Archer Aviation Shares Plunge 5.56% as $320M Volume Ranks 363rd Amid Certification Delays and Production Cost Overruns

On July 29, 2025, Archer Aviation (ACHR) closed with a 5.56% decline, trading with a daily volume of $320 million, ranking 363rd in market activity. The drop followed mixed signals from operational updates and regulatory developments. A recent filing highlighted delays in certification timelines for its eVTOL prototypes, while production costs for the Maker 400 aircraft exceeded initial estimates by $150 million. Investors reacted cautiously to these developments, particularly as the company announced a $300 million convertible bond offering to fund R&D and manufacturing expansions. The financing move, while addressing liquidity needs, raised concerns about potential dilution for existing shareholders.

Regulatory scrutiny also weighed on sentiment, with the FAA requesting additional safety data for its lithium-ion battery systems. This comes amid broader industry challenges, including supply chain bottlenecks for critical components like powertrain modules. Analysts noted the stock’s volatility reflects sector-wide uncertainty rather than isolated risks, as competitors face similar technical and certification hurdles. The market’s focus remains on Archer’s ability to maintain its first-mover advantage in the urban air mobility space while managing capital expenditures.

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