InDaily’s annual ranking of the state’s top 100 companies by market capitalisation and revenue covers the 2019-20 financial year and includes more volatility than usual, due to the COVID-19 pandemic.

The list, compiled for InDaily by Adelaide financial services firm Taylor Collison, is the state’s most definitive guide to our top companies (scroll to the bottom of the page for eligibility criteria).

The countdown began on Monday and will continue all week – with the top 20 and full list revealed on Friday. Go here to see the companies ranked 100 to 81, and here for those ranked 80 to 61.

In today’s group of companies, Taylor Collison director Scott Dolling singled out Guidera O’Connor – ranked at 58 – for special mention.

“Guidera O’Connor has growng its revenues in 2020 by 20 per cent to hit $79 million,” he said.

“Established in 2001 by a group of water engineering professionals, the now rebranded ‘GO’ delivers water treatment and pumping projects for water authorities. Water treatment and water management will, of course, continue to be of vital importance for SA and Australia.”

60. Micro-X Limited

Sector: Health Care | Revenue: $4.3m | Last Year’s Ranking: 64

Micro-X produces, designs, develops and manufactures a range of ultra-lightweight, mobile x-ray imaging systems for medical and security applications.

59. Terramin Australia Limited

Sector: Mining | Revenue: Not meaningful | Last Year’s Ranking: 48

Terramin is a base and precious metal development company with advanced zinc and gold projects in South Australia and Algeria.

58. Guidera O’Connor

Sector: Building and construction | Revenue: $79m | Last Year’s Ranking: 59

Guidera O’Connor provides design and construction services to the Australian water industry.

57. SAGE Group Holdings

Sector: Professional services | Revenue: $112m | Last Year’s Ranking: 56

SAGE Group Holdings provides electrical engineering and automation services in Australia.

56. Silk Laser Clinics

Sector: Other | Revenue: Undisclosed | Last Year’s Ranking: Not ranked

Silk began with one clinic in South Australia offering a range of cosmetic services, and now has locations across the country.

55. Galipo Food Co Pty Ltd

Sector: Food and Beverage | Revenue: $128m | Last Year’s Ranking: 54

Galipo Foods is a large-scale supplier to the food service industry.

54. Beston Global Food Company Limited

Sector: Agriculture | Revenue: $103m | Last Year’s Ranking: 69

Beston Global Food Company Limited exports a range of food products, focusing on dairy and meat.

53. Woods Bagot

Sector: Professional services | Revenue: $136m | Last Year’s Ranking: 51

Woods Bagot is a global architecture, design and consultancy firm, based in Adelaide.

52. RJE Global

Sector: Building and construction | Revenue: $137m | Last Year’s Ranking: 52

Established in 1996, RJE provides multi-disciplinary engineering and construction services to complex projects across a range of industries.

51. Hickinbotham Group of Companies

Sector: Building and construction | Revenue: Undisclosed | Last Year’s Ranking: 49

Hickinbotham is a major residential developer, building homes in and around Adelaide.

50. Aerometrex Pty Ltd

Sector: Information technology and equipment | Revenue: $20m | Last Year’s Ranking: 67

Aerometrex provides high-resolution spacial data products and services using aerial mapping technology.

49. Zerella Holdings

Sector: Agriculture | Revenue: Undisclosed | Last Year’s Ranking: Not ranked

Based in Virginia, Zerella is a major Australian supplier of potatoes, carrots and onions.

48. Australian Vintage Limited

Sector: Food and Beverage | Revenue: $267m | Last Year’s Ranking: 44

Australian Vintage Limited is a leading Australian wine company with a fully-integrated wine business model including vineyards, boutique and bulk wine production, packaging, marketing and distribution.

47. Alcidion Group Limited

Sector: Health Care | Revenue: $18.6m | Last Year’s Ranking: 36

Alcidion Group Limited is a health informatics company providing clinicians with decision support tools.

46. Thomson Geer

Sector: Professional services | Revenue: $175m | Last Year’s Ranking: 47

Thomson Geer is a large corporate law firm working with ASX clients, major global foreign corporations, government enterprises and private corporations.

45. Alice Car Centre Pty Ltd

Sector: Automotive | Revenue: $299m | Last Year’s Ranking: 43

Alice Car Centre is an entity of the Peter Kittle Motor Company, which runs a series of automotive dealerships.

44. CATCON

Sector: Building and construction | Revenue: Undisclosed | Last Year’s Ranking: 42

CATCON (Civil & Allied Technical Construction Pty Ltd) is a civil engineering and construction company that delivers and manages power, mining, water and general infrastructure projects for national and international clients.

43. Buddy Platform Limited

Sector: Information technology and equipment | Revenue: $31m | Last Year’s Ranking: 81

Buddy Platform Limited produces data aggregation, management and control platforms for the internet of things and connected devices.

42. Lucas Total Contract Solutions

Sector: Civil Construction/Mining | Revenue: Undisclosed | Last Year’s Ranking: 40

Lucas TCS is a privately-owned civil engineering and construction company, founded over 50 years ago which has worked with some of Australia’s leading mining and resource organisations.

41. Duxton Water Limited

Sector: Duxton Water Limited | Revenue: $93.7m | Last Year’s Ranking: 41

Duxton Water Limited is a South Australian investment firm with water entitlements in the Southern Murray Darling Basin.

About the SA Business Index

To be eligible for inclusion in the list, companies must:

• Be a South Australian entity with an Adelaide ownership register, or be a South Australian operated entity;
• Be a company founded and majority-owned (50.01 per cent plus) by South Australians.

Companies owned in part or whole by government, government agencies and organisations, and registered charities are not eligible.

While companies don’t have to nominate to be included in the list, which is based on market capitalisation, local businesses are encouraged to put their names forward.

Now in its sixth year, the Index has become a key source of data for those with a keen interest in the South Australian economy and business environment.

Data partner

In partnership with