NEW YORK ( TheStreet) -- CHANGE IN RATINGS TD Ameritrade ( AMTD) downgraded to market perform at BMO Capital Markets based on valuation. The stock has outperformed its sector in 2013 thus far and now trades at notably higher multiples, BMO Capital Markets said. Crocs ( CROX) was downgraded at Wedbush to neutral, because performance projections have been fully priced-in, Wedbush said. Although second-quarter results will likely be in line with management's guidance, the opportunity for near-term reward has contracted, Wedbush said. Cognizant ( CTSH) was upgraded at Goldman Sachs to buy. $90 price target. Immigration risk is fading and the company can deliver solid growth, Goldman said. CVB Financial ( CVBF) was downgraded at FIG Partners to market perform. Valuation call, based on a $14.50 price target, FIG Partners said. Dick's Sporting Goods ( DKS) was upgraded at Morgan Stanley to overweight, based on enhanced fiscal 2014 estimates. DKS has underperformed the consumer discretionary sector despite strong fundamentals and trading at a discount, Morgan Stanley said. DO) was upgraded to buy at TheStreet Ratings. Fairchild Semiconductor ( FCS) was downgraded to hold at TheStreet Ratings. Honeywell ( HON) was downgraded at Nomura to neutral. Valuation call, based on an $88 price target, Nomura said. H&R Block ( HRB) was downgraded at BTIG to neutral from buy. Valuation call, as the stock exceeded the previous $31 price target, BTIG said. Juniper ( JNPR) was downgraded at Jefferies to hold from buy. Valuation call, based on a $21.25 price target, Jefferies said. NOK) was downgraded at Oppenheimer to underperform from perform. Smartphone competition appears to be reaccelerating, Oppenheimer said. North Star Realty ( NRF) was initiated with a buy rating at UBS. $13 price target. The company will benefit as securitization markets and commercial loan demand improve, UBS said. Onyx Pharmaceuticals ( ONXX) was downgraded at Deutsche Bank to hold from buy. $140 price target. Company is likely to be acquired, but expect limited upside potential from current levels, Deutsche said. Sonoco ( SON) was upgraded at Bank of America/Merrill Lynch to buy from neutral. $42 price target. Several parts of the business appear to be turning around, BofA/Merrill said.