** Tesla's TSLA.O shares fall 1.4% to $413.72 premarket

** RBC Capital Markets raises PT to $500 from $475, citing a potential SpaceX acquisition

** In a separate note, brokerage starts coverage on SpaceX SPCX.O with "outperform" rating and PT of $225

** Shares of SpaceX down 1.2% in premarket

** SpaceX's quiet period ended today, clearing the way for trading ahead of its inclusion in the Nasdaq-100

** "In our view, the main rationale for a deal is operational collaboration including proprietary chip manufacturing, megapacks for data center energy needs, and collaborative AI training and fleet management services" - RBC Capital

** Brokerage says the most likely deal structure would be all-stock transaction, with SpaceX acquiring Tesla at a 20%–30% premium to its current share price, which would value Tesla at roughly $500 per share

** New price target represents a 19.11% upside to the stock's last close of $419.77

** 24 of 54 brokerages rate Tesla "buy" or higher, 23 "hold" and 7 "sell" or lower; median PT $425 - data compiled by LSEG

** As of last day's close, Tesla down 6.65% YTD