NEW YORK (TheStreet) -- RATINGS CHANGES

Arista (ANET) - Get Report was downgraded at Citigroup to neutral from buy. Twelve-month price target is $68. Company has less margin upside potential, Citigroup said.

Church & Dwight (CHD) - Get Report was upgraded at Bank of America/Merrill Lynch to neutral. Twelve-month price target is $85. Company deserves a premium valuation, Bank of America/Merrill Lynch said.

Coupons (COUP) - Get Report was upgraded at Goldman Sachs to neutral from sell. Twelve-month price target is $15. Valuation call, as the stock has lost 41% since last June, Goldman Sachs said.

Express (EXPR) - Get Report was upgraded at Wedbush to outperform from neutral. Twelve-month price target is $17. Company can exceed near-term earnings expectations, Wedbush said.

Iconix (ICON) - Get Report was upgraded at Brean Capital to buy from hold. Twelve-month price target is $42. Recent acquisitions can boost growth, Brean Capital said.

Isis (ISIS) was downgraded at Piper Jaffray to neutral from overweight. Valuation call, based on a 12-month price target of $68.

National Oilwell Varco (NOV) - Get Report was downgraded at Sterne Agee to neutral from buy. Twelve-month price target is $55. Estimates also cut, given macro growth headwinds, Sterne Agee said.

Pentair (PNR) - Get Report was downgraded at Keybanc to hold from buy. Sales momentum will likely be challenged in the coming quarters, Keybanc said.

Stratasys (SSYS) - Get Report was downgraded at Stifel to hold from buy. Company is investing more into future growth, which will weigh on near-term earnings, Stifel said.

Stratasys was downgraded at Morgan Stanley to equal-weight. Twelve-month price target is $53. Company is investing more into future growth, which will hurt margins, Morgan Stanley said.

Waddell & Reed (WDR) - Get Report was downgraded at Sterne Agee to neutral from buy. Twelve-month price target is $51. Fundmental turnaround will likely take time, Sterne Agee said.

Waddell & Reed was downgraded at Citigroup to sell from neutral. Twelve-month price target is $39. Margins appear to have peaked and the company will likely fall short of consensus earnings expectations, Citigroup said.

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This article was written by a staff member of TheStreet.