June 4 (Reuters) - Some U.S. stocks to watch on Tuesday:
U.S. stock index futures were little changed on Tuesday as the market paused from gains, but trading was expected to be volatile as several Federal Reserve speakers due to speak may provide clues on how long the Fed intends to maintain stimulus efforts.
S&P 500 futures were flat, Dow Jones industrial average futures fell 6 points while Nasdaq 100 futures added 3.5 points.
** EXACTTARGET INC, Monday close $22.10, up 51.8 pct premarket
** SALESFORCE.COM INC, Monday close $41.04, down 2.8 pct premarket
Web-based software maker Salesforce.com said it would buy marketing software provider ExactTarget for $2.5 billion as it looks to build a marketing platform that will tap the increasing use of mobile devices and social networks.
** ASTRAZENECA , Monday close $51.49
** RIGEL PHARMACEUTICALS, Monday close $4.53, down 24.9 pct premarket
AstraZeneca has decided to end development of fostamatinib, a rheumatoid arthritis pill that was one of its few late-stage experimental medicines, following disappointing overall results.
The decision is a fresh blow to AstraZeneca's already sparse new-drug pipeline and a bigger setback for Rigel, the U.S. biotech firm that struck a licensing deal for fostamatinib with Britain's second-biggest drugmaker in 2010.
** DOLLAR GENERAL CORP, Monday close $53.55, down 4.8 pct premarket
The discount chain cut the top end of its full-year profit forecast, citing moderating sales growth and a lower gross profit rate.
** ARRAY BIOPHARMA INC, Monday close $5.78, down 4.5 pct premarket
The company said on Monday it planned to offer convertible senior notes of about $100 million due 2020 in an underwritten public offering.
** AMERICAN INTERNATIONAL GROUP, Monday close $44.75, up 1.3 pct premarket
The insurer will rejoin the S&P 500 index this week, nearly five years after a Federal bailout, marking a key milestone in its recovery.
** HEIDRICK & STRUGGLES INTERNATIONAL INC, Monday close $17.25, up 2.3 pct premarket
The executive search firm confirmed late on Monday it had been approached with a buyout offer and that its board was exploring strategic alternatives, including a sale.
The Financial Post reported earlier the same day that at least two private equity firms, including that of Blackstone Group, were looking to buy Heidrick & Struggles. (r.reuters.com/pec68t)
** PORTLAND GENERAL ELECTRIC CO, Monday close $30.72, down 2 pct premarket
The power utility company late on Monday said it had signed agreements to construct a natural gas-fired power plant near Boardman and a wind farm in southeastern Washington.
** GENERAL MOTORS CO, Monday close $34.42, up 2.6 pct premarket
General Motors, the biggest foreign automaker by sales in China, aims to boost its exports from the country by nearly 70 percent this year because of strong demand for its Chinese-developed low-cost cars, a local executive said.
S&P Dow Jones Indices said on Monday that General Motors will rejoin the S&P 500 index this week, marking a key milestone in the recovery of two companies.
Jefferies & Co raised its price target on the company's stock to $36 from $31 after the company reported strong demand for its pickup trucks on Monday.
** APPLE INC, Monday close $450.72
Apple conspired with publishers to raise the price of e-books in a scheme costing consumers "hundreds of millions of dollars," a U.S. government lawyer said on Monday.
** MORGANS HOTEL GROUP CO, Monday close $6.67, up 12.4 pct premarket
The company said its slate of director nominees, if reelected, would start a process to explore strategic alternatives including a sale of the company.
** ZYNGA INC, Monday close $2.99
Zynga announced on Monday its biggest ever round of layoffs and warned of weak bookings for the current quarter, raising doubts about the social game developer's attempt at a recovery.
** SAIC INC, Monday close $14.84, down 3 pct after market
The U.S. government IT contractor's quarterly profit fell about 31 percent on Monday as it spent $33 million on separation transactions, and costs related to selling, general and administrative functions also rose.
"The market conditions reinforce the importance of expanding our addressable markets through the planned separation of the company," Chief Executive John Jumpera said.
In August last year, the company said it planned to split into two independently traded companies to bid for more contracts which they couldn't do then due to conflict-of-interest regulations.
** U.S. SILICA HOLDINGS INC, Monday close $21.59, down 3.9 percent premarket
The No. 2 U.S. commercial silica maker said its stockholder GGC USS Holdings LLC, an affiliate of Golden Gate Capital, will sell 10 million U.S. Silica shares in an underwritten offering.
** NEWCASTLE INVESTMENT CORP, Monday close $5.10, up 2 pct after market
The real estate investment company appointed Jonathan Brown as the interim chief financial officer and said it would pay a dividend of 17 cents per common share for the second quarter.
** MICROCHIP TECHNOLOGY INC, Monday close $36.84, up 5 pct premarket
The chipmaker raised its expectations for revenue and adjusted profit for the first quarter. It expects an adjusted profit of 52 to 56 cents per share, above analysts' expectations for 52 cents per share, according to Thomson Reuters I/B/E/S.
It also expects sales to be up between 4 percent and 7 percent compared to the fourth quarter. Brokerage Mizuho Securities raised its price target on the stock to $42 from $40, while JP Morgan raised its price target to $35 from $34.
** CARLYLE GROUP LP, Monday close $29.39
The California Public Employees' Retirement System plans to sell its entire 4 percent stake in Carlyle Group as the U.S. public pension fund plans its exit from the private equity manager after 12 years.
** SMITHFIELD FOODS INC, Monday close $32.98
Continental Grain Co, the largest shareholder in Smithfield Foods, said on Monday it would sell its entire stake in the world's biggest pork producer, preventing an impending proxy battle after China's Shuanghui International Holdings moved in to buy Smithfield in a multi-billion dollar deal.
** NOVAVAX INC, Monday close $1.89
The vaccine developer said it had offered to buy Sweden-based Isconova AB for about $29.6 million.
Novavax said it had made a public tender offer to acquire all Isconova outstanding shares and warrants.
** CHINA SUNERGY CO LTD, Monday close $1.82
The solar cell and module maker said it expected first-quarter gross margin to be at break even, compared to its previous forecast of negative 3-4 percent.
** FORTUNA SILVER MINES INC, Monday close $3.50, up 2 pct after market
Analysts at Canaccord Genuity on Monday added the silver miner's stock to its focus list, saying the company had a strong balance sheet and an improving growth profile with significant upside due to its Trinidad North discovery at San Jose mine in Mexico.
** ELAN CORP , Monday close $12.47
Elan got relief from courts in two countries on Monday that temporarily prevents U.S.-based investment firm Royalty Pharma from going ahead with its $6.4 billion bid for the Irish drug firm.
** SPRINT NEXTEL CORP, Monday close $7.22
** CLEARWIRE CORP, Monday close $4.42
** DISH NETWORK, Monday close $38.64
Sprint Nextel urged Clearwire on Monday to reject Dish Network's rival bid for the wireless service provider, saying that a deal under Dish's terms would be illegal and violate Clearwire's agreement with its shareholders.
** SAP AG , Monday close $74.86, up
The German business software maker said more than 1,500 customers are using its HANA tool, which helps firms analyse large amounts of data, up from over 1,300 customers at the end of the first quarter.
** WALT DISNEY CO, Monday close $63.80
Disney raised single-day admission prices as much as 6.7 percent over the weekend at its theme parks in Florida and California, hikes that are more than five times the rate of inflation.
** NABORS INDUSTRIES LTD, Monday close $16.57
The world's largest land-drilling contractor hosts its annual shareholder meeting. The company may learn whether its shareholders are satisfied with its recent board changes and the way the company is being run, driven by Pamplona Capital Management's purchase of a 9.3 percent stake.
** TESLA MOTORS, Monday close $92.59, up 1.5 pct premarket
The car company led by billionaire Elon Musk hosts its annual meeting about a month after the company posted its first-ever quarterly profit.
** WAL-MART STORES INC, Monday close $75.69
Walmart said on Monday it is offering a money-back guarantee on the fruits and vegetables it sells at its Walmart U.S. stores as it tries to gain more ground in the grocery business.
** LULULEMON ATHLETICA INC , Monday close $79.29
Lululemon's black "Luon" pants are back on store shelves, the Canadian retailer said on Monday, following a highly-publicized recall in March after the fabric was deemed too transparent. (Compiled by Sruthi Ramakrishnan)