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Equifax Inc. operates as a data, analytics, and technology company. The company operates through three segments: Workforce Solutions, U.S. Information Solutions (USIS), and International. The Workforce Solutions segment offers services that enables customers to verify income, employment, educational history, criminal justice data, healthcare professional licensure, and sanctions of people in the United States; and employer customers with services that assist them in complying with and automating payroll-related and human resource management processes throughout the entire cycle of the employment relationship. The USIS segment provides consumer and commercial information services, such as credit information and credit scoring, credit modeling and portfolio analytics, locate, fraud detection and prevention, identity verification, and other consulting services; mortgage services; financial marketing services; identity management services; and credit monitoring products. The International segment offers information service products, which include consumer and commercial services, such as credit and financial information, and credit scoring and modeling; and credit and other marketing products and services, as well as offers information, technology, and other services to support debt collections and recovery management. The company serves customers in financial services, mortgage, retail, telecommunications, utilities, automotive, brokerage, healthcare, and insurance industries, as well as government agencies. It operates in Argentina, Australia, Brazil, Canada, Chile, Costa Rica, Dominican Republic, Ecuador, El Salvador, Honduras, India, Ireland, Mexico, New Zealand, Paraguay, Peru, Portugal, Spain, the United Kingdom, Uruguay, and the United States. The company was founded in 1899 and is headquartered in Atlanta, Georgia.

Mechel PAO, together with its subsidiaries, engages in mining, steel, and power businesses in Russia, Asia, Europe, the Commonwealth of Independent States, and internationally. The Mining segment produces and sells coking and steam coals, middlings, coke and chemical products, and iron ore concentrate. The Steel segment produces and sells semi-finished steel products; carbon and specialty long products; carbon and stainless flat products; and value-added downstream metal products, including forgings, stampings, hardware, rails, and ferrosilicon. The Power segment generates and supplies electricity and heat power to the third parties. It also provides transportation and freight services. The company was formerly known as Mechel OAO and changed its name to Mechel PAO in March 2016. Mechel PAO was incorporated in 2003 and is based in Moscow, Russia.

PowerShares Dynamic Semiconductors Portfolio (the Fund) seeks investment results that correspond generally to the price and yield of the Dynamic Semiconductors Intellidex Index (the Index). The Index is designed to provide capital appreciation by evaluating companies based on a variety of investment merit criteria, including fundamental growth, stock valuation, investment timeliness and risk factors. The Index consists of stocks of 30 United States semiconductors companies. These are companies that are principally engaged in the manufacture of semiconductors. These companies include companies involved in all aspects of the electronics business and in new technologies or specialty areas, including advanced design and manufacturing technologies, and lasers and electro-optics. The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Index. The Fund's investment advisor is Invesco PowerShares Capital Management LLC.

Willbros Group, Inc. is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and facilities development services. The Company operates through three segments: Oil & Gas, Utility T&D and Canada. The Company provides services through operating subsidiaries. The Company's segments operated primarily in the United States and Canada. The Company provides construction, maintenance and lifecycle extension services to the midstream markets. The Company provides a range of services in electric and natural gas transmission and distribution, including engineering, procurement, maintenance and construction, repair and restoration of utility infrastructure. It is engaged in construction, maintenance and fabrication, including integrity and supporting civil work, general mechanical and facility construction, application program interface (API) storage tanks, general and modular fabrication.