Today's noteworthy downgrades include: Chesapeake (CHK) downgraded at Sterne Agee... Dana Holding (DAN) downgraded to Equal Weight from Overweight at Barclays... Depomed (DEPO) downgraded to Neutral at Janney Capital... Fiat Chrysler (FCAU) downgraded to Neutral from Buy at UBS... Gazprom (OGZPY) downgraded to Hold from Buy at Deutsche Bank... Meritor (MTOR) downgraded to Equal Weight from Overweight at Barclays... Quality Systems (QSII) downgraded to Neutral from Outperform at RW Baird... Sanchez Energy (SEN) downgraded to Neutral from Buy at Sterne Agee... Southwestern Energy (SWN) downgraded to Neutral from Buy at Sterne Agee... Vitesse (VTSS) downgraded to Hold from Buy at Craig-Hallum... Williams-Sonoma (WSM) downgraded to Hold from Buy at BB&T... eBay (EBAY) downgraded to Underweight from Neutral at Piper Jaffray.