NEW YORK (

TheStreet

) --

Nokia

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is cutting an additional 3,500 jobs by 2012 as the Finnish handset maker tries to turn itself around. The company also

plans on closing a manufacturing plant

in Romania by the end of this year.

Shares of Nokia jumped 4% in premarket trading Thursday to $5.77.

Yahoo!

(YHOO)

founder Jerry Yang has temporarily taken control of the company while it searches for new leadership

after the departure of CEO Carol Bartz earlier this month

, according to

Business Insider

. The company is reportedly exploring alternatives, including a sale to private-equity buyers.

Shares of Yahoo! rose 1.5% in premarket trading to $14.40.

Amazon

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shares edged up 1.8% to $233.88 a day

after launching its Kindle Fire tablet

designed to compete against

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Apple's

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iPad. The device has a 7-inch color touch screen and will sell for $199, less than half the cost of the least expensive version of the iPad.

Hewlett Packard

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is reportedly working with

Goldman Sachs

to protect itself against potential activist investors, according to

The Wall Street Journal

. The company has felt vulnerable to a takeover following the ousting of former CEO Leo Apotheker, who was replaced by Meg Whitman.

Shares of HP jumped 2.5% to $23.76 in premarket trading on Thursday.

More than 52% of BlackBerry customers are planning on switching to

Apple's

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iPhone 5 once the phone hits shelves, according to a report by mobile ad network InMobi. More than a quarter of Android users are also planning to switch, the report found.

--Written by Olivia Oran in New York.

>To follow the writer on Twitter, go to

http://twitter.com/Ozoran

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