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ProShares UltraShort Dow30 (the Fund), formerly UltraShort Dow30 ProShares, seeks daily investment results that correspond to twice (200%) the inverse (opposite) of the daily performance of the Dow Jones Industrial Average (DJIA). The DJIA is a price-weighted index maintained by editors of The Wall Street Journal. The Index includes 30 large-cap, blue-chip United States stocks, excluding utility and transportation companies. Components are selected through a discretionary process with no predetermined criteria except that components should be established United States companies. The DJIA is not limited to traditionally defined industrial stocks, instead, the Index serves as a measure of the entire United States market, covering such diverse industries as financial services, technology, retail, entertainment and consumer goods. The Index is a price return index. The Fund's investment advisor is ProShare Advisors LLC.

Imaging Dynamics Company Ltd., a medical technology company, manufactures and sells medical imaging devices in the Americas and internationally. The company researches and develops digital radiography (DR) equipment, including medical charge coupled device (CCD) detectors, medical flat panel detectors, multifunction X-ray machines, and veterinary X-ray machines. It also offers imaging detectors; flat panel detectors under Aquarius 8600 and VetnovaXion names; Magellan, a medical image processing software; and Sirius, a veterinary image processing software. In addition, the company provides 1600 Plus X-Series, a DR solution with a floor mounted U-arm multi-axis positioning device that includes X-ray tube, collimator, and generator; and veterinary DR systems. It offers products through dealers, distributors, and original equipment manufacturer partners. The company was formerly known as Imaging Dynamics Corporation and changed its name to Imaging Dynamics Company Ltd. in October 2001. Imaging Dynamics Company Ltd. was incorporated in 1995 and is headquartered in Toronto, Canada.

MBIA Inc. provides financial guarantee insurance services to public finance markets in the United States. It operates United States (U.S.) Public Finance Insurance, and International and Structured Finance Insurance segments. The company issues financial guarantees for municipal bonds, including tax-exempt and taxable indebtedness of the U.S. political subdivisions, as well as utility districts, airports, health care institutions, higher educational facilities, housing authorities, and other similar agencies and obligations issued by private entities. It also insures the non-U.S. public finance and global structured finance, including asset-backed obligations; and sovereign-related and sub-sovereign bonds, and privately issued bonds used for the financing for utilities, toll roads, bridges, public transportation facilities, and other types of infrastructure projects, as well as offers third-party reinsurance services. MBIA Inc. was founded in 1973 and is headquartered in Purchase, New York.