Today's noteworthy upgrades include: Bank of America (BAC) upgraded to Outperform from Market Perform at Keefe Bruyette... Bristol-Myers (BMY) upgraded to Neutral from Underweight at Piper Jaffray... Chevron (CVX) upgraded to Neutral from Underperform at BofA/Merrill... Abercrombie & Fitch (ANF) upgraded to Overweight from Neutral... Nike (NKE) upgraded to Outperform from Market Perform at Telsey Advisory... DreamWorks (DWA) upgraded to Buy from Neutral at B. Riley... Caesarstone (CSTE) upgraded to Overweight from Equal Weight at Barclays... TransAlta (TAC) upgraded to Outperform from Market Perform at BMO Capital... Sarepta (SRPT) upgraded to Overweight from Neutral at Piper Jaffray... AutoZone (AZO) upgraded to Buy from Neutral at BofA/Merrill... Royal Dutch Shell (RDS.A) upgraded to Buy from Hold at Jefferies... Allscripts (MDRX) upgraded to Buy from Hold at Argus... China Unicom (CHU) upgraded to Buy from Hold at Jefferies... Ross Stores (ROST) upgraded to Buy from Neutral at Buckingham.