Archer Aviation surges 14% on Anduril autonomous attack rotorcraft partnership

David Moadel Mon, July 20, 2026 at 8:40 AM PDT | 5 min read

• ACHR: +18.22%
• JOBY: +3.39%
• NVDA: +1.52%
• PLTR: +1.16%

Quick Read

• Archer Aviation stock jumped 14% after unveiling "Thunder" with Anduril at the Farnborough Airshow — a Group 5 autonomous attack rotorcraft targeting its first flight in 2027.
• EHang Holdings deliveries cratered from 66 to just 4 units quarter-over-quarter, while Joby Aviation and EHang shares are down 45% and 62% year-to-date respectively, with no company-specific catalysts on Monday for those names.
• Archer Aviation expects to name Thunder's first commercial customers this week, with traders watching whether deals carry firm order economics or just letters of intent.

Archer Aviation (NYSE: ACHR) shares are trading higher in Monday morning action, up 14% to $5.06. The move follows a joint reveal by the company and privately held defense technology firm Anduril of an autonomous vertical takeoff and landing (VTOL) aircraft platform at the Farnborough Airshow.

The pop lands into a rough tape. Archer stock entered Monday down 41% year to date (YTD), part of a broader pre-revenue eVTOL de-rating that has hit the entire cohort of listed operators hard.

Peers Joby Aviation (NYSE: JOBY) and EHang Holdings (NASDAQ: EH) are quieter but still higher. Joby stock is up 2% to $7.41, while EHang stock is up 1% at $5.17. The news catalyst belongs to Archer alone, though.

Anduril Team-Up Unveils "Thunder" Autonomous VTOL

Archer and Anduril presented a series hybrid-electric autonomous VTOL aircraft platform at Farnborough. Anduril debuted the defense variant, "Thunder," a Group 5 autonomous attack rotorcraft designed to fly alongside crewed attack and assault aircraft. Group 5 is the Pentagon's heaviest unmanned aircraft tier, the same weight class as major program-of-record platforms.

The dual-use design uses dual tiltrotors, offers runway-independent VTOL, and cruises efficiently on the wing. The teams have completed multiple full-scale surrogate test flights, with Thunder's first flight targeted for 2027. Archer says it will announce its first commercial customers for the platform later this week.

Archer Aviation CEO Adam Goldstein called Thunder a clean-sheet, first-principles design. In prior commentary tied to the program, Goldstein asserted, "I believe our hybrid aircraft is the most sophisticated vertical lift platform ever developed. It is not incremental, it is generational."

Technology Stack

The autonomy stack behind the aircraft leans on NVIDIA (NASDAQ: NVDA) and Palantir Technologies (NASDAQ: PLTR):

• NVIDIA: Archer has integrated the IGX Thor platform for onboard compute and autonomy-ready flight systems.
• Palantir: Was down-selected as a finalist for the FAA's SMART AI project covering air traffic control modernization.
• Starlink: LEO connectivity rounds out the connectivity layer for the Midnight air taxi.

Financial Context

Archer's Q1 2026 report framed the setup. The company posted revenue of $1.6 million and a net loss of $217.7 million, versus a $93.4 million loss in the prior-year period.

This article originally appeared on 24/7 Wall St.