Benzinga's Top Upgrades, Downgrades For November 27, 2017 By: Benzinga via Benzinga November 27, 2017 at 09:05 AM EST Top Upgrades Bank of America upgraded Ciena Corporation (NYSE: CIEN) from Neutral to Buy. Ciena shares gained 0.67 percent ... Read More >> Related Stocks: Allena Pharmaceuticals Inc Altair Engineering Inc Cl A Arrowhead Pharma Block Inc Caredx Inc Cia DE Saneamento Basico Do Estado ADR Ciena Corp Constellium Ord Shs Cl A Cubic Corp Everest Re Group Evoqua Water Technologies Corp Funko Inc Cl A Gsk Plc ADR Himax Technologies ADR Lowe's Companies Mid-America Apartment Communities National Grid Transco Plc ADR Norfolk Southern Ohr Pharmceutial Solaredge Tech Spero Therapeutics Inc T-Mobile US Western Digital Zogenix Inc