# Citadel

> Citadel is a VC fund backing Information Technology and Biotechnology. See 19 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Chicago, United States
- Total investments: 19
- Last investment: Jun 2026
- Lead investor: 16%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/citadel-llc/
- X (Twitter): https://www.twitter.com/citadelcareers
- Website: http://www.citadel.com
- Facebook: https://www.facebook.com/citadelcareers

Citadel is a VC fund in Chicago focused on Information Technology and Biotechnology. Our ambition at Citadel is to be the most successful investment firm of all time. Together, we've turned ambition into action. For more than three decades, Citadel has captured undiscovered market opportunities in markets around the world by empowering extraordinary people to pursue their best and boldest ideas. We strive to identify thehighest and best uses of capital to generate superior long-term returns for the world’s preeminent public and private institutions.

## Contacts

5 contacts available for Citadel. Shizune tracks 11 team members at Citadel. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/citadel?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series C | $75M–$2B |
| Private Equity | $11M–$120M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Information Technology | 5 | 26% |
| Biotechnology | 4 | 21% |
| Health Care | 3 | 16% |
| Trading Platform | 2 | 11% |
| Financial Services | 2 | 11% |

38 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series C | 3 | 16% |
| Private Equity | 3 | 16% |
| Seed | 2 | 11% |
| Pre-Seed | 2 | 11% |
| Series A | 2 | 11% |

10 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 10 | 53% |
| India | 2 | 11% |
| Latvia | 1 | 5% |
| Germany | 1 | 5% |
| Colombia | 1 | 5% |

7 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Amanda Rubin | Chief Marketing Officer | 0 | https://shizune.co/investors/profile/amanda-rubin |
| Gerald A. Beeson | Senior Managing Director, Chief Operating Officer | 0 | https://shizune.co/investors/profile/gerald-a-beeson |
| Isaac Chang | Head of Trading, Global Fixed Income | 0 | https://shizune.co/investors/profile/isaac-chang |
| Jeffrey Ryan | Quantitative Analyst | 0 | https://shizune.co/investors/profile/jeffrey-ryan-7932 |
| Joe Nelson | Trader | 0 | https://shizune.co/investors/profile/joe-nelson-2 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Ionic Digital | Ionic Digital is an innovator in the bitcoin mining industry. | $400M | Venture - Series Unknown | Jun 26, 2026 |  |
| Nscale | Nscale is an AI GPU cloud platform that provides scale computing to the generative AI market. It develops AI-ready data centers, deploys GPU infrastructure, and delivers AI cloud services. Its AI private cloud platform supports the entire generative AI lifecycle, enabling developers to run and train AI models. It also provides bare metal andvirtualized GPU nodes, Kubernetes-native services (NKS), AI workload scheduling empowered by SLURM, and advanced serverless and dedicated inferencing options. | $2B | Series C | Mar 09, 2026 |  |
| Texas Stock Exchange | The Texas Stock Exchange focuses on helping US and global enterprises to have access to US equity capital markets, as well as providing a forum for trading and listing public corporations and the expanding universe of exchange-traded products. | $120M | Private Equity | Jun 04, 2024 |  |
| Flash Coffee | Flash Coffee is a tech-enabled coffee chain that customers use their app to order and pay online, choosing to pick up orders from one of the Flash Coffee’s storefronts or order for delivery through major platforms in each market. Flash Coffee was founded in 2019 and is headquartered in Singapore. | $12.1M | Series B | May 11, 2023 |  |
| Flash Coffee | Flash Coffee is a tech-enabled coffee chain that customers use their app to order and pay online, choosing to pick up orders from one of the Flash Coffee’s storefronts or order for delivery through major platforms in each market. Flash Coffee was founded in 2019 and is headquartered in Singapore. | $5.1M | Series B | Oct 16, 2022 |  |
| Kijiji Hub | Kijiji Hub is a multi-disciplined design studio that works on designing, development and launching the next generation of companies. Kijiji Hub helps some of the world’s largest organizations conceptualize, plan, design, develop and launch products. Our work includes data visualizations and fonts, UI and UX, websites and digital experiences,advertising and communications, graphics and identity, strategy and positioning, products and packaging. Our organization is special. We are the only significant design firm where the business owners both create the work and act as the client's first point of contact. This is evidenced by a portfolio that spans for over a decade, numerous industries, and clients of all sizes, which underscores our view that great design cannot happen without passion, intelligence, and — above all — personal devotion. | $650K | Seed | Feb 02, 2022 |  |
| Yellowbrick Data | Yellowbrick Data was founded in 2014 by experts in database and flash memory technologies to simplify data warehousing. They wanted to solve the challenges of high availability, running complex mixed workloads, support for ad-hoc SQL, computing correct answers on any schema, massive scalability and supporting large numbers of concurrent users.Yellowbrick Data empowers companies to make faster decisions with all of their data. Built for enterprises and the hybrid cloud, the Yellowbrick Data Warehouse deploys powerful analytics anywhere, with best-in-class economics. | $75M | Series C | Nov 03, 2021 |  |
| Quant | Quant is a premier quantitative research and investment fund led by engineering, mathematics, and business students at the University of Illinois Urbana-Champaign. We employ state-of-the-art analysis tools like deep learning and natural language processing to gain an edge on financial markets across the globe. | $11K | Pre-Seed | Oct 01, 2021 |  |
| OYO | OYO is a global platform that empowers entrepreneurs and small businesses with hotels and homes by providing full-stack technology that increases earnings and eases operations; bringing affordable and trusted accommodation that guests can book instantly. | $1K | Debt Financing | Jul 16, 2021 |  |
| Kijiji Hub | Kijiji Hub is a multi-disciplined design studio that works on designing, development and launching the next generation of companies. Kijiji Hub helps some of the world’s largest organizations conceptualize, plan, design, develop and launch products. Our work includes data visualizations and fonts, UI and UX, websites and digital experiences,advertising and communications, graphics and identity, strategy and positioning, products and packaging. Our organization is special. We are the only significant design firm where the business owners both create the work and act as the client's first point of contact. This is evidenced by a portfolio that spans for over a decade, numerous industries, and clients of all sizes, which underscores our view that great design cannot happen without passion, intelligence, and — above all — personal devotion. | $275K | Pre-Seed | May 12, 2021 |  |

10 of 19 investments shown.

## Co-investors
- [IVP](https://shizune.co/investors/profile/institutional-venture-partners) — VC Fund, 3 deals together
- [Eventide](https://shizune.co/investors/profile/eventide) — VC Fund, 2 deals together
- [Google Ventures](https://shizune.co/investors/profile/google-ventures) — VC Fund, 2 deals together
- [Surveyor Capital](https://shizune.co/investors/profile/surveyor-capital) — VC Fund, 2 deals together
- [SV Health Investors](https://shizune.co/investors/profile/sv-life-sciences) — VC Fund, 2 deals together
- [Vulpes Ventures](https://shizune.co/investors/profile/vulpes-ventures) — VC Fund, 2 deals together

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## FAQ

### What does Citadel invest in?

Citadel invests primarily in Information Technology, Biotechnology and Health Care startups, most often at Series C and Private Equity stage. Most of the 19 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 Citadel's check size?

Citadel typically joins rounds of $75M–$2B at Series C and $11M–$120M at Private Equity. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Citadel participates in.

### How do I contact Citadel?

Public channels for Citadel 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 Citadel?

The team at Citadel includes Amanda Rubin (Chief Marketing Officer), Gerald A. Beeson (Senior Managing Director, Chief Operating Officer) and Isaac Chang (Head of Trading, Global Fixed Income), among 11 team members tracked by Shizune. 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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