Shares of electric vertical take-off and landing (eVTOL) companies Archer Aviation Inc (NYSE: ACHR) and Joby Aviation Inc (NYSE: JOBY) are tumbling this morning after bearish notes from JPMorgan.The analyst downgraded ACHR to "neutral" from "overweight" and JOBY to "underweight" from "neutral," citing election-driven market shifts and broader sector dynamics. While both stocks have outperformed the clean tech sector since the Trump victory, they are viewed as "speculative tech beneficiaries," akin to retail ...