# Positive Sum

> Positive Sum is a VC fund in Stamford backing Software and FinTech. See 32 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Stamford, United States
- Total investments: 32
- Last investment: Jul 2026
- Lead investor: 34%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/positivesum/
- X (Twitter): https://twitter.com/psumvc
- Website: https://www.positivesumvc.com/

Positive Sum is a venture capital and private equity firm that helps teams build extraordinary businesses.

## Contacts

5 contacts available for Positive Sum. Shizune tracks 1 team members at Positive Sum. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/positive-sum?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 9 | 28% |
| FinTech | 3 | 9% |
| Big Data | 2 | 6% |
| Computer | 2 | 6% |
| Internet | 2 | 6% |

41 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 7 | 22% |
| Seed | 4 | 13% |
| Series B | 3 | 9% |
| Funding Round | 2 | 6% |
| Series D | 1 | 3% |

7 stages tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Patrick O'Shaughnessy | Co-Founder & Partner | 17 | https://shizune.co/investors/profile/patrick-oshaughnessy |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Neko Health | Neko Health is a Swedish health-tech business. Its ambition is to build a healthcare system that can help people stay healthy by focusing on prevention and early detection. Neko has created a new medical scanning technology concept that allows for comprehensive and non-invasive health data collection that is both convenient and economical for thegeneral people. | $700M | Series C | Jul 15, 2026 |  |
| Speakeasy | The all-in-one operations and intelligence infrastructure powering IRL enterprises. |  | Seed | Jul 15, 2026 |  |
| Cognition | Cognition is an applied artificial intelligence lab that focuses on reasoning and code. | $1B | Series D | May 27, 2026 |  |
| Rogo | Rogodevelops an artificial intelligence platform designed specifically for financial institutions such as investment banks, private equity firms, and asset managers. The platform integrates with internal systems and external financial data sources to analyze large volumes of information, including filings, market data, and proprietary datasets, anddeliver structured outputs like financial models, reports, and presentations. It uses AI models and agent-based systems to automate workflows such as research, due diligence, and market analysis, enabling users to complete multi-step financial tasks within a single system. The company’s technology is built with input from professionals with backgrounds in finance and is tailored to reflect the workflows and requirements of high-finance environments. Its tools are used by financial professionals to reduce manual work, support decision-making, and streamline processes across transactions and portfolio management. | $160M | Series D | Apr 29, 2026 |  |
| Skyryse | Skyryse is an aerospace technology company that develops pilot assistance and autonomous flight systems designed to support safer, more accessible helicopter operations. The company’s technology integrates flight control software, sensors, and interface systems that help pilots execute complex maneuvers with enhanced precision and situationalawareness, particularly in challenging environments such as urban, offshore, or emergency response missions. Skyryse provides solutions that automate key phases of flight, including takeoff, navigation, and landing, by translating high-level inputs into coordinated control actions that align with aircraft performance and safety parameters. The company also works with OEMs, operators, and regulatory partners to certify and deploy its systems within existing rotorcraft platforms, enabling integration with avionics, mission planning, and training workflows. Its platform supports real-time data processing, redundancy management, and human-machine interaction design to assist crews while maintaining compliance with aviation safety standards. Skyryse engages with technical teams and stakeholders across civil, commercial, and public safety aviation sectors to advance adoption of automated flight capabilities that enhance operational consistency and pilot effectiveness. | $300M | Series C | Feb 03, 2026 |  |
| Rogo | Rogodevelops an artificial intelligence platform designed specifically for financial institutions such as investment banks, private equity firms, and asset managers. The platform integrates with internal systems and external financial data sources to analyze large volumes of information, including filings, market data, and proprietary datasets, anddeliver structured outputs like financial models, reports, and presentations. It uses AI models and agent-based systems to automate workflows such as research, due diligence, and market analysis, enabling users to complete multi-step financial tasks within a single system. The company’s technology is built with input from professionals with backgrounds in finance and is tailored to reflect the workflows and requirements of high-finance environments. Its tools are used by financial professionals to reduce manual work, support decision-making, and streamline processes across transactions and portfolio management. | $75M | Series C | Jan 28, 2026 |  |
| Etched | Etched.ai designing specialized chips for language model inference. | $500M | Venture - Series Unknown | Jan 13, 2026 |  |
| Base Power | Base Power provides home battery systems, retail electricity services, and energy management solutions for residential customers. The company installs battery storage systems that provide backup power during outages and help manage electricity usage. Its platform combines distributed battery storage with electricity services to support home energymanagement and grid operations. | $1B | Series C | Oct 08, 2025 |  |
| ID.me | ID.me is a digital identity network that aims to simplify the user's indication verification experience. The company's platform streamlines authentication, identity proofing, and federation of external identity and attributes providers through a single API, enabling military, students, first responders, teachers, and government employeesto easily prove their identity online via a single login and avail discounts on various networks. | $65M | Series E | Sep 03, 2025 |  |
| Rogo | Rogodevelops an artificial intelligence platform designed specifically for financial institutions such as investment banks, private equity firms, and asset managers. The platform integrates with internal systems and external financial data sources to analyze large volumes of information, including filings, market data, and proprietary datasets, anddeliver structured outputs like financial models, reports, and presentations. It uses AI models and agent-based systems to automate workflows such as research, due diligence, and market analysis, enabling users to complete multi-step financial tasks within a single system. The company’s technology is built with input from professionals with backgrounds in finance and is tailored to reflect the workflows and requirements of high-finance environments. Its tools are used by financial professionals to reduce manual work, support decision-making, and streamline processes across transactions and portfolio management. | $50M | Series B | Apr 30, 2025 |  |

10 of 32 investments shown.

## Co-investors
- [Sequoia Capital](https://shizune.co/investors/profile/sequoia-capital) — VC Fund, 7 deals together
- [Thrive Capital](https://shizune.co/investors/profile/thrive-capital) — VC Fund, 5 deals together
- [Company Ventures](https://shizune.co/investors/profile/company-ventures) — VC Fund, 4 deals together
- [Company Ventures](https://shizune.co/investors/profile/company-ventures-ec86) — VC Fund, 4 deals together
- [Great Oaks Venture Capital](https://shizune.co/investors/profile/great-oaks-venture-capital) — VC Fund, 4 deals together
- [Ribbit Capital](https://shizune.co/investors/profile/ribbit-capital) — VC Fund, 4 deals together

## 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 Positive Sum invest in?

Positive Sum invests primarily in Software, FinTech and Big Data startups, most often at Series A and Seed stage. Most of the 32 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Positive Sum?

Public channels for Positive Sum 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 Positive Sum?

The team at Positive Sum includes Patrick O'Shaughnessy (Co-Founder & Partner). 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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