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Martin Marietta Falls Most Since 2008 After Einhorn Comments

Martin Marietta Materials Inc. plunged the most in three years, triggering a halt in trading, after Greenlight Capital Inc. Chairman David Einhorn questioned future profits at the sand-and-gravel producer.

“Recent earnings benefited from one-time fiscal stimulus that is about to wind down,” Einhorn, 43, said at a conference in New York. He cited “problems” at the Raleigh, North Carolina-based company after a court ruling forced it to withdraw a hostile bid for larger rival Vulcan Materials Co.