*Wells Fargo stake grows to nearly $17 billion. May 15- Warren Buffett's Berkshire Hathaway Inc on Wednesday revealed a new investment in Chicago Bridge& Iron Co and said it has added to its largest equity holding, Wells Fargo& Co..
*Core U.S. retail sales rise 0.5 percent in April. *Yum Brands falls as monthly Chinese sales drop. NEW YORK, May 13- U.S. stocks were mostly flat on Monday as investors paused following a rally that took indexes to record highs, though a strong read on retail sales limited declines and the Nasdaq ticked up on a rally in Netflix.
*Diamond Offshore Drilling Inc: JP Morgan cuts target price to $83. *National Oilwell Varco Inc: JP Morgan cuts price target to $85 from. *Dresser-Rand Group Inc: JP Morgan cuts target price to $61 from $62;.
April 29- National Oilwell Varco Inc:. For a summary of rating and price target changes on U.S. companies: Reuters Eikon users, click on RCH/US Reuters 3000 Xtra users, double-click RCH/US Reuters Station users, click. 1568.
April 29- National Oilwell Varco Inc:. *Raymond James cuts target price to $85 from $90; rating outperform. Reuters Station users, click. 1568.
April 29- National Oilwell Varco Inc:. *Bernstein cuts target price to $75 from $77; rating market-perform. Reuters Station users, click. 1568.
April 29- National Oilwell Varco Inc:. For a summary of rating and price target changes on U.S. companies: Reuters Eikon users, click on RCH/US Reuters 3000 Xtra users, double-click RCH/US Reuters Station users, click. 1568.
April 29- National Oilwell Varco Inc:. *Susquehanna cuts target price to $76 from $83; rating positive. Reuters Station users, click. 1568.
April 26- National Oilwell Varco Inc:. *RBC cuts price target to $78 from $80; rating sector perform. Reuters Station users, click. 1568.
April 26- National Oilwell Varco Inc:. *Barclays cuts price target to $84 from $93; rating overweight.
April 26- National Oilwell Varco Inc. "We are very cautious about North America and continue to see headwinds here as pricing and volume remain under pressure and as demand for pressure pumping and drilling equipment remains weak and operators defer expenditures," Chief Operating Officer Clay Williams said on a conference call.
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In contrast, drillers such as Nabors Industries Ltd and Patterson-UTI Energy Inc face scrapping many old rigs as there are few buyers for them.