BUZZ-U.S. STOCKS ON THE MOVE-Chubb, Xenon Pharma, Ballard Power

(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 opened sharply higher on Wednesday after Greek Prime Minister Alexis Tsipras said he was prepared to accept most of creditors' bailout terms with some modifications. The Dow Jones industrial average was up 0.93 percent at 17,783.76, the S&P 500 was up 0.80 percent at 2,079.53 and the Nasdaq Composite was up 0.93 percent at 5,033.168.

** CHUBB CORP, $127.26, +33.76 pct

** ACE LTD, $109.92, +8.10 pct

Property and casualty insurer ACE said it would buy smaller rival Chubb for $28.3 billion to diversify its portfolio and reduce exposure to rock-bottom catastrophe insurance rates.

The deal is at a premium of 30 percent to Tuesday's closing price for Chubb stock, based on the offer price of about $124.13 per share.

** BIOCEPT INC (NasdaqCM: BIOC - news) , $2.9388, +15.25 pct

The medical test maker launched a new blood test that could identify patients who would respond to breast and lung cancer treatments.

** CONSTELLATION BRANDS INC (NYSE: STZ - news) , $119.225, +2.76 pct

The company reported a better-than-expected quarterly profit, helped by higher sales of its Corona and Modelo beers, and said it would buy the Meiomi wine brand for about $315 million.

** TETRALOGIC PHARMACEUTICALS CORP, $3.49, +49.15 pct

The drug developer said patients given its experimental drug birinapant in combination with azacitidine showed complete response to treatment in mid-stage study.

** GENERAL MILLS INC (NYSE: GIS - news) , $54.81, -1.63 pct

The maker of Cheerios cereal and Betty Crocker cake mixes said fourth-quarter profit halved as it recorded a $260 million charge to write down the value of one of its frozen and canned vegetable businesses.

** XENON PHARMACEUTICALS INC (NasdaqGM: XENE - news) , $8.8933, -22.87 pct

The drug developer said two strengths of its experimental ointment for pain did not significantly reduce pain in patients suffering from osteoarthritis.

** BALLARD POWER SYSTEMS INC (Toronto: BLD.TO - news) , $1.6899, -19.14 pct

The Canadian fuel cell products maker announced an offering of 8.1 million of its U.S.-listed shares at $1.60 per share, a 23.5 percent discount to the stock's Tuesday close.

The offering size represents 6 percent of the company's outstanding shares as of May 13, according to Thomson Reuters data.

** PATTERSON COS INC, $49.2, +1.13 pct

The company said it would sell its business that makes products to help patients' recover to private equity firm Madison Dearborn Partners for $715 million.

** VALLEY NATIONAL BANCORP (Other OTC: VLNBP - news) , $10.42, +1.07 pct

JP Morgan raised its rating on the bank's stock to "neutral", according to Theflyonthewall.com.

** AXCELIS TECHNOLOGIES INC (NasdaqGS: ACLS - news) , $3.0786, +4.01 pct

Benchmark Co started coverage of the company's stock with a "buy" rating. Analyst Mark Miller expects the company to post a profit this year and the next after three straight years of losses.

** MELCO CROWN ENTERTAINMENT, $20.68, +5.35 pct

** LAS VEGAS SANDS (Xetra: A0B8S2 - news) , $54.52, +3.71 pct

** WYNN RESORTS LTD (NasdaqGS: WYNN - news) , $104.77, +6.18 pct

Casino stocks rose for a second straight day following a better-than-expected showing for monthly gaming revenue in Macau.

Macau's gaming revenue dropped slightly less than the 39-40 percent analysts had forecast though it still suffered its 12th straight monthly decline.

** GREENBRIER CO INC, $48.34, +3.18 pct

The company's third-quarter profit missed estimates for the first time in five quarters. Quarterly sales growth also fell short of market estimates, partly due to an abrupt decline in scrap metal prices.

** GENERAL ELECTRIC CO, $26.71, +0.53 pct

The head of General Electric's finance unit said Tuesday he expects the pace of GE Capital asset sales will accelerate in the third quarter as the U.S. conglomerate eyes unloading an even bigger chunk of assets.

"We're going to pick up the pace in the third quarter," GE Capital Chief Executive Keith Sherin told Reuters in an interview.

** AT&T INC (Sao Paolo: ATTB34.SA - news) , $35.58, +0.17 pct

** DIRECTV (NasdaqGS: DTV - news) , $93.65, +0.93 pct

AT&T's proposed $48.5 billion acquisition of DirecTV is expected to get U.S. regulatory approval as soon as next week, according to people familiar with the matter, a decision that will combine the country's No. 2 wireless carrier with the largest satellite-TV provider.

** NIKE INC (Sao Paolo: NIKE34.SA - news) , $109.22, +1.11 pct

The world's largest sports shoe company said Chairman and co-founder Phil Knight would step down next year.

Knight recommended that Chief Executive Mark Parker succeeds him as chairman. Parker has been CEO since 2006.

** AMAZON.COM INC, $439.04, +1.14 pct

Amazon launched its one-hour delivery service, Prime Now, for select areas of London on Tuesday and said it would expand the program to additional cities in the United Kingdom by the end of the year.

For a fee of 6.99 pounds, Amazon Prime members can have orders worth 20 pounds ($31.43) or more delivered in one hour, the company said on its UK website on Tuesday.

** AMYRIS INC (NasdaqGS: AMRS - news) , $1.9, -2.56 pct

The renewable chemicals and fuels company said on Tuesday it had reached a deal with Total SA (Paris: FR0000120271 - news) . Total (Swiss: FP.SW - news) will own 75 percent of the JV after the restructuring.

** KANDI TECHNOLOGIES GROUP INC, $9.1299, +0.99 pct

The Chinese electric vehicle maker said its joint venture, Kandi Electric Vehicles Group Co Ltd, received a Chinese government subsidy payment of 271.1 mln yuan ($43.7 mln). Kandi said it received the payment for "pure electric vehicle" sales in the second half of 2014. Kandi Electric Vehicles is a 50-50 joint venture between Kandi and Chinese automaker Geely Automobile Holdings Ltd. ($1 = 6.20 yuan)

** MARTEN TRANSPORT LTD (NasdaqGS: MRTN - news) , $22.2, +2.30 pct

The trucking company will replace restaurant chain operator Cracker Barrel Old Country Store Inc (NasdaqGS: CBRL - news) in the S&P SmallCap 600 index after close of trading on July 1. Cracker Barrel will replace Dresser-Rand Group Inc in the S&P MidCap 400 index. Germany's Siemens AG has agreed to buy U.S. oilfield equipment maker Dresser-Rand for $7.6 bln.

** BANCO SANTANDER SA, $7.1, +1.28 pct

The Spanish bank and British mobile banking software provider Monitise (LSE: MONI.L - news) have formed a joint venture to invest in financial technology businesses, they said on Wednesday. (Compiled By Manya Venkatesh in Bengaluru; Editing by Simon Jennings)