Citadel
VC Fund
Chicago, United States
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 the highest and best uses of capital to generate superior long-term returns for the world’s preeminent public and private institutions.
- Total investments:
- 21
- Last investment:
- Lead investor:
- 14%
Last updated:
For AI agents: llms.txt
Industries Citadel invests in
Stages Citadel invests in
Countries Citadel invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 12 contacts → | |||
Round size
- Seed
- $650k–$10M
- Series C
- $75M–$2B
- Private Equity
- $11M–$120M
Investment Focus
Industry
- Information Technology 5 (24%)
- Biotechnology 4 (19%)
- Health Care 3 (14%)
- Retail 2 (10%)
- Hospitality 2 (10%)
Stage
- Private Equity 4 (19%)
- Series C 3 (14%)
- Seed 2 (10%)
- Pre-Seed 2 (10%)
- Series A 2 (10%)
Country
- United States 10 (48%)
- India 2 (10%)
- Spain 1 (5%)
- Latvia 1 (5%)
- Germany 1 (5%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Amanda Rubin
Chief Marketing Officer
|
Chief Marketing Officer | Total investments: 0 | Find email | |
Gerald A. Beeson
Senior Managing Director, Chief Operating Officer
|
Senior Managing Director, Chief Operating Officer | Total investments: 0 | Find email | |
Isaac Chang
Head of Trading, Global Fixed Income
|
Head of Trading, Global Fixed Income | Total investments: 0 | Find email | |
Jeffrey Ryan
Quantitative Analyst
|
Quantitative Analyst | Total investments: 0 | Find email | |
Joe Nelson
Trader
|
Trader | Total investments: 0 | Find email | |
| See all 12 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Nscale provides infrastructure and cloud services designed for artificial intelligence computing workloads. The company develops and operates data centers equipped with large clusters of graphics processing units and supporting networking and storage systems used for training, fine-tuning, and running machine learning models. Its platform integrates compute hardware, data center operations, orchestration software, and data services to manage AI workloads across owned and collocated facilities. The infrastructure is used by enterprises, research organizations, and technology companies that require large-scale processing capacity for generative AI and other data-intensive applications. Nscale also supports deployment and management of AI environments through systems that coordinate resource allocation, workload scheduling, and distributed computing operations. | $3.4B / Convertible Note / Sep 25, 2026 | ||
| Ionic Digital is an innovator in the bitcoin mining industry. | $400M / Venture - Series Unknown / Jun 26, 2026 | ||
| Nscale provides infrastructure and cloud services designed for artificial intelligence computing workloads. The company develops and operates data centers equipped with large clusters of graphics processing units and supporting networking and storage systems used for training, fine-tuning, and running machine learning models. Its platform integrates compute hardware, data center operations, orchestration software, and data services to manage AI workloads across owned and collocated facilities. The infrastructure is used by enterprises, research organizations, and technology companies that require large-scale processing capacity for generative AI and other data-intensive applications. Nscale also supports deployment and management of AI environments through systems that coordinate resource allocation, workload scheduling, and distributed computing operations. | $2B / Series C / Mar 09, 2026 | ||
| 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 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 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 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 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 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 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 | ||
| See all 21 investments → | |||
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FAQ
What does Citadel invest in?
Citadel invests primarily in Information Technology, Biotechnology and Health Care startups, most often at Private Equity and Series C stage. Most of the 21 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Citadel invest in?
Citadel typically joins rounds of $650k–$10M at Seed, $75M–$2B at Series C and $11M–$120M at Private Equity. These are whole funding-round sizes, not Citadel's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Citadel took part 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 12 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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