NEW YORK (TheStreet) -- Shares of Vodafone climbed more than 4% in premarket trading on Tuesday amid media reports it may be a joint takeover target for AT&T and Verizon .
The phone giant's shares, which closed down 0.21% at $28.34 during Monday's trading, rose 4.76% to $29.69 before market open.
Vodafone was also the most active premarket Nasdaq stock on share volume 387,389.
Nuance Communications was another big gainer, lifted by Carl Icahn's decision to take a 9.27% stake in the company. The voice recognition company revealed Icahn's stake in a regulatory filing on Monday.
Shares of Nuance continued their recent momentum, climbing 8.13% to reach $21.82 on share volume of 230,204.
BlackBerry was another winner, rising 1.73% to reach $15.37. Apple shares crept up 0.18% to $429.70.
HP , which was downgraded to "sell" from "neutral" by Goldman Sachs, fell 3.82% to $22.42.
In a note released early on Tuesday, Goldman analyst Bill Shope warned that HP's earnings expectations could face downward revisions in the coming quarters, adding that that "any recovery in earnings power will be muted through FY2014."
--Written by James Rogers in New York.
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