Advanced Micro (AMD, news: 8.15 -9.34%) downgraded to Sell from Hold at Auriga… Apache Corp. (APA, news: 103.41 -1.57%) initiated as Sector Underperform at Scotia… Applied Materials (AMAT, news: 13.24 -2.50%) downgraded to Hold from Buy at Citigroup… Basic Energy (BAS, news: 11.03 +4.55%) upgraded to Buy from Hold at Deutsche Bank… Becton Dickinson (BDX, news: 76.28 +0.17%) downgraded [...]