RATINGS CHANGES

Deckers (DECK) was downgraded to neutral at Citigroup. $53 price target. The company is seeing further wholesale decline, Citi said.

Express (EXPR - Get Report) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: EXPR.

Ionis Pharmaceuticals (IONS - Get Report) was downgraded to market perform from outperform at BMO Capital. $26 price target. Trial delay reduced sales projections and probability of success, BMO said.

NuVasive (NUVA - Get Report) was upgraded to overweight from equal weight at Barclays. $58 price target. Business is performing well and Ellipse can accelerate growth, Barclays said. 

Palo Alto Networks (PANW - Get Report) was downgraded to hold from buy at Deutsche Bank. $150 price target. Product revenue growth is decelerating, Deutsche said.

Piper Jaffray (PJC - Get Report) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: PJC.

Sanderson Farms (SAFM - Get Report) was downgraded to neutral from overweight at JPMorgan. $95 price target. The valuation is less attractive after rallying 23% since January, JPMorgan said.

Signet Jewelers (SIG - Get Report) was downgraded to neutral from buy at Goldman Sachs. $119 price target. The company was also removed from the Conviction Buy list, as comp-store sales growth is slowing, Goldman said.

Synergy Resources (SYRG) was upgraded to buy from hold at Cantor Fitzgerald. $7.50 price target. Earnings estimates were also increased, given its high-graded footprint in the Wattenberg Fairway, Cantor said.

Workday (WDAY - Get Report) was downgraded to underperform from neutral at Wedbush. $63 price target. Implementation pipelines appear thinner, Wedbush said.

This article was written by a staff member of TheStreet.