Today's noteworthy downgrades include: Alexion (ALXN) downgraded to Equal Weight from Overweight at Barclays...DRDGOLD (DRD) downgraded to Neutral from Overweight at JPMorgan...Gold Fields (GFI) downgraded to Underweight from Neutral at JPMorgan...H&R Block (HRB) downgraded to Neutral from Buy at BTIG...Harmony Gold (HMY) downgraded to Neutral from Overweight at JPMorgan...Manning & Napier (MN) downgraded to Market Perform from Outperform at Raymond James...Marvell (MRVL) downgraded to Equal Weight from Overweight at Morgan Stanley and to Neutral from Buy at B. Riley...Mattress Firm (MFRM) downgraded to Neutral from Buy at BofA/Merrill...Premiere Global (PGI) downgraded to Outperform from Strong Buy at Raymond James...Randgold (GOLD) downgraded to Neutral from Overweight at JPMorgan...Silver Wheaton (SLW) downgraded to Market Perform from Outperform at BMO Capital...Sirona Dental (SIRO) downgraded to Equal Weight from Overweight at Morgan Stanley...Solera (SLH) downgraded to Neutral from Buy at SunTrust...Spirit Realty (SRC) downgraded to Neutral from Buy at BofA/Merrill...TimkenSteel (TMST) downgraded to Market Perform from Outperform at Cowen.

HSBC analyst Leroy Mnguni raised the firm's price target on Gold Fields to ZAR 236 from ZAR 224 and keeps a Reduce rating on the shares. The firm says the recent results season has left it more concerned regarding the challenges facing the South America gold miners. Harmony's medium-term capex outlook continued to increase while the declining reserves at Gold Fields is concerning, which may escalate the acquisition risk for the stock, the analyst tells investors in a research note. Meanwhile, the HSBC notes reserves have been declining at AngloGold's Australian operations, with reserve life for the region falling to five years.