# AEI Horizon X

> AEI Horizon X is a VC fund backing Software, Aerospace and Space Travel. See 8 investments, check sizes, portfolio. Updated Aug 2026.

- Type: VC Fund
- Total investments: 8
- Last investment: Jan 2024
- Lead investor: 75%
- Last updated: Aug 2026

AEI Horizon X is a corporate venture between private equity firm AE Industrial Partners and Boeing.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 3 | 38% |
| Aerospace | 2 | 25% |
| Space Travel | 2 | 25% |
| Information Technology | 2 | 25% |
| SaaS | 1 | 13% |

17 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 2 | 25% |
| Series B | 1 | 13% |
| Series C | 1 | 13% |
| Series D | 1 | 13% |
| Funding Round | 1 | 13% |

7 stages tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Second Front Systems | Second Front Systems (2F) securely fast-tracks government access to software-as-a-service (SaaS) applications to help build a safer tomorrow. The 2F Suite is the only fully integrated platform that empowers you to build, secure, extend, and observe your software, and get it accredited for deployment in regulated environments with ease. With rootsin U.S. Government service, this public-benefit, venture-backed software company is trusted by Government agencies and leading software providers, to empower them to succeed in their contributions to global security. For more information, visit https://secondfront.com/. |  | Venture - Series Unknown | Jan 16, 2024 |  |
| Second Front Systems | Second Front Systems (2F) securely fast-tracks government access to software-as-a-service (SaaS) applications to help build a safer tomorrow. The 2F Suite is the only fully integrated platform that empowers you to build, secure, extend, and observe your software, and get it accredited for deployment in regulated environments with ease. With rootsin U.S. Government service, this public-benefit, venture-backed software company is trusted by Government agencies and leading software providers, to empower them to succeed in their contributions to global security. For more information, visit https://secondfront.com/. | $40M | Series B | Nov 28, 2023 |  |
| JuliaHub | Julia is an open-source, modern, easy, and high-performance programming language. Julia is one of the top 10 languages developed on GitHub, receiving contributions from hundreds of developers. The Julia ecosystem counts over 4,000 packages. Julia itself has been downloaded over 20 million times. The Julia creators received the James H. WilkinsonPrize for Numerical Software and are all co-founders of Julia Computing. Julia Computing, apart from being a major contributor to Julia, develops the JuliaHub cloud platform for enterprise users and also provides support and consulting services to its customers. | $13M |  | Jun 27, 2023 |  |
| Frontier Aerospace | Frontier Aerospace Corporation was incorporated in 2014 and was formerly Frontier Engineering, founded in 1997 by Jim McKinnon. Jim's extensive background in rocket propulsion and his desire to have the freedom to innovate and explore new technologies led him to start Frontier.Frontier focuses on conceptualizing, designing and proving-outinnovative in-space and launch system rocket propulsion. They seek out government research grants and contracts as well as invest internal resources to develop innovative technology primarily in the areas of booster rocket engine components, reaction control thrusters, attitude control propulsion systems and deep space exploration thrusters. | $10M | Series A | Mar 15, 2023 |  |
| Second Front Systems | Second Front Systems (2F) securely fast-tracks government access to software-as-a-service (SaaS) applications to help build a safer tomorrow. The 2F Suite is the only fully integrated platform that empowers you to build, secure, extend, and observe your software, and get it accredited for deployment in regulated environments with ease. With rootsin U.S. Government service, this public-benefit, venture-backed software company is trusted by Government agencies and leading software providers, to empower them to succeed in their contributions to global security. For more information, visit https://secondfront.com/. | $32M | Series A | Dec 07, 2022 |  |
| Tidelift | Tidelift makes open source work better—for everyone. Through the Tidelift Subscription and in direct partnership with maintainers, Tidelift is a single source for proactively managed open source components and professional assurances around those components. Tidelift makes it possible for open source projects to thrive, so we can all create evenmore incredible software, even faster. | $6.5M | Series C | Sep 13, 2022 |  |
| Avathon | SparkCognition is an artificial intelligence technology startup that builds AI technology solutions for industrial applications. A highly awarded company recognized for cutting-edge technology, SparkCognition develops AI-Powered cyber-physical software for the safety, security, and reliability of IT, OT, and the IoT. The company's technologyis capable of harnessing real-time sensor data and learning from it continuously, allowing for more accurate risk mitigation and prevention policies to intervene and avert disasters.SparkCognition’s cognitive software, DeepArmor, is utilized to prevent and detect malware with a high level of accuracy and efficacy by using advanced machine learning and artificial intelligence. They help customers analyze complex data, empower decision making, and transform human and industrial productivity with award-winning machine learning technology and expert teams focused on defense, IIoT, and finance. | $123M | Series D | Jan 25, 2022 |  |
| Virgin Orbit | Virgin Orbit focuses on providing launch services for small satellites. Virgin Orbit operates LauncherOne, a flexible launch service for commercial and government-built satellites. It focuses on dedicated launches of small satellites (smallsats).Virgin Orbit develops vehicles to fly private astronauts, research experiments, and satellites intospace—democratizing access to space for the benefit of life on Earth. | $160M | Post-IPO Equity | Dec 30, 2021 |  |

8 of 8 investments shown.

## Co-investors
- [Moore Strategic Ventures](https://shizune.co/investors/profile/moore-strategic-ventures) — VC Fund, 3 deals together
- [New Enterprise Associates](https://shizune.co/investors/profile/new-enterprise-associates) — VC Fund, 2 deals together
- [8VC](https://shizune.co/investors/profile/8vc) — VC Fund, 1 deal together
- [Abstract](https://shizune.co/investors/profile/a-list-ventures) — VC Fund, 1 deal together
- [Artis Ventures](https://shizune.co/investors/profile/artis) — VC Fund, 1 deal together
- [Booz Allen Ventures](https://shizune.co/investors/profile/booz-allen-ventures) — VC Fund, 1 deal 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 AEI Horizon X invest in?

AEI Horizon X invests primarily in Software, Aerospace and Space Travel startups, most often at Series A and Series B stage. Most of the 8 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did AEI Horizon X last invest?

The most recent investment recorded for AEI Horizon X closed in Jan 2024. Shizune tracks 8 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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