Today's noteworthy downgrades include: 21st Century Fox (FOXA) downgraded to Neutral from Overweight at Atlantic Equities... Black Hills (BKH) downgraded to Neutral from Outperform at Credit Suisse... Bona Film (BONA) downgraded to Underperform from Buy at BofA/Merrill... Chesapeake (CHK) downgraded to Neutral from Buy at SunTrust... Copa Holdings (CPA) downgraded to Hold from Buy at Deutsche Bank... Fiserv (FISV) downgraded to Hold from Buy at Argus... Genworth (GNW) downgraded to Underperform from Outperform at Macquarie... Memorial Production (MEMP) downgraded to Outperform from Strong Buy at Raymond James... Navios Maritime Partners (NMM) downgraded to Underperform from Neutral at BofA/Merrill... Noodles & Company (NDLS) downgraded to Underperform from Neutral at BofA/Merrill... Noranda Aluminum (NOR) downgraded to Sell from Neutral at UBS... OraSure (OSUR) downgraded at JMP Securities... Safe Bulkers (SB) downgraded to Underperform from Neutral at BofA/Merrill... Sequenom (SQNM) downgraded to Neutral from Outperform at Wedbush... Sucampo (SCMP) downgraded to Hold from Buy at Cantor... Synageva (GEVA) downgraded to Hold from Buy at Canaccord... TASER (TASR) downgraded to Perform from Outperform at Oppenheimer... Thompson Creek (TC) downgraded to Sell from Neutral at UBS... Town Sports (CLUB) downgraded to In-Line from Outperform at Imperial Capital... Varonis (VRNS) downgraded to Hold from Buy at Needham... Whole Foods (WFM) downgraded to Neutral from Buy at BofA/Merrill... Yanzhou Coal (YZC) downgraded to Underweight from Neutral at JPMorgan... iGATE (IGTE) downgraded to Neutral from Buy at SunTrust.