UBS issued a rare double-downgrade on Rivian , waving the warning flag amid signs of trouble for the battered electric vehicle stock. Analyst Joseph Spak lowered his rating to sell from buy and slashed his price target to $8 from $24. Spak's price target implies shares will fall 30.1% from Thursday's close. RIVN YTD mountain Rivian, year to date Rivian stock lost nearly 1% before the bell Friday. JPMorgan lowered its rating on the stock to underweight from neutral and cut its price target to $11.

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Persons: Joseph Spak, Spak, there's, Rivian, Ryan Brinkman Organizations: UBS, UBS wasn't, JPMorgan Locations: Thursday's, Rivian