FUNDING$1.2B Series DQuantum Systems Raises $1.2B Series D as Europe Bets Big on Sovereign DroneQuantum Systems, a German maker of autonomous drones and multi-domain uncrewed systems, closed a $1.2 billion Series D co-led by Blackstone, Airbus Defence and Space and Advent International, more than doubling its valuation to roughly $8 billion.Jul 3, 2026