archer aviation stock has slipped since going public but marc lore one of the flyingcar company’s biggest investors bought more shares archer ticker achr is developing electric vertical takeoff and landing or evtol aircraft to transport passengers incorporated in 2018 archer noted in a filing with the securities and exchange commission that it plans to open a manufacturing facility in late 2022 archer shares began trading on the nyse on sept 17 after the company merged with a specialpurpose acquisition company