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Tamarack Global

Actively deploying

Greenwich · 4 people tracked

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Tamarack Global is a venture fund manager based in Greenwich. SEC filings show 2 venture funds on record, most recently Tamarack Global Opportunities II, LP ($200M offering) filed June 2026.

Source: SEC EDGAR Form D filings. Firm website data not yet available.

HQ
Greenwich, US
Tracked investments
38

Team · 4 people

from the firm's website
Jamie Lee· Managing Partner

Co-founder and Managing Partner of Tamarack Global. Career began in derivatives at Goldman Sachs, followed by technology advisory at JPMorgan and management of a $1.5 billion equity long/short portfolio at Coatue Management.

John McCormick· Founder & Managing Partner

Founder of Tamarack Global with background in banking and hedge funds. Developed investment thesis around digital economy and data intelligence companies serving finance and intelligence sectors. Currently serves on boards of Figure AI, Fuse Energy, and a stealth automotive company.

Rob Eloff· Partner

Capital markets professional who transitioned to private equity and venture. Co-founded Lateral Frontiers backing critical infrastructure technologies, and invested in frontier technologies including materials, robotics, and energy companies as a partner to family offices and founders.

Shuo Cheng· Partner

Technology and energy specialist with prior experience in tech advisory at J.P. Morgan, operations at hardware startup SnowPlus Technology, and renewables/hardware coverage at UBS. Invested in energy-related private funds and co-investments at New Holland Capital.

What they invest in

from 4 of 38 portfolio companies

AI & Machine Learning ×2Deep Tech ×2Enterprise Software ×2Advanced Manufacturing ×1Climate Tech ×1Developer Tools ×1Fintech ×1SaaS ×1

HQs:United Kingdom×1United States×1

Investments · 38 tracked

founders shown can be your intro path
Antithesisantithesis.comin𝕏✓ verified

Antithesis provides deterministic simulation testing software that automatically finds and reproduces bugs in mission-critical software systems. The platform helps engineering teams in tech companies reduce production defects and accelerate development cycles for distributed systems and complex software.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaS

Will Wilson(CEO & Co-Founder)inDave Scherer(Co-Founder)

10 Figure
12 Fuse Energy
ABL Space Systems

Defense technology company developing modular, rapidly deployable barrier systems for force protection in austere environments.

Archer Aviation

Developing vertically integrated electric aircraft for urban air mobility, with partnerships from United Airlines and Stellantis.

Blue Energy

Designing mass-producible nuclear power plants and de-risking nuclear construction through fixed-price contracting.

Blue Energy Nnrkk
Chaos Industries

Multi-domain defense technology company founded by alumni from Palantir, Raytheon, and Epirus.

Chirp
Chirp Robotics

Defense technology company building autonomous systems to neutralize aerial drone threats at scale.

Divergent 3D

AI-powered manufacturing company with modular digital factory for automotive, aerospace, and defense sectors.

EARTH AI

Critical metals discovery business leveraging AI to reduce cost and time for discovering minerals essential to energy transition.

Figure

Building autonomous humanoid robots to automate manual labor globally with advanced AI and robotics technology.

From Droughts to Downpoursrainmaker.com

Rainmaker uses cloud seeding technology to combat water scarcity by generating freshwater at scale. The company operates in the climate tech and water security sector, positioning cloud seeding as a more efficient alternative to desalination and water pipelines.

Climate TechDeep TechEl Segundo, US

Fuse Energy

Accelerating proven fusion energy via Magnetized-Liner Inertial Fusion with lower capital requirements than peer approaches.

Genies

Avatar technology company enabling Gen Z users to create avatars, wearable fashion, and digital experiences in web3 spaces.

Impulse
Impulse Space

In-space logistics provider offering last-mile payload delivery, debris mitigation, satellite life extension, and Mars missions.

Isembardisembard.comin𝕏

Isembard builds software and operates a network of distributed precision factories to accelerate manufacturing from prototype to factory-scale production. The company serves critical industries seeking sovereign manufacturing capability and supply chain resilience in the West.

Advanced ManufacturingAI & Machine LearningDeep TechEnterprise SoftwareLondon, GB

Alexander Fitzgerald(CEO)

Isembard

Distributed manufacturing company deploying modular automated factories for high-precision aerospace, defense, and energy components.

Natrion

Developing semi-solid state battery technology to enhance electric vehicle capabilities and durability.

PHOSPHOR

AI-powered project finance platform that standardizes and streamlines the project finance process using natural language processing.

Poseidon
Poseidon Aerospace

Developing autonomous unmanned seaplanes to move cargo faster and more cost-effectively while bypassing runway infrastructure.

R·E·LOAD Energy

Rapidly deploys powerparks using software-optimized solutions to connect hyperscalers, clean energy developers, and infrastructure capital.

Radiant Nuclear

Building compact portable nuclear fission reactors providing 1.2 MW electricity and 1.9 MW thermal power with five-year fuel capacity.

Rainmaker

Advanced cloud seeding technology company using meteorological software and novel nucleation agents to enhance precipitation over drought regions.

Rainmakerrainmaker.nycin𝕏

Rainmaker provides a cryptocurrency wallet using account abstraction technology that allows users to open accounts via email, fund them directly from traditional banking sources, and participate in decentralized finance without paying blockchain transaction fees.

Fintech

Carlos Reyes Stoneham(Founder)inBrent Traut(Founder)in

Ready ai
ReadyAI

Low-cost AI application builder for creators and businesses using the Bittensor network with advanced data tagging and synthetic data generation.

Reload
RILIAN TECH

Security solutions company helping U.S. and allies secure global markets and critical infrastructure with cutting-edge technologies.

Stealth EV
Terminal Industries
The New Industrial Corporation

Investment and project development firm combining venture capital with project execution to scale technology companies in industrial sectors.

Titan Dynamics

Transforming aerospace manufacturing with AI-driven design tools and vertically integrated additive manufacturing for rapid UAS production.

Venus Aerospace

Building dual-use rocket engines and thrusters powering hypersonic drones and spaceplanes, with focus on DoD contracts and hypersonic vehicle development.

Vest

LatAm app-based investment platform providing access to global financial markets for users in Mexico, Colombia, and Brazil.

Frequently asked questions

What sectors does Tamarack Global focus on?
Tamarack Global focuses on Advanced Manufacturing, AI & Machine Learning, Defense Tech, Hardware, Space Tech.
Where is Tamarack Global located?
Tamarack Global is headquartered in Greenwich, US.

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