Why Archer Aviation (ACHR) Stock Just Surged 19%

Archer Aviation’s (NYSE: ACHR) stock jumped 19.4% on Monday, changing hands near $5.30 versus the previous close of $4.44, after the electric air taxi maker unveiled a jointly developed autonomous aircraft platform with defense technology firm Anduril at the Farnborough International Airshow in England.

The pair debuted a series hybrid-electric vertical takeoff and landing (VTOL) platform designed for both commercial and defense use.

Anduril showcased the defense variant, dubbed “Thunder,” a Group 5 autonomous attack rotorcraft — the Pentagon’s heaviest unmanned aircraft classification — built to operate alongside crewed attack and assault aircraft.

WELCOME BONUS - Free Share Bundle When You Invest £50! Get up to £500 cashback for investing with IG.

Invest in 15,000+ shares and ETFs. Open an account now, invest at least £50, and you’ll get a free share bundle worth between £40 and £200. T&Cs apply.

5.0

Open Account Spread bets and CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 68% of retail investor accounts lose money when trading spread bets and CFDs with this provider. You should consider whether you understand how spread bets and CFDs work, and whether you can afford to take the high risk of losing your money.

The clean-sheet design uses dual tiltrotors and a hybrid-electric powertrain to maximize range, endurance and efficiency while cutting acoustic signature, and it can take off and land without a runway.

CEO Adam Goldstein called the collaboration a “first principles” approach rather than a modification of Archer’s existing Midnight air taxi.

The companies said they have already flown full-scale surrogate test aircraft, with Thunder’s maiden flight targeted for 2027. Archer added that it plans to name its first commercial customers for the platform later this week — a disclosure investors are now watching closely for firm order economics rather than non-binding letters of intent.

The rally offers relief for a stock that had fallen roughly 40% year-to-date amid investor anxiety over cash burn, looming shareholder dilution, and the slow pace toward FAA certification and commercial revenue.

Monday’s move reframes Archer’s story from a pure pre-revenue air-taxi bet into a dual-use defense platform play backed by a credible defense prime, though the company remains pre-revenue, cash-burning, and years from profitability by most analyst estimates.