# Open Field Capital

> Open Field Capital is a VC fund backing Artificial Intelligence and Software. See 23 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: New York, United States
- Total investments: 23
- Last investment: Aug 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/aaronzeng
- X (Twitter): https://www.twitter.com/marcweiss
- Website: http://www.ofcap.com

Open Field Capital is a VC fund in New York focused on Artificial Intelligence and Software. Open Field Capital LLC was established in August of 2003 with the exclusive focus of managing portfolios in emerging technology equities.The founding principals of Open Field Capital have worked together for over 15 years and have a substantial depth and breadth of experience in the financial markets. Throughout that time, the principals haveworked in emerging technology markets and have developed both an investment philosophy and methodology tailored to the sector's unique characteristics.

## Contacts

5 contacts available for Open Field Capital. Shizune tracks 1 team members at Open Field Capital. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/open-field-capital?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $3.1M–$30M |
| Series A | $8.7M–$52M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Artificial Intelligence | 8 | 35% |
| Software | 6 | 26% |
| Health Care | 4 | 17% |
| Machine Learning | 4 | 17% |
| Biotechnology | 3 | 13% |

50 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 5 | 22% |
| Series A | 5 | 22% |
| Series B | 4 | 17% |
| Funding Round | 4 | 17% |
| Series C | 3 | 13% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 15 | 65% |
| Austria | 1 | 4% |
| United Kingdom | 1 | 4% |
| Trinidad and Tobago | 1 | 4% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Marc Jay Weiss | CIO & Founder | 2 | https://shizune.co/investors/profile/marc-jay-weiss |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Paragraf | Paragraf is the world’s leading graphene-based electronic device design, development and manufacturing company. Building on our proprietary process to grow graphene directly on standard semiconductor industry substrates, Paragraf has pioneered the delivery of two-dimensional technologies at scale. Paragraf’s high-quality graphene – integratablewith standard semiconductor tool process lines – has unlocked the incorporation of this remarkable material into both existing and new electronic devices and applications. Through our world-first dedicated graphene device foundry, Paragraf delivers high-performance, low-power technologies to multiple markets and offers two-dimensional-material foundry services to customers and partners, providing graphene in chips to their device requirements. | $55M | Series C | Aug 25, 2025 |  |
| Numenta | Numenta has developed a cohesive theory, core software technology, and numerous applications all based on principles of the neocortex. This technology lays the groundwork for the new era of machine intelligence. Our innovative work delivers breakthrough capabilities and demonstrates that a computing approach based on biological learning principleswill make possible a new generation of capabilities not possible with today’s programmed computers. | $3.1M | Seed | Jun 26, 2024 |  |
| Mojo Vision | Mojo Vision is a developer of augmented reality products and platforms intended to invent the future of computing. The company has developed a smart contact lens with a built-in display that gives timely information without interrupting the focus and delivers immediate, powerful, and relevant information without the intrusions of today'smobile devices, enabling users to connect with others at a glance, anytime, anywhere handsfree.Mojo Vision was founded in 2015 and headquartered in Saratoga, California. | $43.5M | Series A | Oct 12, 2023 |  |
| Mojo Vision | Mojo Vision is a developer of augmented reality products and platforms intended to invent the future of computing. The company has developed a smart contact lens with a built-in display that gives timely information without interrupting the focus and delivers immediate, powerful, and relevant information without the intrusions of today'smobile devices, enabling users to connect with others at a glance, anytime, anywhere handsfree.Mojo Vision was founded in 2015 and headquartered in Saratoga, California. | $22.4M | Series C | Apr 05, 2023 |  |
| Delfi Diagnostics | Delfi Diagnostics detect cancer early, when it is most curable, using high precision non-invasive blood tests. It uses artificial intelligence and genome sequencing to detect unique patterns of DNA fragmentation in the blood of patients. | $225M | Series B | Jul 18, 2022 |  |
| Neo Cybernetica | Neo Cybernetica develops cybernetics technology to improve the capability of artificially intelligent systems in achieving both autonomously and in collaboration with humans. | $30M | Seed | Feb 09, 2022 |  |
| Mojo Vision | Mojo Vision is a developer of augmented reality products and platforms intended to invent the future of computing. The company has developed a smart contact lens with a built-in display that gives timely information without interrupting the focus and delivers immediate, powerful, and relevant information without the intrusions of today'smobile devices, enabling users to connect with others at a glance, anytime, anywhere handsfree.Mojo Vision was founded in 2015 and headquartered in Saratoga, California. | $45M | Series B | Jan 04, 2022 |  |
| dClimate | dClimate is the world's first transparent, decentralized marketplace where climate data, forecasts, and models are standardized, monetized, and distributed. The marketplace connects data publishers directly with data consumers, making climate data more accessible and reliable. When data providers share data and forecasts with the market it isautomatically scored for reliability, which helps consumers to shop for information. In exchange, dClimate creates a simple, direct-to-consumer distribution mechanism to monetize their work. | $3.5M | Seed | Apr 08, 2021 |  |
| Genesis Molecular AI | Their academia-leading research was the initial component of our expanding portfolio of AI technologies. They are combining novel deep neural networks, biophysical simulation, and massively scalable computing infrastructure to achieve industry-leading performance in a molecular generation and property prediction.The company was founded in 2019and based in South San Francisco, California. | $52M | Series A | Dec 02, 2020 |  |
| Turntide Technologies | Turntide specializes in developing sustainable technologies that drive down energy consumption and operating costs in buildings, agriculture, and electric transport, boosting bottom lines and accelerating a global path to 100% renewable energy. It has developed an efficient electric motor system, based on revolutionary switched reluctancetechnology, managed by advanced cloud software. Its goal is to eliminate the 25% of global electricity consumption that is wasted by legacy electric motors, thus accelerating the world’s transition from fossil fuels and leaving them in the ground where they belong.The company was founded in 2013 and is headquartered in Sunnyvale, California. | $33M | Series B | Sep 24, 2020 |  |

10 of 23 investments shown.

## Co-investors
- [Khosla Ventures](https://shizune.co/investors/profile/khosla-ventures) — VC Fund, 7 deals together
- [New Enterprise Associates](https://shizune.co/investors/profile/new-enterprise-associates) — VC Fund, 5 deals together
- [Dolby Family Ventures](https://shizune.co/investors/profile/dolby-family-ventures) — VC Fund, 4 deals together
- [Liberty Global Ventures](https://shizune.co/investors/profile/liberty-global-ventures) — VC Fund, 4 deals together
- [AME Cloud Ventures](https://shizune.co/investors/profile/ame-cloud-ventures) — VC Fund, 3 deals together
- [Fusion Fund](https://shizune.co/investors/profile/fusion-fund) — VC Fund, 3 deals together

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## FAQ

### What does Open Field Capital invest in?

Open Field Capital invests primarily in Artificial Intelligence, Software and Health Care startups, most often at Seed and Series A stage. Most of the 23 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Open Field Capital's check size?

Open Field Capital typically joins rounds of $3.1M–$30M at Seed and $8.7M–$52M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Open Field Capital participates in.

### How do I contact Open Field Capital?

Public channels for Open Field Capital include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Open Field Capital?

The team at Open Field Capital includes Marc Jay Weiss (CIO & Founder). The Team section lists each member with their title, investment count and links.

### 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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