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May 6 (Reuters) - Some U.S. stocks on the move on Monday:
U.S. stocks were little changed at the open as investors paused after stocks hit record highs last week, with the S&P 500 up more than 13 percent so far this year. The Dow Jones industrial average was down 12.51 points, the Standard & Poor's 500 Index was down 0.01 point and the Nasdaq Composite Index was up 3.47 points.
** BMC SOFTWARE INC, $45.28, up 0.28 pct (0957 ET)
The business software maker said it agreed to be acquired by a private equity group led by Bain Capital and Golden Gate Capital Corp for about $6.9 billion.
** ARKANSAS BEST CORP, $13.51, up 28 pct (0946 ET)
The trucking company's ABF Freight System unit reached a tentative five-year labor contract with its Teamsters employee union, Arkansas Best said in a regulatory filing late on Friday. (link.reuters.com/veh87t)
** CRESTWOOD MIDSTREAM PARTNERS LP, $25.44, up 6.7 pct (0953 ET)
** INERGY LP, $23.42, up 6.4 pct (0954 ET)
Crestwood and Inergy agreed to merge in a cash and stock deal to tap demand for pipeline and storage services in North America's fast-developing shale fields.
** GOOGLE INC, $851.58, up 0.69 pct (0936 ET)
** APPLE INC, $457.01, up 1.56 pct (0934 ET)
The European Commission said it believed Motorola Mobility, a unit of Google, was abusing its market position by seeking and enforcing an injunction against Apple in Germany over patents essential to mobile phone standards.
** TYSON FOODS INC, $23.68, down 5 pct (0938 ET)
The largest U.S. meat processor reported a weaker-than-expected quarterly profit as shoppers and restaurants switched to cheaper chicken from beef, and the company cut its full-year sales forecast.
** CLIFFS NATURAL RESOURCES INC, $20.81, up 4.52 pct (0939 ET)
FBR Capital Markets raised its rating on the U.S. iron ore and steel making coal miner's stock to "outperform" from "market perform," citing the company's "ability" to withstand weak iron ore prices and higher domestic supply.
** NIELSEN HOLDINGS N.V., $36.26, up 1.73 pct (0942 ET)
Canadian private equity firm Onex Corp said it would buy market research company Nielsen's expositions business for $950 million in cash.
The wireless service provider sent a letter to shareholders saying the proposed transaction with majority owner Sprint Nextel Corp provides the "best strategic alternative" for Clearwire's minority stockholders.
** YRC WORLDWIDE INC, $13.95, up 27 pct (0953 ET)
BB&T Capital Markets upgraded the trucking company's stock to "hold" from "underweight," saying YRC has made progress towards improving profitability over the last 18 months.
** APOLLO GLOBAL MANAGEMENT LLC, $27.50, up 3.42 pct (0944 ET)
Billionaire Leon Black's alternative asset manager reported a 72 percent increase in first-quarter profit per share, easily beating expectations as it took advantage of favorable capital market conditions to exit investments.
** TESLA MOTORS INC, $56.00, up 2.6 pct (0947 ET)
The automaker, led by billionaire Elon Musk, overhauled financing strategy for the Model S electric sedan in response to criticism that its initial plan last month overstated the potential cost savings.
** GUIDANCE SOFTWARE INC, $8.54, down 3 pct (0947 ET)
Brokerage Raymond James cuts its price target on the digital software maker's stock to $10 from $12.
** WESTLAKE CHEMICAL CORP, $85.90, up 4 pct (0957 ET)
The chemicals maker reported a 40 percent increase in first-quarter profit, mainly due to higher pricing and better margins, which were boosted by cheap natural gas-derived feedstock.
** MOBILE MINI INC, $31.97, up 10 pct (1005 ET)
The company, which makes portable storage products, reported better-than-expected first-quarter results on higher revenue from its leasing business. (Reporting by Sruthi Ramakrishnan in Bangalore; Editing by Maju Samuel)