Archer Aviation Shares Surge 14% As eVTOL Flight Tests And Anduril Deal Fuel Investor Optimism Today

SAN JOSE, Calif. — Shares of Archer Aviation Inc. surged more than 14% Monday, extending a run of gains driven by a series of technical and partnership milestones for the electric air taxi developer, as investors positioned ahead of the company's second-quarter earnings report due after markets close.

The stock closed up 14.22% at $6.39, on volume of nearly 22.7 million shares, well above its three-month average of roughly 42.5 million shares, giving the company a market capitalization of approximately $4.83 billion. Despite Monday's advance, shares remain down 41.40% over the past 12 months, reflecting a difficult stretch for electric vertical takeoff and landing, or eVTOL, companies more broadly over the past year.

Monday's rally followed a piloted round-trip test flight of Archer's Midnight aircraft between Salinas Municipal Airport and Monterey Regional Airport, conducted in coordination with the Federal Aviation Administration. Each leg of the roughly 40-mile route took about nine minutes to complete by air, compared with a typical drive time of 35 minutes or more by car. Archer has said it intends to use the route as a template for scaling similar operations, including potential service in the Los Angeles area, and has pointed to the flight as a step toward participation in the federal government's eVTOL Integration Pilot Program. The company has not yet begun commercial passenger service.

The stock also drew support from continued momentum tied to Archer's expanding partnership with Anduril Industries, the defense technology company known for its autonomous systems work. The two companies have been developing a new autonomous VTOL aircraft platform under the partnership, including a defense-oriented variant referred to as Thunder, which is intended to extend Archer's technology into longer-range, heavier-payload missions beyond its original focus on urban air taxi service. The Anduril collaboration has been credited in recent market commentary with helping push Archer's aircraft development into new defense and government-linked applications, an area investors have increasingly focused on for the company given persistent questions about the near-term commercial timeline for urban air taxi operations.

Institutional buying also appeared to contribute to Monday's move, with Cathie Wood's ARK Invest reported to have purchased roughly 940,000 shares of Archer stock, adding to a stretch of renewed momentum trading and institutional interest in the name over recent sessions.

Archer has also continued to expand its technology offerings beyond aircraft manufacturing in recent weeks. The company disclosed that its aviation artificial intelligence platform, known as ZEE, achieved a technical milestone in predicting real-time aircraft movements on airport surfaces, giving pilots and air traffic controllers additional advance warning of potential safety risks. According to the company, the ZEE system is capable of modeling multiple possible aircraft routes rather than producing a single fixed forecast, and uses satellite imagery to identify runways, taxiways and parking areas. Archer has begun testing the technology at Hawthorne Airport in California, which the company took over operational control of late last year, and has said it has demonstrated the system to both commercial partners and regulators as it pursues potential pilot programs with government agencies.

Monday's share price gains came just ahead of Archer's second-quarter 2026 earnings report, scheduled for release after market close, with a conference call for investors set for later in the day. Analyst estimates compiled ahead of the report called for a quarterly loss of approximately 25 cents per share, alongside revenue of roughly $1.95 million to $2 million, figures that reflect the company's continued position as a pre-revenue, development-stage business rather than one generating meaningful commercial sales. Archer has beaten consensus earnings estimates in three of its trailing four quarterly reports, with an average earnings surprise of nearly 8% over that stretch, though some models had flagged a less certain setup heading into Monday's release given a negative estimate revision trend in the days leading up to the report.

As of its most recent quarterly disclosure, Archer reported approximately $951.1 million in cash on hand, with total cash and short-term investments of roughly $1.78 billion, a liquidity position the company has said provides runway to continue funding its aircraft certification and manufacturing buildout as it works toward commercial launch. The company has previously guided to an annual adjusted EBITDA loss in the range of $170 million to $200 million as it continues to invest heavily in research, development and manufacturing scale-up ahead of anticipated commercial operations.

Archer is one of a small number of companies racing to bring electric air taxi service to market in the United States, alongside competitors such as Joby Aviation, which has also seen its shares decline sharply over the past year amid similar questions about certification timelines and the path to commercial revenue. Shares of both companies have faced pressure for much of 2026 even as each has continued to report technical progress, reflecting broader investor caution about how quickly the eVTOL industry can translate flight-test milestones and partnership announcements into meaningful, sustained revenue.

With Monday's earnings report expected to provide updated detail on Archer's cash position, regulatory progress, and the commercial trajectory of both its air taxi and defense-related programs, investors are likely to look closely at whether the recent run of technical and partnership announcements is beginning to translate into a clearer near-term path toward revenue generation, or whether the stock's rally remains driven primarily by headline-level milestones rather than underlying commercial progress.