NEW YORK ( TheStreet) -- Seagate ( STX - Get Report) was a big loser in premarket trading on Thursday, tumbling 3.17% to $31.50, after solid state drive developer and rival OCZ ( OCZ) cut its second-quarter revenue forecast.

In a statement released on Wednesday, OCZ forecast revenue between $110 and $120 million, compared to its prior range of $130 million to $140 million.

Amazon ( AMZN - Get Report) shares crept up 0.56% to $247.59 in premarket trading on Thursday ahead of the company's major press event in Santa Monica, Calif., later Thursday.

Starting at 1 p.m. EDT, TheStreet will be live-blogging the event, which is expected to mark the debut of a new Kindle Fire.

Sirius XM ( SIRI - Get Report) and Facebook ( FB - Get Report) were also gainers, rising 0.6% to $2.53 and 0.75% to $18.72, respectively.

Nokia ( NOK - Get Report) shares dipped 1.68% to $2.34 before market open on Thursday as investors continued to digest the company's latest phones.

The Finnish handset maker unveiled its first Windows Phone 8 devices, the Lumia 920 and the Lumia 820, at an event in New York on Wednesday. Investors, though, were initially unmoved by the latest additions, pushing Nokia's stock down almost 16% during the day's trading.

--Written by James Rogers in New York.

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