Ari Helgason
Principal @ Index Ventures
London, United Kingdom
Ari Helgason is a seed investor at Index Ventures in London focused on Software and SaaS. Ari Helgason - co-founder @ Transition
- Total investments:
- 13
- Last investment:
- Lead investor:
- 54%
Last updated:
For AI agents: llms.txt
Industries Ari Helgason invests in
Stages Ari Helgason invests in
Countries Ari Helgason invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2.5M–$8.3M
- Series A
- $10M–$17M
Investment Focus
Industry
- Software 4 (31%)
- SaaS 3 (23%)
- Analytics 2 (15%)
- Developer Tools 2 (15%)
- Energy 1 (8%)
Country
- United Kingdom 4 (31%)
- France 2 (15%)
- Denmark 1 (8%)
- Iceland 1 (8%)
- Switzerland 1 (8%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Co-located nuclear power plants to unlock the next 1,000 years of advanced industry. | $8.3M / Seed / Mar 25, 2026 | ||
| Hybird emerged from frustration with traditional electricity monitoring, which lacked detailed insights. Now, Hybird tracks electricity usage at the source level, making it easier to save energy, cut costs, and reduce your CO2 footprint—all at a comparable cost to traditional panels.Hybird offers source-level transparency in electricalconsumption, driving energy management to new levels of efficiency through enhanced control and knowledge. | $2.5M / Seed / Jan 28, 2025 | ||
| Volter software offers a comprehensive solution for commercial and industrial property owners to deploy, manage, and improve solar assets. | $3.2M / Pre-Seed / Nov 28, 2024 | ||
| Meet your finance team's new superpower: LiveFlow eliminates the endless hours of manual financial reporting that keep CFOs and their teams stuck instead of driving strategic value. By automating your month-end close process from days to minutes, LiveFlow acts like your highest-performing analyst who works 24/7 with perfect accuracy. Notonly does this free your team from the monthly close chaos, but it also means you can finally focus on what you actually became a CFO for – delivering insights that move your business forward. | $3.5M / Seed / Dec 21, 2021 | ||
| Nexthink is a global leader in digital experience management. The company's product allows enterprises to create highly productive digital workplaces for their employees by delivering optimal end-user experience. Through a unique combination of real-time analytics, automation and employee feedback across all endpoints, Nexthink helps ITteams meet the needs of the modern digital workplace. | $180.2M / Series D / Feb 08, 2021 | ||
| Strapi is an open-source software helping developers to easily build, deploy, and manage APIs. Its open-source headless CMS provides backend functionality for applications and gives developers the freedom to use the tools of their choice for front-end frameworks. It’s called headless because the frontend is not part of the CMS, but there’s an APIfor content to show up on different devices.The company was founded in 2016 and headquartered in Paris, Ile-de-France. | $10M / Series A / May 20, 2020 | ||
| Ready is the most simple and secure smart wallet for crypto. It does everything you'd expect from a bank (and more). Without the bank. Earn interest and invest; borrow, store and send. Access DeFi and Dapps in a few taps. Ready was founded in 2017 and is headquartered in London. | $12M / Series A / Mar 09, 2020 | ||
| Cutover is a work orchestration and observability platform that provides full organizational visibility into dynamic flows of work.The Cutover platform allows teams to prepare for big events that could stress their infrastructure by staging rehearsals. Through the platform’s portal, top executives and managers can view visualizations ofperformance data and analyze any issues as they emerge. The platform also integrates with other SaaS platforms to include data from third-party tools and create clearer lines of communication.Craig Gregory, Ky Nichol, Marcus Wildsmith established the Shoreditch, Hackney-based company in 2013. | $17M / Series A / Nov 12, 2019 | ||
| Nexthink is a global leader in digital experience management. The company's product allows enterprises to create highly productive digital workplaces for their employees by delivering optimal end-user experience. Through a unique combination of real-time analytics, automation and employee feedback across all endpoints, Nexthink helps ITteams meet the needs of the modern digital workplace. | $86.4M / Series C / Dec 12, 2018 | ||
| GRID empowers every-day Excel users to turn their spreadsheets into modern web applications without learning any new skills. It enables the users to instantly turn any spreadsheet into a beautiful, interactive web document that can be securely shared and analyzed online. | $1M / Angel / Oct 31, 2018 | ||
| See all 13 investments → | |||
Co-Investors
About Index Ventures
Index Ventures is a venture capital firm which helps entrepreneurs turn bold ideas into global businesses.
Index Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Georgia Stevenson
Partner
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Gerald Rimer
Team Member
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Hannah Seal
Principal/Partner
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Jan Hammer
Investor & Partner
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Julia Andre
Principal/Partner
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FAQ
What does Ari Helgason invest in?
Ari Helgason invests primarily in Software, SaaS and Analytics startups, most often at Seed and Series A stage. Most of the 13 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Ari Helgason's check size?
Ari Helgason typically joins rounds of $2.5M–$8.3M at Seed and $10M–$17M 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 Ari Helgason participates in.
How do I contact Ari Helgason?
Public channels for Ari Helgason 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.
When did Ari Helgason last invest?
The most recent investment recorded for Ari Helgason closed in Mar 2026. Shizune tracks 13 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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