Why Is Joby Aviation ($JOBY) Stock Down -8.52% Today? (Find out why any stock moved today on Tickeron.) Shares plunged 8.52% to $5.26, down from the prior session's close of $5.75. Primary catalyst: Barclays downgraded JOBY to Underweight and slashed its price target to $4 from $6. Analyst concerns: Payload capacity, manufacturing scale, cash burn, and an "unjustified" premium valuation. Stock-specific move: Rivals ACHR and EH each rose roughly 5%, diverging sharply from Joby. $SRTA $ASR $OMAB