Altimeter Capital
VC Fund
Menlo Park, United States
Altimeter Capital is a technology-focused investment firm based in Menlo Park, CA and Boston, MA. Altimeter manages a long/short public equity fund and growth-stage private capital funds.
- Total investments:
- 139
- Last investment:
- Lead investor:
- 42%
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Altimeter Capital invests in
Stages Altimeter Capital invests in
Countries Altimeter Capital invests in
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Gwendolyn Umbach
|
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Jamin Ball
|
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Pauline Yang
|
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Brad Gerstner
|
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|
John Kiernan
|
Investment Focus
Industry
- Software 28 (20%)
- SaaS 14 (10%)
- Analytics 12 (9%)
- Information Technology 12 (9%)
- FinTech 11 (8%)
Stage
- Series C 22 (16%)
- Series B 21 (15%)
- Series D 21 (15%)
- Series E 15 (11%)
- Series F 11 (8%)
Country
- United States 66 (47%)
- India 3 (2%)
- Germany 2 (1%)
- United Kingdom 2 (1%)
- China 1 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
|
Gwendolyn Umbach
Investor
|
Investor | Total investments: 0 | Find email | |
|
Jamin Ball
Partner
|
Partner | Total investments: 20 | Find email | |
|
Pauline Yang
Partner
|
Partner | Total investments: 6 | Find email | |
|
Brad Gerstner
Founder & CEO
|
Founder & CEO | Total investments: 20 | Find email | |
|
John Kiernan
Chief Financial Officer and Partner
|
Chief Financial Officer and Partner | Total investments: 0 | Find email | |
| See all 8 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Volta
|
Volta is a vertically integrated AI infrastructure platform. The company develops, finances, builds, and operates AI factories by integrating institutional capital, powered land, data centers, compute, software, and operations. | $300M / Series A / Aug 04, 2026 | |
K2 Space
|
K2 Space builds and supplies high-power satellite platforms designed for diverse orbital missions using vertically integrated hardware and manufacturing processes. The company focuses on developing large “Mega Class” satellites with enhanced power, payload capacity, and propulsion systems to support communications, sensing, and other spaceapplications. K2 Space offers engineered solutions for factory assembly, launch stacking, and orbital operations that aim to serve Low Earth Orbit, Medium Earth Orbit, and Geostationary missions. Its offerings include resilient spacecraft designs tailored to withstand harsh space environments and support scalable constellation deployments. | $500M / Series D / Jul 30, 2026 | |
Elorian
|
Elorian specializes in creating AI models that can handle a variety of data kinds simultaneously. | $55M / Seed / Apr 09, 2026 | |
XBOW
|
XBOW operates autonomously, carrying out commands and analyzing the results to achieve higher-level objectives. | $120M / Series C / Mar 18, 2026 | |
Nexthop AI
|
Nexthop AI develops AI infrastructure and custom networking solutions for large cloud operators, focusing on enhancing operational efficiency and connectivity within complex network environments. The company offers a range of services, including network automation, data management, and analytics, enabling clients to optimize their networkperformance and streamline their operations. Through its innovative solutions, Nexthop AI addresses the challenges faced by cloud operators, providing tools that facilitate seamless integration and scalability in dynamic computing environments. Additionally, Nexthop AI emphasizes compatibility with open-source network operating systems, allowing clients to leverage existing technologies while implementing advanced networking strategies. | $500M / Series B / Mar 10, 2026 | |
OpenAI
|
OpenAI is an AI research and deployment company that conducts research and develops machine learning technologies. OpenAI works on projects that involve autonomous learning and task performance. It serves industries such as technology, healthcare, and education. | $122B / Venture - Series Unknown / Feb 27, 2026 | |
Cerebras Systems
|
Cerebras Systems is a startup backed by premier venture capitalists and the industry’s most successful technologists. They are serially successful entrepreneurs dedicated to solving problems others are afraid to tackle. They value integrity, passion, real world problem solving ability, and a sense of humor. | $1B / Series H / Feb 04, 2026 | |
LiveKit
|
Stripe for real-time communications | $100M / Series C / Jan 22, 2026 | |
Parloa
|
Parloa is a Conversational AI platform for revolutionary AI technology in customer dialogue and is the ideal answer to increased customer expectations for service quality on more and more channels. Large companies such as ERGO, Decathlon, Swisslife and the German Red Cross automate their most important communication channels with Parloa. Thisallows customer concerns, primarily on the phone, to be identified within seconds and repetitive tasks to be automated. Instead of generating data silos, our customers optimize several service channels simultaneously thanks to unified training data. | $350M / Series D / Jan 15, 2026 | |
|
K2 Space
|
K2 Space builds and supplies high-power satellite platforms designed for diverse orbital missions using vertically integrated hardware and manufacturing processes. The company focuses on developing large “Mega Class” satellites with enhanced power, payload capacity, and propulsion systems to support communications, sensing, and other spaceapplications. K2 Space offers engineered solutions for factory assembly, launch stacking, and orbital operations that aim to serve Low Earth Orbit, Medium Earth Orbit, and Geostationary missions. Its offerings include resilient spacecraft designs tailored to withstand harsh space environments and support scalable constellation deployments. | $250M / Series C / Dec 11, 2025 | |
| See all 139 investments → | |||
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FAQ
What does Altimeter Capital invest in?
Altimeter Capital invests primarily in Software, SaaS and Analytics startups, most often at Series C and Series B stage. Most of the 139 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Altimeter Capital?
Public channels for Altimeter Capital include LinkedIn 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 Altimeter Capital?
The team at Altimeter Capital includes Gwendolyn Umbach (Investor), Jamin Ball (Partner) and Pauline Yang (Partner), among 8 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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