Archer Aviation shares dropped nearly 11% after a judge allowed a shareholder lawsuit against the company and its SPAC backers to proceed. The suit claims Archer misled shareholders about its progress and valuation during its SPAC merger. At the same time, major investor Stellantis reported a $2.68 billion first-half loss and kept guidance suspended, raising concerns about its ongoing support for Archer. Some see rival Joby Aviation, with its Toyota partnership, as better positioned in the eVTOL sector.