Tesla shares edged higher in early Friday trading, but have lost nearly have of their value since mid-December, and a top Wall Street analyst suggests there could be more declines ahead tied to weakness in the group's core automaking business.

Another analyst cut a target price for Tesla stock because car business fundamentals are “spoiling razzle-dazzle momentum.” The price target cuts are piling up. On Friday, Wells Fargo analyst Colin Langan cut his Tesla price target to $130 from $135.

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