Archer Aviation IncArcher and Anduril unveiled Thunder, a new autonomous VTOL platform, with first flight planned for 2027.

Archer Aviation shares jumped nearly 20% after the company and defense technology firm Anduril unveiled Thunder, a Group 5 autonomous attack rotorcraft. The stock closed at $5.31, up 19.59%, on trading volume of 95.7 million shares, about 125% above its three-month average. The hybrid-electric vertical takeoff and landing platform is designed for both commercial and defense customers, with first flight planned for 2027 and initial commercial partner announcements expected later this week. Despite the gain, Archer remains down 55% over the past year and has fallen 47% since its 2020 initial public offering.
Archer Aviation IncArcher and Anduril unveiled Thunder, a new autonomous VTOL platform, with first flight planned for 2027.
Joby AviationAnduril co-developed the Thunder platform with Archer, a new product unveiling.