Today's noteworthy downgrades include: 21st Century Fox (FOXA) downgraded to Hold from Buy at Topeka... Compass Minerals (CMP) downgraded to Neutral from Buy at Monness Crespi... Crown Holdings (CCK) downgraded to Neutral from Buy at Goldman... EMC (EMC) downgraded to Market Perform from Outperform at FBR Capital... Goldcorp (GG) downgraded on guidance misses at RBC Capital... Heritage Oaks (HEOP) downgraded to Market Perform from Outperform at Keefe Bruyette... Ligand (LGND) downgraded to Hold from Buy at Deutsche Bank... Mattress Firm (MFRM) downgraded on materializing headwinds at Wedbush... Micron (MU) downgraded to Underweight on 2016 uncertainty at Morgan Stanley... Repsol (REPYY) downgraded to Reduce from Neutral at Nomura... SanDisk (SNDK) downgraded to Equal Weight from Overweight at Morgan Stanley... Select Comfort (SCSS) downgraded to Neutral from Outperform at Wedbush... Telekom Austria (TKAGY) downgraded to Neutral from Outperform at Exane BNP Paribas... Teradata (TDC) downgraded on valuation, competition worries at JMP Securities... comScore (SCOR) downgraded to Neutral from Buy at Goldman... easyJet (ESYJY) downgraded to Underperform from Outperform at RBC Capital.