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) 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) 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) 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) 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.