Markets: News  

Tuesday's biggest gaining and declining stocks

CHICAGO (MarketWatch) -- The following stocks were some of the most active in U.S. trading on Tuesday:

Gainers

Bio-Reference Labs (BRLI) rose 6% after Bank of America/Merrill Lynch raised its rating on the stock to buy from neutral.

Central European Media (CETV) shares rose more than 11%. The company reported a successful tender offer on Wednesday morning.

First Solar Inc. (FSLR) rose more than 21% after the maker of thin-film panels said it has entered into a pact to build two large projects in Australia as part of its global expansion.

Genmark Diagnostics Inc. (GNMK) was up 5.5% after the company raised its second-quarter and full-year revenue forecasts.

Gildan Activewear Inc. (GIL) stepped up by 9% after Buckingham Research raised its rating on the stock to buy from neutral.

Reed's Inc. (REED) was up 7% after the soda-drink maker said it has set up "a private label partnership with one of the largest supermarket chains in the country."

U.S.-listed shares of Tam SA(TAM) rose 8.7% after the Brazilian airline said it was delaying a share-swap auction that will give shareholders more time to approve its merger with Lan Airlines (LFL) . The transaction would create Latin America's largest airline. The auction has been pushed back to June 22.

United Rentals Inc. (URI) was up 7% after Morgan Stanley started coverage on the firm at overweight.

Decliners

FactSet Resarch (FDS) fell more than 12% after the provider of financial data reported third-quarter revenue that fell short of most analysts' estimates.

Harman International Industries(HAR) tumbled almost 4% following news that Apple(AAPL) seeks to strike deals with automakers to implement its Siri voice technology and new software mapping application into cars. Apple, which unveiled its plans Monday at its annual developers conference, has announced no official deals. Harman designs car dashboard entertainment and information systems, ranging from music, GPS navigation, wireless Internet and voice-activated telephones.

Telenav Inc. (TNAV) shares fell 3.3% after Robert W. Baird analyst William Power cut his rating on the navigation-software maker to underperform from neutral, and sliced his target price on the stock to $4 a share from $8.

VeriFone(PAY) shares gave up nearly 6% after the company said a jury had ruled against the company in a patent infringement case.

Zynga Inc. (ZNGA) lost 10% Tuesday on the heels of an 8% decline during the previous session. The Wall Street Journal reported that results from a comScore survey showed slowing user growth in the U.S. for Facebook Inc. (FB) Zynga depends on Facebook for the majority of its revenue as most of the online-gaming company's traffic comes from its games being played via Facebook.