Research Analysts’ downgrades for Wednesday, December 13th:

Ameren (NYSE:AEE) was downgraded by analysts at Morgan Stanley from an equal weight rating to an underweight rating.

Accuray (NASDAQ:ARAY) was downgraded by analysts at J P Morgan Chase & Co from a neutral rating to an underweight rating.

ArcBest (NASDAQ:ARCB) was downgraded by analysts at Stifel Nicolaus from a hold rating to a sell rating. Stifel Nicolaus currently has $32.00 price target on the stock, up from their previous price target of $27.00.

Accelerate Diagnostics (NASDAQ:AXDX) was downgraded by analysts at BTIG Research from a buy rating to a neutral rating. They noted that the move was a valuation call. The analysts noted that the move was a valuation call.

bluebird bio (NASDAQ:BLUE) was downgraded by analysts at Maxim Group from a buy rating to a hold rating. The firm currently has $200.00 target price on the stock.

Choice Hotels International (NYSE:CHH) was downgraded by analysts at J P Morgan Chase & Co from a neutral rating to an underweight rating.

Dialog Semicon (OTCMKTS:DLGNF) was downgraded by analysts at J P Morgan Chase & Co from an overweight rating to a neutral rating.

Genomic Health (NASDAQ:GHDX) was downgraded by analysts at J P Morgan Chase & Co from a neutral rating to an underweight rating.

Hersha Hospitality Trust (NYSE:HT) was downgraded by analysts at Barclays PLC from an equal weight rating to an underweight rating.

Interpublic Group of Companies (NYSE:IPG) was downgraded by analysts at Jefferies Group LLC from a buy rating to a hold rating.

Oasis Petroleum (NYSE:OAS) was downgraded by analysts at Guggenheim from a buy rating to a neutral rating.

Rio Tinto (NYSE:RIO) was downgraded by analysts at Zacks Investment Research from a buy rating to a hold rating. According to Zacks, “Rio Tinto PLC is an international mining company. The Company has interests in mining for aluminum, borax, coal, copper, gold, iron ore, lead, silver, tin, uranium, zinc, titanium, dioxide feedstock, diamonds, talc and zircon. RTZ’s various mining operations are located in New Zealand, Australia, South Africa, Europe and Canada. “

Ralph Lauren (NYSE:RL) was downgraded by analysts at Bank of America Corp from a neutral rating to an underperform rating.

Science Applications International (NYSE:SAIC) was downgraded by analysts at Zacks Investment Research from a buy rating to a hold rating. According to Zacks, “Science Applications International Corp. is engaged in transaction, technical, engineering and enterprise IT services business. The Company provides services in two segments: government segment and commercial segment. Its government segment servers primarily to United States federal, state and local government agencies and foreign governments. The commercial segment provides technology-driven consulting and systems integration services and solutions. Science Applications International Corp. is headquartered in McLean, VA. “

SecureWorks (NASDAQ:SCWX) was downgraded by analysts at Zacks Investment Research from a buy rating to a hold rating. According to Zacks, “SecureWorks Corp. offers intelligence-driven information security solutions focused on protecting from cyber-attacks. The Company’s solutions enable organizations to fortify their cyber defenses to prevent security breaches; detect malicious activity in real time; prioritize and respond rapidly to security breaches and predict emerging threats. Its integrated suite of solutions include managed security, threat intelligence, security and risk consulting as well as incident response. SecureWorks Corp. is based in Atlanta, Georgia. “

Select Medical (NYSE:SEM) was downgraded by analysts at Zacks Investment Research from a hold rating to a sell rating. According to Zacks, “Select Medical Holdings Corporation, through its subsidiaries, operates specialty hospitals and outpatient rehabilitation clinics. The company’s Specialty Hospital segment offers long-term acute care hospital services and inpatient acute rehabilitative hospital care services. Its Outpatient Rehabilitation segment operates clinics and provides physical, occupational, and speech rehabilitation services. The company also provides medical rehabilitation services on a contract basis to nursing homes, hospitals, assisted living and senior care centers, schools, and work sites. The Mission of Select Medical Corporation is to ensure high-quality health care and cost-effective outcomes by providing specialty inpatient long-term acute care and rehabilitation, and outpatient rehabilitation services. The company is headquartered in Mechanicsburg, Pennsylvania. “

AB SKF (OTCMKTS:SKFRY) was downgraded by analysts at Zacks Investment Research from a hold rating to a sell rating. According to Zacks, “SKF AB engages in the manufacturing of ball and roller bearings, seals, tools for mounting/dismounting bearings, lubricants and measuring/monitoring instruments. It also produces roller bearing steel and other special steels. The Company operates in three divisions: Industrial Division, Service Division and Automotive Division. It also offers products and knowledge-based services comprising hardware and software, consulting, mechanical services, predictive and preventive maintenance, condition monitoring, decision-support systems and performance-based contracts. SKF AB is headquartered in Gothenburg, Sweden. “

Sky Solar (NASDAQ:SKYS) was downgraded by analysts at Zacks Investment Research from a strong-buy rating to a hold rating. According to Zacks, “Sky Solar Holdings, Ltd. is a global independent power producer. It develops, owns and operates solar parks. The Company is focused on the downstream solar market and has developed projects in Asia, South America, Europe, North America and Africa. It also sells solar energy systems, including pipelines to utility companies, independent power developers and producers, commercial and industrial companies, and other solar energy system owners. The Company is involved in the engineering design; construction contracting and management; and procurement of PV modules, balance-of-system components, and other components, as well as building and transferring solar parks. Sky Solar Holdings, Ltd. is based in Central, Hong Kong. “

TiVo (NASDAQ:TIVO) was downgraded by analysts at B. Riley from a buy rating to a neutral rating. They currently have $18.00 target price on the stock, down from their previous target price of $24.00.

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