** Shares of EV maker Rivian RIVN.O rise 5% to $16.67 in premarket trading
** TD Cowen upgrades rating to 'Buy' from 'Hold'; lifts PT to $20 from $17
** Brokerage estimates R2 demand at 212k–335k units once production scales, suggesting upside to 2028 consensus
** "We believe US EV sentiment is approaching a bottom, with the next phase of demand growth likely coming sooner than some might think (2027-28)," TD Cowen said
** Up to last close, stock had fallen about 20% YTD
(Reporting by Kritika Lamba in Bengaluru)
((Kritika.Lamba@thomsonreuters.com))