# Blum Ventures

> Blum Ventures is a VC fund in Höchst backing Software, Real Estate and Construction. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: VC Fund
- Location: Höchst, Austria
- Total investments: 2
- Last investment: Jul 2026
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/blum-ventures-gmbh/
- Website: https://blum-ventures.com/

Blum Ventures is a VC fund in Höchst focused on Software and Real Estate. We invest in scalable startups and build ventures. At Blum Ventures startup speed meets industrial precision. We invest in ambitious startups that create the future beyond modern living and industry tech. Together we challenge the status quo of smart living, green building solutions, industrial tech, motion tech and beyond.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $4.7M–$6.8M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 1 | 50% |
| Real Estate | 1 | 50% |
| Construction | 1 | 50% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Austria | 1 | 50% |
| The Netherlands | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Promptwatch | PromptWatch is a platform designed for SEO professionals and digital marketers who want to stay ahead in the age of AI-driven search. As Generative AI engines like ChatGPT, Claude, and Perplexity increasingly influence how users discover information, PromptWatch helps businesses ensure their brand is visible and relevant within these AI-generatedanswers. Our tool enables users to monitor mentions of their brand across leading AI engines, uncover where and how their business is referenced, and identify optimization opportunities to improve visibility. By tapping into Generative Engine Optimization (GEO), PromptWatch empowers marketers to adapt their strategies beyond traditional search engines—ensuring their content gets surfaced in the conversations and answers that matter most. PromptWatch is your essential toolkit for thriving in the next wave of search. | $6.8M | Seed | Jul 14, 2026 |  |
| OPTIMUSE | Optimuse provides an AI-based solution that supports the pre-design phase of building renovation. The platform converts building data into a digital twin to create accurate models for planning. It integrates data such as room types, thermal properties, and HVAC systems. The system runs energy simulations to calculate heating, cooling, lighting, andequipment needs. It helps design technical systems by defining the quantity, sizing, and configuration of components. The platform develops renovation plans by modeling financial, energy, and emissions outcomes. It also offers tools for cost calculation, performance monitoring, and collaboration across project teams. | $4.7M | Seed | Oct 01, 2025 |  |

2 of 2 investments shown.

## Co-investors
- [seed + speed Ventures](https://shizune.co/investors/profile/seed-speed-ventures) — VC Fund, 2 deals together
- [Arches Capital](https://shizune.co/investors/profile/arches-capital-1959) — VC Fund, 1 deal together
- [aws Gründungsfonds](https://shizune.co/investors/profile/aws-grnderfonds) — VC Fund, 1 deal together
- [Matterwave Ventures](https://shizune.co/investors/profile/matterwave-ventures) — VC Fund, 1 deal together

## Similar investors

### Similar industry
- [Brick & Mortar Ventures](https://shizune.co/investors/profile/brick-mortar-vc) — VC Fund
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Foundamental](https://shizune.co/investors/profile/foundamental) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
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- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

### Similar country
- [Speedinvest](https://shizune.co/investors/profile/speedinvest) — VC Fund
- [tecnet equity](https://shizune.co/investors/profile/tecnet-equity) — VC Fund
- [aws Gründungsfonds](https://shizune.co/investors/profile/aws-grnderfonds) — VC Fund

## Featured in investor lists
- [Construction Investors in Austria](https://shizune.co/investors/construction-investors-austria)
- [Construction VC Funds in Austria](https://shizune.co/investors/construction-vc-funds-austria)

## FAQ

### What does Blum Ventures invest in?

Blum Ventures invests primarily in Software, Real Estate and Construction startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in Austria. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Blum Ventures's check size?

Blum Ventures typically joins rounds of $4.7M–$6.8M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Blum Ventures participates in.

### When did Blum Ventures last invest?

The most recent investment recorded for Blum Ventures closed in Jul 2026. Shizune tracks 2 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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