Greece, China in focus; Nike profit beats, but Micron weighs on chipmakers

Live: China's market tumbled more than 7% overnight, meanwhile, fears over Greece persist. In corporate news, Nike's quarterly earnings topped views, while Micron's outlook spooked traders.

Greece, China in focus; Nike profit beats, but Micron weighs on chipmakers source: http://finance.yahoo.com/news/greece--china-in-focus--nike-profit-beats--lululemon-faces-new-woes-120349167.html