Advent

Advent (Advent International) is one of four co-leads, alongside Blackstone, Airbus and Noteus, in Quantum Systems' reported $1.2 billion Series D financing, signed 2 July 2026 and reported to value the Munich-based drone maker at roughly $8 billion, more than double its prior mark. Advent's managing director Mike Marshall said the firm views Quantum Systems as sitting "at the centre of the shift towards unmanned systems", citing its product depth, customer traction and industrial ambition to scale internationally.

Advent International is a long-established global private equity firm with a multi-decade history of buyouts and growth investments across industrial, financial and technology sectors; its participation alongside Blackstone and Airbus places large-scale, mainstream private capital squarely behind a European defence-tech company for the first time at this size.

The round's significance lies less in Advent's individual role than in the composition of the syndicate: a traditional buyout house co-investing with an aerospace prime (Airbus) and a specialist growth investor (Noteus) signals that European defence-tech capital formation has moved beyond venture funding into the territory of large-cap private equity, tracking the same procurement-driven demand surge visible elsewhere in this week's drone-industry news (AeroVironment's US and NATO awards, the UK's first LEAP funding).