July 30 (Reuters) - Some U.S. stocks to watch on Tuesday:
U.S. stock index futures edged higher on Tuesday, following stocks' slight decline on Monday, as investors braced for housing and consumer data in a week packed with economic numbers. S&P 500 futures rose 4.3 points, Dow Jones industrial average futures rose 29 points, and Nasdaq 100 futures added 11 points.
** MOSAIC CO, Monday close $52.96, down 15 pct premarket
** POTASH CORP, Monday close $37.90, down 13 pct premarket
** CF INDUSTRIES HOLDINGS INC, Monday close $202.3, down 4 pct premarket
** AGRIUM INC, Monday close $91.43, down 14 pct premarket
Global potash prices are expected to fall by 25 percent after Russia's Uralkali dismantled one of the world's largest potash partnerships by pulling out of a venture with Belarus Potash Co.
Uralkali said the decision might lead to a fall in global potash price to below $300 per ton in the second half of 2013 from $400 per ton now.
Mosaic is a U.S. fertilizer producer while CF Industries is the world's second-largest maker of nitrogen fertilizer.
** STEREOTAXIS INC, Monday close $1.78, up 45.5 pct after market
The device maker said late on Monday it had received U.S. Food and Drug Administration's approval to market a robotically manipulated catheter used in surgery. The device is already being marketed in Europe since 2011.
** ORTHOFIX INTERNATIONAL N.V., Monday close $27.40, down 11 pct after market
The medical device maker delayed the release of its quarterly results as its audit committee needs additional time to review matters related to revenue recognition for prior periods.
The company does not expect to file the report for the quarter ended June 30 by the Aug. 9 deadline.
** NATIONAL INSTRUMENTS CORP, Monday close $30.52, down 10 pct after market
The company, which provides software and equipment for industrial automation and testing, reported lower-than-expected second-quarter revenue and forecast current-quarter results below analysts' estimates, citing weak industry conditions.
** PEREGRINE SEMICONDUCTOR CORP, Monday close $9.60, up 9 pct after market
The radio frequency chipmaker reported a surprise second-quarter adjusted profit because of a 20 percent rise in revenue.
** ARRAY BIOPHARMA INC, Monday close $6.26, up 9 pct premarket
The biopharmaceutical company entered a collaboration with biotechnology firm Celgene Corp to develop Array's inflammation treatment, for an upfront payment of $11 million.
Array is also entitled to milestone payments of up to $376 million and royalties on net sales of all drugs. The agreement gives Celgene an exclusive option to license multiple drug candidates.
** GOODYEAR TIRE & RUBBER CO, Monday close $17.04, up 9 pct premarket
The No. 1 U.S. tire maker reported a higher quarterly profit, helped by low raw material prices and an increase in tire sales volumes outside North America.
** HERBALIFE LTD, Monday close $60.57, up 7 pct premarket
The nutritional products giant said its better-than-expected earnings and rosy 2013 outlook were driven by a fast-growing global distributor network and strong demand for its weight-loss shakes and supplements.
** ALCATEL-LUCENT, Monday close $2.20, up 5.5 pct premarket
Struggling telecom equipment maker surfed on strong growth in its key U.S. market to beat analysts' estimates and said mobile chip maker Qualcomm would buy a minority stake as part of a research partnership.
** CORNING INC, Monday close $15.39, up 3 pct premarket
The maker of Gorilla Glass reported a 4 percent increase in quarterly revenue as demand rose for the scratch-resistant glass used in smartphones and tablets.
** OCCIDENTAL PETROLEUM CORP, Monday close $90.48, up 2 pct premarket
The company posted a 3 percent rise in revenue as the fourth-largest U.S. oil company gained from higher oil and gas prices and increased output.
** SPRINT CORP, Monday close $4.74, down 2 pct premarket
The No. 3 U.S. mobile service provider posted a wider quarterly loss due to hefty costs from shutting down its older Nextel network, although revenue grew as its customers spent more on wireless services.
** NATIONAL OILWELL VARCO INC, Monday close $71.14, up 2.6 pct premarket
The largest U.S. oilfield equipment provider reported a 12 percent fall in second-quarter profit as margins remained under pressure in the North American land-drilling market.
** PFIZER INC, Monday close $29.54, up 1 pct after market
Pfizer reported second-quarter earnings slightly ahead of forecasts on Tuesday as the United States' largest drugmaker lines up a business split that could lead to the spin-off of its generics division.
** SPIRIT AIRLINES INC, Monday close $35.39, down 4.5 pct after market
The airline company said on Monday Chairman William Franke plans to resign in August as funds affiliated with private equity firm Indigo Partners LLC divest their holding of roughly 12.07 million shares of Spirit Airlines' common stock.
** GIGAMON INC, Monday close $31.62, up 8 pct after market
The maker of traffic management software reported better-than-expected second-quarter results on Monday due to higher revenue.
The company went public last month.
* RR DONNELLEY & SONS CO, Monday close $16.25, up 4 pct after market
The printing services company reported better-than-expected results for the second quarter on Monday due to volume growth in the U.S. print business.
** AMKOR TECHNOLOGY INC, Monday close $4.41, down 3.6 pct after market
The company, which provides packaging and test services to semiconductor companies, reported lower-than-expected second-quarter revenue and also forecast current-quarter revenue below Wall Street estimates. The company said that its customers are adjusting their inventory level due to a slowdown in demand for smartphones.
** CAESARS ENTERTAINMENT CORP, Monday close $15.58, down 2 pct after market
The casino operator reported lower-than-expected quarterly results, hurt by a drop in overall visitations due to higher competition in its Atlantic City and other casinos outside of Las Vegas. "Revenues in the second quarter dropped most significantly in Atlantic City due to continued competitive pressure in the region," the company said in a statement.
** MERCK & CO INC, Monday close $48.34, up 0.6 pct after market
The second-biggest U.S. drugmaker, is expected to report sharply lower second-quarter earnings, hurt by cheaper generic forms of its Singulair asthma medicine. A handful of the company's important experimental drugs have been hit with setbacks in the past year, so investors will want reassurance that the company's drug pipeline can get back on track and help Merck rebound from its Singulair patent cliff.
** AETNA INC, Monday close $63.41, up 0.5 pct after market
The U.S. health insurer on Tuesday reported higher-than-expected second-quarter earnings as medical costs remained low and it closed on its acquisition of Coventry Health Care.
** L&L ENERGY INC, Monday close $3.36
The coal miner reported a 169 percent increase in its full-year profit due to higher production after the acquisition of two mines in China. The company, which now owns three mines in Guizhou in China, expects to produce 1.2 million tons coal in the region by 2015.
** DISCOVERY COMMUNICATIONS INC, Monday close $76.87
The company reports second-quarter results. Investors want some color from Discovery's management on upfront advertising price and ratings trends that could impact advertising in the second half of the year.
** COACH INC, Monday close $57.85, up 0.4 pct after market
The leather goods maker and retailer reports fourth-quarter results with all eyes on whether it has managed to keep up its momentum in North America last quarter against strong competitors like kate spade and Michael Kors, and on trends in China, still a small market for the New York company.
** OFFICE DEPOT INC, Monday close $4.27, up 1 pct after market
When Office Depot reports its results for the second quarter, investors in the second-largest U.S. office supply retailer will get an update on the progress of its proposed merger with smaller rival OfficeMax Inc. The two companies still await regulatory approval for the deal. Office Depot, which is expected to report a quarterly loss and a drop in sales, could also comment on how the back-to-school season is shaping up.
** NYSE EURONEXT, Monday close $41.42
The company is expected to report higher quarterly earnings, helped by an increase in trading activity, higher technology service revenues, and lower operating costs. The transatlantic exchange operator is being bought by Intercontinentalexchange for $8.2 billion.
** WESTERN UNION CO, Monday close $16.98
The world's largest money-transfer company reported a 27 percent fall in second-quarter profit as revenue from its consumer business fell and expenses rose.
Compiled by Rohit T.K. in Bangalore; Editing by Sreejiraj Eluvangal