![Vivian Stewart](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Vivian Stewart
Chief Operating Officer at
BIGN HLDG
Net worth: 1 M $ as of 31/05/2026
Profile
Vivian Stewart is the founder of Sydney Angels, Inc. (founded in 2008), Magna Data Australia Pty Ltd. (founded in 1993), Tinshed Corp.
Pty Ltd. (founded in 1999), Callafin Pty Ltd. (founded in 2014), and Proto Investment Partners Pty Ltd. (founded in 2010).
Mr. Stewart's current job(s) include Chief Executive Officer at VentureCrowd Pty Ltd., Independent Non-Executive Director at Superloop Ltd., Member at Australian Institute of Co. Directors, and Chief Operating Officer at BigTinCan Holdings Ltd. (since 2018).
Mr. Stewart's former job(s) include Chairman at BigAir Group Pty Ltd. (2008-2016), Non-Executive Director at Walls 360, Inc. (2011), and Chief Operating Officer & Director at Hall Capital Strategies Pty Ltd. (2005-2014).
Mr. Stewart's education history includes an undergraduate degree from The University of Sydney (1993) and an MBA from the Australian Graduate School of Management (2006).
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SUPERLOOP LTD. 0.1% | 21/08/2025 | 526,134 ( 0.1% ) | 1 M $ | 31/05/2026 |
Vivian Stewart active positions
| Companies | Position | Start |
|---|---|---|
| SUPERLOOP LIMITED | Director/Board Member | 21/12/2016 |
| BIGN HLDG | Chief Operating Officer | 05/04/2018 |
Australian Institute of Co. Directors
 Australian Institute of Co. Directors Miscellaneous Commercial ServicesCommercial Services Promotes governance and develops leadership skills | Corporate Officer/Principal | - |
VentureCrowd Pty Ltd.
 VentureCrowd Pty Ltd. Internet Software/ServicesTechnology Services Operates investment crowdfunding platform | Chief Executive Officer | - |
Proto Investment Partners Pty Ltd.
 Proto Investment Partners Pty Ltd. Investment ManagersFinance Proto Investment Partners invests in companies located in Australia. The firm targets companies operating in the fields of internet/web services, biotechnology, clean technology, healthcare, media & entertainment and communications & software development sectors. It provides financing for seed, start-up and early expansion stage capital requirements with an investment size of AUD 0.1 - 0.5 million. The firm considers co-investments with other investors and makes follow on investments. It also takes a seat on the board of directors. | Founder | 01/01/2010 |
Former positions of Vivian Stewart
| Companies | Position | End |
|---|---|---|
Callafin Pty Ltd.
 Callafin Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Provides corporate advisory services | Founder | 01/12/2020 |
Sydney Angels, Inc.
 Sydney Angels, Inc. Financial ConglomeratesFinance Provides investment services | Founder | 01/12/2018 |
| BIGAIR GROUP LIMITED | Chairman | 01/12/2016 |
Hall Capital Strategies Pty Ltd.
 Hall Capital Strategies Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Provides legal services | Chief Operating Officer | 01/01/2014 |
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Training of Vivian Stewart
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
61
1st degree connections
14
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 14 |
|---|---|
BigAir Group Pty Ltd.
 BigAir Group Pty Ltd. Specialty TelecommunicationsCommunications Owns and operates wireless broadband network | Communications |
Walls 360, Inc.
 Walls 360, Inc. Commercial Printing/FormsCommercial Services Creates wall graphics for artists, designers, photographers and brands | Commercial Services |
The University of Sydney
 The University of Sydney Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Australian Institute of Co. Directors
Australian Institute of Co. Directors Miscellaneous Commercial ServicesCommercial Services Promotes governance and develops leadership skills | Commercial Services |
Hall Capital Strategies Pty Ltd.
Hall Capital Strategies Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
Sydney Angels, Inc.
Sydney Angels, Inc. Financial ConglomeratesFinance Provides investment services | Finance |
Australian Graduate School of Management
 Australian Graduate School of Management Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Callafin Pty Ltd.
Callafin Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Provides corporate advisory services | Commercial Services |
BigTinCan Holdings Ltd.
 BigTinCan Holdings Ltd. Packaged SoftwareTechnology Services Develops sales enablement automation platform | Technology Services |
Superloop Ltd.
 Superloop Ltd. Engineering & ConstructionIndustrial Services Engages in construction and operation of telecommunications infrastructure | Industrial Services |
VentureCrowd Pty Ltd.
VentureCrowd Pty Ltd. Internet Software/ServicesTechnology Services Operates investment crowdfunding platform | Technology Services |
Proto Investment Partners Pty Ltd.
Proto Investment Partners Pty Ltd. Investment ManagersFinance Proto Investment Partners invests in companies located in Australia. The firm targets companies operating in the fields of internet/web services, biotechnology, clean technology, healthcare, media & entertainment and communications & software development sectors. It provides financing for seed, start-up and early expansion stage capital requirements with an investment size of AUD 0.1 - 0.5 million. The firm considers co-investments with other investors and makes follow on investments. It also takes a seat on the board of directors. | Finance |
Magna Data Australia Pty Ltd.
 Magna Data Australia Pty Ltd. Specialty TelecommunicationsCommunications Provides Internet services | Communications |
Tinshed Corp. Pty Ltd.
 Tinshed Corp. Pty Ltd. Advertising/Marketing ServicesCommercial Services Provides advertising and business management services | Commercial Services |
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- Vivian Stewart
