UPGRADES:
* Calpine (CPN) to overweight: Barclays
* Cenovus Energy (CVE) to overweight: Barclays
* Frontline (FRO) to market perform: Wells Fargo
* Pandora Media (P) to buy: Canaccord Genuity
* Pandora Media (P) to buy: SunTrust Robinson
* World Wrestling Entertainment (WWE) to buy: Roth Capital
* WPX Energy (WPX) to overweight: Barclays
DOWNGRADES:
* Angie’s List (ANGI) to hold: Canaccord Genuity
* Cadence Pharmaceuticals (CADX) to market perform: Leerink Swann
* Ericsson (ERIC) to underperform: Credit Suisse
* Frontline (FRO) to sell: Carnegie
* Louisiana-Pacific (LPX) to hold: Deutsche Bank
* Nexen (NXY) to equalweight: Barclays
* Yingli Green Energy (YGE) to sell: ThinkEquity
INITIATIONS:
* Alliance Data Systems (ADS) neutral: Citigroup
* Cephid (CPHD) hold: Cantor
* Equifax (EFX) hold: Deutsche Bank
* Geron (GERN) buy: Stifel Nicolaus
* Magnum Hunter (MHR) neutral: Goldman Sachs
* Natural Resource Partners (NRP) hold: Dahlman Rose
* Oncolytics Biotech (ONCY) buy: Stifel Nicolaus
* Progenics Pharma (PGNX) hold: Stifel Nicolaus
* QR Energy (QRE) overweight: JPMorgan
* Synta Pharma (SNTA) hold: Stifel Nicolaus
* Vertex (VRTX) buy: ThinkEquity