Will This Analyst Upgrade Help Twitter (TWTR) Stock Today? (Update)

Update (9:36 a.m.): Updated with Thursday market open information.

NEW YORK (TheStreet) -- Cantor Fitzgerald upgraded Twitter  (TWTR) to "buy" from "hold" and set a $40 price target. The firm cited valuation, as the stock has pulled back 50%.

The stock was up 3.46% to $34.94 at 9:35 a.m. on Thursday.

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