NEW YORK ( TheStreet) -- CHANGE IN RATINGS:Abbott Laboratories ( ABT) was downgraded to hold at TheStreet Ratings. Amgen ( AMGN) was downgraded at Credit Suisse from outperform to neutral. $90 price target. Stock is already pricing in lower agency costs, Credit Suisse said. Allegheny Technologies ( ATI) was downgraded at J.P. Morgan from neutral to underweight. Estimates were also cut, given risks in the stainless steel market, J.P. Morgan said. Biomarin ( BMRN) was upgraded at Stifel Nicolaus from hold to buy. $67 price target. New products should drive growth and the company is a potential acquisition target, Stifel Nicolaus said. Diamond Offshore ( DO) was downgraded at Credit Suisse from outperform to neutral, Credit Suisse said. $77 price target. Company will be impacted by bifurcation in the deepwater market, Credit Suisse said. FirstEnergy ( FE) was downgraded at Jefferies to underperform from hold. $33.50 price target. Rating agency pressure, Jefferies said. F5 Networks ( FFIV) was downgraded at Needham from buy to hold. Consensus estimates appear high as growth could slow as the company transitions its product line, Needham said. Fortinet ( FTNT) was downgraded at JMP Securities from outperform to market perform. Estimates were also cut, as the company is facing increased competition, JMP said. John Bean Technologies ( JBT) was upgraded to buy at TheStreet Ratings. Johnson Controls ( JCI) was downgraded at Lazard Capital Markets to neutral. Company faces macro growth headwinds, Lazard Capital Markets said. LinkedIn ( LNKD) was initiated with a neutral rating at Sterne Agee. Valuation call, as the stock is up 67% of the past year, Sterne Agee. Och-Ziff ( OZM) was downgraded to market perform at Keefe, Bruyette & Woods. $10.25 price target. Company faces potential growth headwinds, Keefe, Bruyette & Woods said. Precision Castparts ( PCP) was upgraded at UBS to buy from neutral. $213 price target. Negative EPS revisions at end, UBS said. State Street ( STT) was upgraded at J.P. Morgan to neutral. Company is cutting costs, offsetting a lower net interest margin, J.P. Morgan said. Wesco ( WCC) was upgraded at Credit Suisse from neutral to outperform. $84 price target. Company is leveraged to a turn in the commercial construction market, Credit Suisse said. VCA Antech ( WOOF) was downgraded at Stifel Nicolaus from hold to sell. Company may continue to lose market share in the lab business, Stifel Nicolaus said.