Autonomous defense startup Quantum Systems raised $1.2 billion in a Series D funding round announced Thursday, achieving a valuation of around $8 billion on a post-money basis. The funding comes as investors race to back a new generation of companies developing military technology. The German startup, which develops unmanned systems for land, air and sea, secured the round through co-leads Blackstone, Noteus, Airbus and Advent, with participation from Bond, Fidelity Management and Research Company, Balderton and HV Capital. The capital injection reflects structural shifts in the European defense market creating significant demand for advanced technology adoption, according to Blackstone senior managing director David Kaden.
Quantum Systems Secures $1.2 Billion in Series D Funding
The funding round was co-led by Blackstone, Noteus, Airbus and Advent, with participation from Bond, Fidelity Management and Research Company, Balderton and HV Capital. The round valued the company at around $8 billion on a post-money basis.
"Defense will be defined by autonomous systems that can operate together across domains in real time," said Florian Seibel, co-CEO and co-founder of Quantum Systems. "With Quantum Systems, we are building a next generation neo prime that has the potential to disrupt defense as we know it today." Seibel added that the company is profitable.
Company Allocates Capital to Production and AI Development
Quantum Systems stated the new capital will be used to expand production capacity, strengthen supply chain resilience, scale delivery across allied markets, and fund continued investment in software and AI capabilities.
The company has expanded its production footprint across Germany, Ukraine, the United States, Australia, Romania, the United Kingdom and the Baltics.
Defense Tech Sector Records $17.4 Billion in Fundraising
Defense tech companies have raised a record $17.4 billion so far this year, according to Dealroom, far exceeding the $11.2 billion the sector picked up in 2025.
The biggest raises this year have come from startups in the U.S. Anduril picked up $5 billion in May, while Saronic Technologies and Shield AI raised $1.8 billion and $2 billion in March, respectively.
In Europe, Helsing is set to raise $1.2 billion at an $18 billion valuation, the Financial Times reported in May. Stark picked up 500 million euros ($572 million) in a funding round in June, led by Sequoia Capital and Peter Thiel's Founders Fund.
"A structural shift in the European defense market has created significant demand for capital to support the sector's development and the adoption of advanced technologies," said David Kaden, senior managing director at Blackstone.
Quantum Systems Completes 19,000 Missions in Ukraine
Deployed in Ukraine, the company's systems executed over 19,000 missions in the country in 2025, Quantum Systems stated.
FAQ
What did Quantum Systems announce Thursday?
Quantum Systems announced it raised $1.2 billion in a Series D funding round, giving the company a valuation of around $8 billion on a post-money basis. The round was co-led by Blackstone, Noteus, Airbus and Advent, with participation from Bond, Fidelity Management and Research Company, Balderton and HV Capital.
How much has the defense tech sector raised this year?
Defense tech companies have raised a record $17.4 billion so far this year according to Dealroom, far exceeding the $11.2 billion the sector raised in 2025. The biggest raises this year include Anduril's $5 billion in May, and Saronic Technologies' $1.8 billion and Shield AI's $2 billion in March.
How many missions did Quantum Systems complete in Ukraine?
Quantum Systems' systems executed over 19,000 missions in Ukraine in 2025, according to the company's statement.
