Shares of Archer Aviation ( ACHR -0.09%) fell this week. The company's stock lost 20.7% as of 1:58 p.m. ET on Friday. The loss comes as the S&P 500 ( ^GSPC -0.30%) fell 2.1% and the Nasdaq-100 lost 2% ...

Culper Research's core argument is that Archer Aviation is purposely misleading shareholders. They've taken what could be called a " short sell with receipts " approach -- citing documented timeline ...

Flying cars once felt like science fiction and Jetsonian daydreams, but now it is a high-stakes race to reshape urban travel.