# 640 Oxford

> 640 Oxford is a VC fund in New York backing Software and Marketplace. See 17 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: New York, United States
- Total investments: 17
- Last investment: Aug 2026
- Lead investor: 6%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/640oxford/
- Website: https://www.640oxfordventures.com/

640 Oxford is an early stage venture fund primarily investing in preseed/seed stage companies. They back founders building for the intersection of tomorrow, where antiquated industries meet emerging technologies.

## Contacts

5 contacts available for 640 Oxford. Shizune tracks 1 team members at 640 Oxford. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/640-oxford-ventures?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.9M–$5.8M |
| Pre-Seed | $2.7M–$3.5M |
| Series A | $9.5M–$50M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 4 | 24% |
| Marketplace | 3 | 18% |
| Internet | 2 | 12% |
| Logistics | 2 | 12% |
| E-Commerce | 2 | 12% |

42 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 6 | 35% |
| Pre-Seed | 4 | 24% |
| Series A | 4 | 24% |
| Series B | 1 | 6% |
| Funding Round | 1 | 6% |

6 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 12 | 71% |
| India | 1 | 6% |
| Indonesia | 1 | 6% |
| Singapore | 1 | 6% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Brendan Weitz | Partner & Co-founder | 1 | https://shizune.co/investors/profile/brendan-weitz |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Claryx | Claryx is building the hospital immune system, reading the genomes of confirmed patient infections, linking related cases as outbreaks, and tracing each back to its likely source. When that source is in the building (a sink, a shared piece of equipment, a particular room), Claryx finds it by matching the patient's strain against a digital twinof the hospital's microbiome, sequenced from its air, its water and its surfaces, all on proprietary chemistry cheap enough to run continuously. Founded by brothers Kurt and Dirk Hackenberger, Claryx is based in New York and live across multiple health systems. | $3.5M | Pre-Seed | Aug 04, 2026 |  |
| Bravo Ordnance | Bravo Ordnance is a manufacturer of advanced warhead technology intended for autonomous defense systems. | $3M | Pre-Seed | Jul 08, 2025 |  |
| Integrated Reasoning | Integrated Reasoning builds computer hardware to efficiently solve optimization problems. We're making it faster and cheaper to solve problems like scheduling airline pilots or packing boxes into trucks. | $1.9M | Seed | Jun 17, 2025 |  |
| Crosshatch | Crosshatch allows users to share (and un-share) their data with their favorite apps, turning on hyper-personalization in a tap. Developers interpret linked data with secured language models, enabling personalized outputs while keeping users in control. | $2.7M | Pre-Seed | Sep 24, 2024 |  |
| Omen AI | Omen AI develops an AI-powered asset intelligence platform that monitors equipment health through real-time fluid analysis and predictive diagnostics. The company provides sensor technology and portable testing systems that analyze fluids in machinery to identify wear, contamination, and potential equipment issues before failures occur. Omen AIcombines hardware sensors with AI-driven data analysis to help organizations monitor industrial machines and infrastructure systems. The platform supports applications such as industrial equipment maintenance and data center fluid monitoring by providing continuous insights into machine conditions. |  | Pre-Seed | Sep 01, 2024 |  |
| Not Diamond | Not Diamond focuses on optimizing the use of various AI models based on their strengths and capabilities. | $2.3M | Seed | Jul 30, 2024 |  |
| RetailReady | RetailReady specializes in streamlining retail compliance through directed workflows that eliminate the need for traditional paper SOPs and spreadsheet tracking. By digitizing warehouse processes, which traditionally relied on extensive manuals, into a more accessible mobile app format, RetailReady aims to reduce the financial burden of retailerchargebacks on brands and third-party logistics (3PLs). The company leverages AI to revolutionize retail fulfillment strategies, offering insights into common pitfalls in meeting retailer requirements and providing a 360-degree view of the in-store customer journey. RetailReady's solutions are designed to enhance the efficiency of supply chain, fulfillment, and logistics operations. | $3.3M | Seed | Jun 12, 2024 |  |
| Unicorn Auctions | Unicorn Auctions offers rare spirits auctions to buyers, sellers, and collectors. They provide ios and android apps in addition to their web bidding platform for digital auctions. To ensure examination of every asset listed, they must take physical possession of their items. | $5.8M | Seed | Apr 30, 2024 |  |
| Delivery Collective | Delivery Collective means we can order directly from our favorite restaurants. When ordering your food through delivery apps, you pay more in price markup and fees. You can save yourself and the restaurant lots of money by ordering directly. | $3.8M | Seed | Apr 02, 2024 |  |
| Dropezy | A daily needs platform that uses a network of dark stores to guarantee deliveries in under 20 minutes. | $3.4M | Seed | Feb 20, 2022 |  |

10 of 17 investments shown.

## Co-investors
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 3 deals together
- [1984 Ventures](https://shizune.co/investors/profile/1984-ventures) — VC Fund, 2 deals together
- [Defy.vc](https://shizune.co/investors/profile/defy-partners) — VC Fund, 2 deals together
- [JAM Fund](https://shizune.co/investors/profile/jam-fund) — VC Fund, 2 deals together
- [Javas Venture LLC](https://shizune.co/investors/profile/javas-venture-llc) — VC Fund, 2 deals together
- [Karman Ventures](https://shizune.co/investors/profile/karman-ventures) — VC Fund, 2 deals together

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## FAQ

### What does 640 Oxford invest in?

640 Oxford invests primarily in Software, Marketplace and Internet startups, most often at Seed and Pre-Seed stage. Most of the 17 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 640 Oxford's check size?

640 Oxford typically joins rounds of $1.9M–$5.8M at Seed, $2.7M–$3.5M at Pre-Seed and $9.5M–$50M 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 640 Oxford participates in.

### How do I contact 640 Oxford?

Public channels for 640 Oxford include LinkedIn 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 640 Oxford?

The team at 640 Oxford includes Brendan Weitz (Partner & Co-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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