Archer Aviation Plunges 8.5 as $1.68 Billion Selloff Ranks 51st Amid Certification Delays and Flight Test Deferrals

Archer Aviation (ACHR) declined 8.50% on October 7, 2025, with a trading volume of $1.68 billion, ranking 51st in market activity for the day. The selloff followed a series of operational updates and regulatory developments affecting the electric vertical takeoff and landing (eVTOL) company’s strategic roadmap. Recent disclosures highlighted delays in certification timelines for its Midnight air taxi model, prompting investor caution ahead of anticipated 2026 regulatory milestones.

Analysts noted that the stock’s sharp decline was exacerbated by a lack of near-term catalysts, as Archer announced the deferral of its first commercial flight test to Q2 2026. While the company emphasized long-term partnerships with infrastructure firms, the absence of immediate revenue-generating activities weighed on short-term sentiment. Market participants also cited broader sector weakness in aviation technology stocks, though Archer’s drop outpaced peers due to its high valuation multiple.

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