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ADF Group Inc. engages in the design and engineering of connections in Canada and the United States. It also fabricates and installs complex steel structures and heavy steel built-ups, as well as miscellaneous and architectural metalwork services. In addition, the company offers products and services for various segments of the non-residential construction industry, including office towers and high-rises, commercial and recreational buildings, airport facilities, industrial complexes, and transport infrastructures. It serves general contractors, project owners, engineering firms and project architects, structural steel erectors, and other steel structure fabricators. The company was formerly known as Les Entreprises El Drago Ltée and changed its name to ADF Group Inc. in August 1998. ADF Group Inc. was founded in 1956 and is headquartered in Terrebonne, Canada.

ProShares Ultra Nasdaq Biotechnology (the Fund) seeks investment results for a single day only, not for longer periods. The Fund seeks daily investment results, before fees and expenses, that correspond to twice (200%) the daily performance of the Index. The return of the Fund for a period longer than a single trading day will be the result of each day's returns compounded over the period, which will very likely differ from twice (200%) the return of the Nasdaq Biotechnology Index (the Index) for that period. The Fund does not seek to achieve its stated investment objective over a period of time greater than one day. The Fund invests in equity securities and derivatives that have similar daily performance characteristics as twice (200%) the daily return of the Index. The Fund invests in financial instruments whose value is derived from the value of an underlying asset, interest rate or index. ProShare Advisors LLC is the investment advisor of the Fund.

A.M. Castle & Co. engages in the distribution of specialty metals and supply chain services. The firm serves the producer equipment, commercial and military aircraft, heavy equipment, industrial goods, and construction equipment sectors. Its products include alloy and stainless steels, nickel alloys, aluminum, titanium, and carbon. The company was founded in 1890 and is headquartered in Oak Brook, IL.

Parker Drilling Co. engages in the provision of contract drilling and drilling-related services as well as rental tools and services. It operates through the Drilling Services and Rental Tools Services segment. The Drilling Services segment drills oil, natural gas, and geothermal wells for customers globally. The Rental Tools Services segment offers rental equipment and services to exploration and production companies, drilling contractors, and service companies on land and offshore in the U.S. and select international markets. The company was founded by Gifford C. Parker in 1934 and is headquartered in Houston, TX.