NEW YORK ( TheStreet) -- Aluminum producer Alcoa ( AA) was falling 2.8% to $17.27 in premarket trading Tuesday after reporting first-quarter earnings that squeaked past Wall Street expectations by a penny, but its top line missed analysts' estimates.


Oil giant BP ( BP) was falling 1.8% to $45.83 amid reports that it may be facing a lawsuit of around $10 billion from the management of joint venture TNK-BP over a violation of their shareholder contract.


Mobile device maker Nokia ( NOK) revealed two new smartphone products operating on the updated Symbian software. Nokia was down 0.7% to $8.97.


Consumer giant Procter & Gamble ( PG) announced a 9% quarterly dividend increase. P&G was down 0.1% to $62.10.


Teva Pharmaceutical ( TEVA) was rising 0.1% to $49.05 as Reuters reported that its experimental oral multiple sclerosis drug reduced the disease's relapse rate by 23% over a placebo in a late stage study.


Santa Clara, Calif.-based mobile networking equipment maker Extreme Networks ( EXTR) warned of a revenue shortfall in its fiscal third quarter.


Drug company Durect ( DRRX) said a Phase II clinical trial for its shingles-related, chronic lower back pain treatment Eladur didn't demonstrate a significant improvement for patients compared to a placebo.


Computer hardware company Hewlett-Packard ( HPQ) considered buying Tibco Software ( TIBX) until two weeks ago when the talks petered out, Reuters reported, citing two sources familiar with the matter.


Marine dry bulk transportation services provider Safe Bulkers ( SB) said it plans to offer 5 million common shares, proceeds of which will be used for vessel acquisitions, capital expenditures and other general corporate purposes, including debt repayment.

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