BUZZ-U.S. STOCKS ON THE MOVE-Twitter, Staples, 3D printer makers

(For faster updates on individual market-movers, Eikon users please use search string "STXBZ US"; for the Day Ahead newsletter, http://link.reuters.com/mex49s; for the Morning News Call newsletter, http://link.reuters.com/nex49s) U.S. stocks extended their gains in afternoon trading on Tuesday as the benchmark S&P 500 index continued a rally from the prior session, fueled by hopes of a deal on Greek debt and by rising oil prices. The Dow Jones industrial average was up 1.58 percent at 17,635.83, the S&P 500 was up 1.18 percent at 2,044.75 and the Nasdaq Composite was up 0.18 percent at 4,685.38.

** TWITTER INC (Xetra: A1W6XZ - news) , $40.02, +6.83 pct

The microblogging site said promoted tweets, or tweets by brands, to appear on third-party mobile apps, websites under new advertising distribution program. Its first partners are newsreader app Flipboard and Yahoo Japan.

** MARVEL TECHNOLOGY GROUP LTD, $15.86, +2.99 pct

Lenovo Group Ltd may be interested in buying part or all of the chipmaker, thestreet.com reported, citing a Chinese newspaper. (http://bit.ly/1z8jd0h)

** NOKIA CORP, $7.843, +3.20 pct

The Finnish network equipment maker's board proposed that its annual general meeting authorize the board to resolve to repurchase up to 365 million Nokia (Swiss: NOK1V.SW - news) shares, using funds in the unrestricted shareholders' equity.

** BENCHMARK ELECTRONICS INC (NYSE: BHE - news) , $23.23, -6.10 pct

The electronics manufacturer reported fourth-quarter revenue below average analysts estimate as demand in its computing and telecom business fell. The company also forecast profit and revenue for the first quarter below estimate.

** SALIX PHARMACEUTICALS LTD (NasdaqGS: SLXP - news) , $140.85, +5.39 pct

Canadian drugmaker Valeant Pharmaceuticals is in talks to buy Salix, Bloomberg reported, quoting people with knowledge of the matter. British drugmaker Shire Plc (Xetra: S7E.DE - news) was also interested, Bloomberg said. (http://bloom.bg/1Da0N5B)

** M/A-COM TECHNOLOGY SOLUTIONS HOLDINGS INC, $30.08, -6.87 pct

The chipmaker announced an offering of 6.5 mln shares on Monday. It will offer 4.5 million shares, with remaining being offered by majority shareholder and board Chairman John Ocampo and his affiliates, and funds affiliated with Summit Partners LP. The company had about 47.8 million shares outstanding as of Jan. 29, according to Thomson Reuters data.

** TELENAV INC (NasdaqGS: TNAV - news) , $7.72, +17.50 pct

Navigation software maker posts rise in quarterly revenue for the first time in five quarters and the biggest increase in ten quarters. Second-quarter revenue rose 7 percent, helped by strong software demand and higher income from mobile advertising.

** STAPLES INC (NasdaqGS: SPLS - news) , $19.035, +11.06 pct

** OFFICE DEPOT INC (NasdaqGS: ODP - news) , $9.24, +21.10 pct

The office-supply chains are in advanced talks to merge, the Wall Street Journal reported, citing people familiar with the matter.

Graphic on companies' share performance, (http://link.reuters.com/fag93w)

** STRATASYS LTD (Xetra: A1J5UR - news) , $56.67, -29.23 pct

** 3D SYSTEMS CORP, $28.55, -5.62 pct

** VOXELJET AG (NYSE: VJET - news) , $8.08, -4.04 pct

Stratasys cut its 2014 adjusted profit estimates for the second time and said it took a $100 million-$110 million charge in the fourth quarter related to its MakerBot home 3D printers business.

Shares (Berlin: DI6.BE - news) of other 3D printer makers also fell.

** MER TELEMANAGEMENT SOLUTIONS LTD (NasdaqCM: MTSL - news) , $1.71, +78.13 pct

The company, which provides billing services to telecom companies, will buy Israeli online video advertising software maker Vexigo Ltd in a cash-and-stock deal to diversify its telecom products and services.

** ONCONOVA THERAPEUTICS INC (NasdaqGS: ONTX - news) , $2.56, -36.08 pct

The drug developer said its partner, Baxter International (NYSE: BAX - news) Inc will not develop the oral form of cancer drug for lower risk MDS patients.

** RENT-A-CENTER INC, $30.3101, -13.47 pct

The rent-to-own home furniture retailer forecast lower-than-expected 2015 profit as same-store sales growth slowed in the United States, its biggest market, and its Mexico business continued to report losses.

Oil and gas producers

** BP PLC, $41.04, +2.96 pct

** ENERGY XXI LTD (NasdaqGS: EXXI - news) , $3.545, +8.74 pct

** BREITBURN ENERGY PARTNERS, $9.0734, +17.99 pct

Oilfield services providers

** DENBURY RESOURCES INC (NYSE: DNR - news) , $8.52, +9.94 pct

** BAKER HUGHES INC, $61.71, +3.31 pct

** HALLIBURTON CO, $43.38, +4.50 pct

Contract drillers

** TRANSOCEAN LTD (NYSE: RIG - news) , $18.55, +7.35 pct

** NABORS INDUSTRIES LTD (NYSE: NBR - news) , $12.735, +6.04 pct

Oil rose as BP announced a cut in capital expenditure for 2015. Oil has gained more than 15 pct since Thursday after data showed the number of U.S. drilling rigs had fallen the most in a week in nearly 30 years.

** LUMINEX CORP, $15.255, -13.72 pct

The biological testing products maker's first-quarter revenue forecast was largely below the average analyst estimate.

** GREEN DOT CORP, $14.25, -4.75 pct

The debit card company's shares fell for the third straight session after it forecast 2015 adjusted earnings that missed analysts' estimates. The stock has lost a quarter of its value in the past two sessions after company forecast 2015 adjusted earnings that missed analysts' average estimate.

** TWIN DISC INC, $18.62, +14.37 pct

The power transmission equipment maker's second-quarter earnings and revenue beat estimate due to higher shipments, sales to customers in North America.

** ARCH COAL INC (NYSE: ACI - news) , $1.08, +14.21 pct

The U.S. miner said it expected costs in the Powder River Basin and Appalachian regions to fall this year, helped partly by lower diesel prices and easing railroad snarls.

** NEW YORK TIMES CO, $13.64, +6.90 pct

The newspaper publisher reported higher-than-expected quarterly revenue and profit, as higher digital subscription and advertising sales largely balanced a fall in print ad revenue.

** LENDINGCLUB CORP, $20.04, +4.05 pct

Alibaba Group Holding Ltd is teaming with the online lender to offer financing to U.S. businesses to buy from Chinese suppliers, hoping to make it easier for American firms to tap the world's largest economy.

** HI-CRUSH PARTNERS LP, $35.493, +9.18 pct

The frac sand maker's fourth-quarter EBITDA almost doubled, helped by higher output and lower costs.

** ISIS PHARMACEUTICALS INC (Stuttgart: ISI.SG - news) , $64.47, -6.12 pct

The drugmaker's experimental diabetes drug took a longer-than-expected 36 weeks to reduce blood sugar levels in patients with type 2 diabetes.

** AMEDICA CORP, $0.7296, +4.23 pct

The medical device maker said the U.S. Food and Drug Administration expanded usage of its interbody fusion products to include multi-level cervical treatment.

** LEAR CORP (NYSE: LEA - news) , $107.7, +4.78 pct

Activist investor Mick McGuire has urged the company to split its car seat and electrical parts businesses into two publicly traded companies.

** GANNETT CO, $33.22, +5.43 pct

The publisher of USA Today reported a 24 percent rise in quarterly revenue as television broadcasting revenue more than doubled.

** DAVE & BUSTER'S ENTERTAINMENT INC (NasdaqGS: PLAY - news) , $29, +3.87 pct

The restaurant and arcade chain operator expects to earn higher-than-expected revenue for the fourth quarter ended Feb. 1. For the fourth quarter, the company expects to earn between $203.8 million and $204.8 million, compared to average analyst estimate of $197.06 million.

** EATON CORP PLC, $69.98, +8.66 pct

The maker of electrical and hydraulics systems said lower costs helped its quarterly profit beat estimates.

** AGCO CORP, $48.78, +9.10 pct

The agricultural equipment maker reported a fourth-quarter profit that beat analysts' average estimate, helped by a 17 percent decline in SG&A expenses.

** SANTANDER CONSUMER USA HOLDINGS INC, $19.82, +6.39 pct

Fourth-quarter profit attributable to shareholders of the auto finance unit of Spanish lender Banco Santander (Amsterdam: SANT.AS - news) more than doubled as the company sets aside less money to cover bad loans.

** GNC HOLDINGS INC (NYSE: GNC - news) , $42.99, -2.03 pct

New York Attorney General Eric Schneiderman on Monday asked four retailers, including the nutritional supplements retailer, to halt sales of some store brand herbal supplements.

** CERAGON NETWORKS LTD (NasdaqGS: CRNT - news) , $0.9516, +7.04 pct

The Israeli wireless network technology and service provider said its IP-20 platform, used for efficient data transmission, has been selected by a large telecommunications service provider for various projects in multiple regions.

** GENERAL MOTORS CO, $34.07, +2.90 pct

** FORD MOTOR CO (NYSE: F - news) , $15.695, +2.78 pct

** FIAT CHRYSLER AUTOMOBILES, $13.9, +2.96 pct

January car sales by the three Detroit automakers topped analysts' expectations, as low gas prices and easy credit terms helped fuel sales of utility vehicles and big pickups.

** HEADWATERS INC, $14.91, +3.40 pct

The construction and building products maker reported better-than-expected Q1 profit and revenue helped by increase in product volumes and prices in its construction materials business.

** AUTONATION INC (NYSE: AN - news) , $62.82, +5.86 pct

The largest U.S. auto dealer group posted a stronger-than-expected quarterly profit and said it still expected U.S. industry new-vehicle sales in 2015 to top 17 million for only the third time in history.

** ZIOPHARM ONCOLOGY INC (NasdaqCM: ZIOP - news) , $8.6701, -3.07 pct

The cancer drug developer said late on Monday it intends to offer $75 million stock, which represents 8 percent of the company's market capitalization of $918.75 mln as of Monday's close.

** OCWEN FINANCIAL CORP (NYSE: OCN - news) , $6.98, +12.04 pct

Investment manager Kingstown Capital Partners LLC reported a 9.5 percent stake in the mortgage servicer. (http://reut.rs/1oUTX8C)

Kingstown said it bought about 12 million Ocwen shares as of Feb. 2 based on belief that the shares were undervalued.

** SPHERIX INC, $1.02, +9.68 pct

The company, which buys and licenses technology patents, rejected Marathon Patent (NasdaqCM: MARA - news) 's unsolicited acquisition proposal on Jan. 15.

** TRONOX LTD, $22.99, +8.14 pct

** FMC CORP (NYSE: FMC - news) , $59.61, +3.08 pct

Diversified chemical maker Tronox is nearing a deal to buy a soda-ash business from rival FMC for more than $1.5 billion, the Wall Street Journal reported, citing people familiar with the matter.

(Compiled by Avik Das in Bengaluru; Editing by Sriraj Kalluvila and Joyjeet Das)