Melbourne | 1,490 | 1989 |
| 11 | [Integral Diagnostics (IDX)](https://www.tamtam.ai/c/integral-diagnostics-idx) (integraldiagnostics.com.au)<br>Leading provider of medical imaging services in Australia and New Zealand, delivering state-of-the-art diagnostic services through multiple clinics and hospital sites | Hospitals and Health Care | 🇦🇺 Melbourne | 1,398 |  |
| 12 | [McMillan Shakespeare (MMSG)](https://www.tamtam.ai/c/mcmillan-shakespeare-mmsg) (mmsg.com.au)<br>A diverse company providing employee benefits, fleet management, and disability support, with a focus on making complex matters simple and putting people first | Financial Services | 🇦🇺 Melbourne | 1,248 | 1988 |
| 13 | [Kinetic](https://www.tamtam.ai/c/kinetic-melbourne) (wearekinetic.com)<br>A global transport network operator providing bus and rail services in multiple countries, committed to sustainability, diversity, and community impact | Ground Passenger Transportation | 🇦🇺 Melbourne | 1,168 |  |
| 14 | [Intrepid Group](https://www.tamtam.ai/c/intrepid-group) (intrepidgroup.travel)<br>Global leader in sustainable adventure travel, offering unique experiences in over 120 countries while promoting social and environmental responsibility | Travel Arrangements | 🇦🇺 Melbourne | 1,121 |  |
| 15 | [Pact Group Holdings Ltd](https://www.tamtam.ai/c/pact-group-holdings-ltd) (pactgroup.com)<br>Leading circular economy with innovative packaging, reuse, and recycling solutions focused on sustainability and creating lasting environmental value. | Packaging and Containers Manufacturing | 🇦🇺 Melbourne | 979 | 2002 |
| 16 | [DBG Health](https://www.tamtam.ai/c/dbg-health) (dbghealth.com.au)<br>Leading diversified group providing pharmaceuticals, consumer health brands, independent pharmacy services, and personalized wellness solutions through various specialized divisions across Australia. | Retail Health and Personal Care Products | 🇦🇺 Melbourne | 859 |  |
| 17 | [Nucleus Network](https://www.tamtam.ai/c/nucleus-network) (nucleusnetwork.com)<br>global provider specializing in early phase clinical trials, offering access to major regulatory markets with extensive experience and scientific leadership | Research Services | 🇦🇺 Melbourne | 820 | 2004 |
| 18 | [GPC Asia Pacific](https://www.tamtam.ai/c/gpc-asia-pacific) (gpcasiapac.com)<br>A leading supplier of industrial, automotive aftermarket parts, and services in the Asia Pacific region, driving world movements with a diverse product range and global presence | Motor Vehicle Manufacturing | 🇦🇺 Melbourne | 804 |  |
| 19 | [PMY Group](https://www.tamtam.ai/c/pmy-group) (pmygroup.com)<br>Providing comprehensive technology infrastructure, experiential systems, and intelligence solutions to optimize operations and enhance live venues and major events worldwide. | Technology, Information and Internet | 🇦🇺 Melbourne | 760 |  |
| 20 | [Netwealth - See Wealth Differently (ASX:NWL)](https://www.tamtam.ai/c/netwealth-see-wealth-differently-asx-nwl) (netwealth.com.au)<br>Provides innovative portfolio administration, superannuation, and managed account solutions for investors and financial advisers through an award-winning investment platform and custodial services. | Financial Services | 🇦🇺 Melbourne | 725 | 1999 |
| 21 | [Liberty](https://www.tamtam.ai/c/liberty-melbourne) (liberty.com.au)<br>provides innovative and flexible lending solutions supporting over 900,000 customers with financial needs, committed to inclusion and community support | Financial Services | 🇦🇺 Melbourne | 725 | 1997 |
| 22 | [Catapult](https://www.tamtam.ai/c/catapult) (catapult.com)<br>A global sports technology company leveraging sports science and analytics to enhance athlete performance, prevent injuries, and track return to play | Software Development | 🇦🇺 Melbourne | 703 | 2006 |
| 23 | [Zenitas Healthcare](https://www.tamtam.ai/c/zenitas-healthcare) (zenitas.com.au)<br>This company offers integrated health, aged care, and disability services to empower individuals to live healthier, happier, and more independent lives in their own homes and communities | Hospitals and Health Care | 🇦🇺 Melbourne | 681 |  |
| 24 | [Munro Footwear Group](https://www.tamtam.ai/c/munro-footwear-group) (munrofootweargroup.com.au)<br>A footwear group with a diverse portfolio of trusted brands, focusing on empowering people to embrace life's moments through quality shoes | Retail Apparel and Fashion | 🇦🇺 Melbourne | 533 | 1962 |
| 25 | [La Trobe Financial](https://www.tamtam.ai/c/la-trobe-financial) (latrobefinancial.com.au)<br>Specialises in alternative asset management, providing finance and credit investment solutions to institutional and retail investors in Australia. | Financial Services | 🇦🇺 Melbourne | 530 | 1952 |
| 26 | [Converge](https://www.tamtam.ai/c/converge) (convergeinternational.com.au)<br>A leading Australian provider of Employee Assistance Programs, consulting, and training services, specializing in workplace behavior, wellbeing, and productivity initiatives | Mental Health Care | 🇦🇺 Melbourne | 460 | 1960 |
| 27 | [SPC Global](https://www.tamtam.ai/c/spc-global) (spcglobalgroup.com)<br>Company offers packaged fruit, vegetables, beverages, ready meals, dairy, and wellness products with operations in Australia and Asia. | Food and Beverage Services | 🇦🇺 Melbourne | 442 | 1918 |
| 28 | [MedHealth](https://www.tamtam.ai/c/medhealth) (medhealth.com.au)<br>MedHealth is a group of health, medical, and employment brands that collaborate to improve health and employment outcomes for individuals and populations | Hospitals and Health Care | 🇦🇺 Melbourne | 406 | 1986 |
| 29 | [CETEC](https://www.tamtam.ai/c/cetec) (cetec.com.au)<br>An independent consultancy specializing in environmental, sustainability, and occupational health services for buildings and the built environment, utilizing a scientific approach for comprehensive solutions | Environmental Services | 🇦🇺 Melbourne | 394 | 1987 |
| 30 | [Clemenger Careers Australia & New Zealand](https://www.tamtam.ai/c/clemenger-careers-australia-and-new-zealand) (cle.ms)<br>Leading marketing communications group in Australia & New Zealand, with 26+ businesses offering creative, advertising, PR, design, and market research services Over 1,600 employees across multiple locations | Advertising Services | 🇦🇺 Melbourne | 393 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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## The same list elsewhere in Australia

- [Corporate groups and holding companies in Australia](https://www.tamtam.ai/l/holding-companies-australia) (280)
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- [Corporate groups and holding companies in Queensland](https://www.tamtam.ai/l/holding-companies-queensland) (37)
- [Corporate groups and holding companies in Western Australia](https://www.tamtam.ai/l/holding-companies-western-australia) (29)
- [Corporate groups and holding companies in Sydney](https://www.tamtam.ai/l/holding-companies-sydney) (57)

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Source: https://www.tamtam.ai/l/holding-companies-melbourne