
Delek US Holdings Inc. (NYSE: DK) was started as Buy at Bank of America Merrill Lynch.
Dollar General Corp. (NYSE: DG) was downgraded to Hold from Buy at Deutsche Bank.
DreamWorks Animation SKG Inc. (NASDAQ: DWA) was raised to Hold from Sell at Topeka.
FormFactor Inc. (NASDAQ: FORM) was raised to Buy from Neutral at B. Riley.
Live Nation Entertainment Inc. (NYSE: LYV) was downgraded to Neutral from Buy at Sterne Agee.
Lowe’s Companies Inc. (NYSE: LOW) was downgraded to Sell from Hold and the price target was cut to $37 from $47 at Canaccord Genuity.
Nautilus Inc. (NYSE: NLS) was downgraded to Neutral from Buy B. Riley.
Twitter Inc. (NYSE: TWTR) was raised to Buy from Neutral at Nomura, and the price target was set at $43.
Veeva Systems Inc. (NYSE: VEEV) was started as Overweight by J.P. Morgan.
Williams-Sonoma Inc. (NYSE: WSM) was raised to Overweight from Neutral at Piper Jaffray.