# David Leslie

> David Leslie is a Series A investor at Ellerston Capital backing Information Technology. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Ellerston Capital](https://shizune.co/investors/profile/ellerston-capital)
- Location: Sydney, Australia
- Total investments: 5
- Last investment: Nov 2025
- Lead investor: 80%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/david-leslie-60743619/
- Website: https://ellerstoncapital.com/team/david-leslie/

David Leslie is an Investment Director at Ellerston JAADE

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Information Technology | 2 | 40% |
| Artificial Intelligence | 2 | 40% |
| Big Data | 1 | 20% |
| Web Apps | 1 | 20% |
| Analytics | 1 | 20% |

17 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 2 | 40% |
| Series B | 1 | 20% |
| Private Equity | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Firmus Technologies | Firmus Technologies creates the most efficient AI infrastructure: AI Factories designed to operate at the max-q of AI token generation and profitability. With advanced liquid-everywhere data center technology at its core, Firmus innovates across all layers of the AI Factory, from energy grid management and thermal innovations to GPU and networkingtelemetry and control. This holistic approach creates AI Factories that operate at peak efficiency, delivering high uptime, throughput, and profitability with future-proofed designs.At the heart of this infrastructure is AI FactoryOS, Firmus’ pioneering operating system that integrates data intelligence and control across the physical AI Factory.SMC, Firmus' AI-native cloud platform, leverages SHARP-enabled networking and NCP reference architecture, benefiting from the efficiency of our AI Factory infrastructure. SMC empowers customers to train faster, deploy smarter, and scale globally, while maximizing the value of every token generated. | $326.6M | Private Equity | Nov 14, 2025 |  |
| Firmus Technologies | Firmus Technologies creates the most efficient AI infrastructure: AI Factories designed to operate at the max-q of AI token generation and profitability. With advanced liquid-everywhere data center technology at its core, Firmus innovates across all layers of the AI Factory, from energy grid management and thermal innovations to GPU and networkingtelemetry and control. This holistic approach creates AI Factories that operate at peak efficiency, delivering high uptime, throughput, and profitability with future-proofed designs.At the heart of this infrastructure is AI FactoryOS, Firmus’ pioneering operating system that integrates data intelligence and control across the physical AI Factory.SMC, Firmus' AI-native cloud platform, leverages SHARP-enabled networking and NCP reference architecture, benefiting from the efficiency of our AI Factory infrastructure. SMC empowers customers to train faster, deploy smarter, and scale globally, while maximizing the value of every token generated. | $220.7M | Private Equity | Sep 16, 2025 |  |
| Data Zoo | Carmichael Homes is a real estate company that provides a wide range of newly designed and built living spaces. | $23.2M | Series A | May 14, 2024 |  |
| Prospection | Prospection is a Pioneer in healthcare data analytics. Using predictive analytics and machine learning with real world healthcare data to unearth insights that help research, develop and target better healthcare outcomes for patients. Founded out of Sydney’s Cicada Innovations in 2012, Prospection works with government, pharmaceutical companies andthe medical community across more than 90 therapy programs, including immuno-oncology, Diabetes, Respiratory, HIV and hepatitis, in Australia, Japan, Asia Pacific, UK and USA. | $33.1M | Series B | Sep 13, 2021 |  |
| Ansarada | Ansarada is a global provider of next generation virtual data rooms that enable faster, easier and safer business transactions. Their services are used by the world's leading companies, investment banks, legal and advisory firms in business transactions such as M&A, joint ventures, fundraising and other due diligence based projects.Operating since 2005, their virtual data rooms are independently certified to the highest security standards and supported by experienced professionals 24/7. | $16.2M | Series A | Mar 22, 2018 |  |

5 of 5 investments shown.

## Co-investors
- [NVIDIA](https://shizune.co/investors/profile/nvidia) — VC Fund, 2 deals together
- [Archibald Capital](https://shizune.co/investors/profile/archibald-capital) — VC Fund, 1 deal together
- [Cicada Innovations](https://shizune.co/investors/profile/atp-innovations) — VC Fund, 1 deal together
- [Australian Ethical Investment](https://shizune.co/investors/profile/australian-ethical-2) — VC Fund, 1 deal together
- [Belay Capital](https://shizune.co/investors/profile/belay-capital-6cfc) — VC Fund, 1 deal together
- [Horizons Ventures](https://shizune.co/investors/profile/horizons-ventures) — VC Fund, 1 deal together

## About Ellerston Capital

VC Fund · Sydney, Australia

Ellerston Capital specialises in equity strategies. Today, they have over $5.1 billion in funds under management (as at 28 February 2017) – including separately managed accounts (SMAs), wholesale funds and retail offerings for a range of financial advisers, institutions and individual investors.As a dedicated investment manager, they aim to doone thing exceptionally well: grow and protect their clients’ wealth through investing. They are passionate about creating value for their clients by identifying outstanding stocks and designing portfolios that perform over the long term.

5 contacts available at Ellerston Capital.

| Name | Title | Profile |
| --- | --- | --- |
| Ashok Jacob | Founder , Chairman & Chief Investment Officer | https://shizune.co/investors/profile/ashok-jacob |
| Brian O'Sullivan | Founder | https://shizune.co/investors/profile/brian-o-sullivan-a98d |
| Chris Kourtis | Founder | https://shizune.co/investors/profile/chris-kourtis |
| David Leslie | Investment Director | https://shizune.co/investors/profile/david-leslie-cf50 |
| Justin Diddams | Senior Investment Analyst | https://shizune.co/investors/profile/justin-diddams |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does David Leslie invest in?

David Leslie invests primarily in Information Technology, Artificial Intelligence and Big Data startups, most often at Series A and Series B stage. Most of the 5 investments tracked by Shizune back companies in Australia. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did David Leslie last invest?

The most recent investment recorded for David Leslie closed in Nov 2025. Shizune tracks 5 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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