NEW YORK, Dec. 18 /PRNewswire/ -- QED International Associates Inc., administrator for the HealthShares(TM) Exchange-Traded Funds, a series of 20 underlying fund portfolios, today announced the quarterly rebalancing of the Indexes. The following securities will be added and deleted in the Indexes effective before the opening of trading on NYSE Arca December 24, 2007. Autoimmune-Inflammation Index (HHA) Drop Immunomedics, Inc. Nasdaq: IMMU Add Synta Pharmaceuticals, Inc. Nasdaq: SNTA Cardiology Devices Index (HHE) Drop NMT Medical Inc. Nasdaq: NMTI Add Boston Scientific, Inc. NYSE: BSX Dermatology and Wound Index (HRW) Drop Watson Pharmaceuticals Inc. NYSE: WPI Add Obagi Medical Products, Inc. Nasdaq: OMPI GI/Gender Index (HHU) Drop Neurocrine Biosciences, Inc. Nasdaq: NBIX Add Perrigo Company, Inc. Nasdaq: PRGO Metabolic-Endocrine Disorders Index (HHM) Drop Metabais Therapeutics Inc. Nasdaq: MBRX Add Hospira, Inc. NYSE: HSP Opthalmology Index (HHZ) Drop Oxigene Inc. Nasdaq: OXGN Staar Surgical Co. Nasdaq: STAA Watson Pharmaceuticals Inc. NYSE: WPI Add Hi-Tech Pharmacal Co. Inc. Nasdaq: HITK ISIS Pharmaceuticals Inc. Nasdaq: ISIS Opko Health, Inc. AMEX: OPK The rebalanced Indexes, including the rebalanced Index Shares, are based on the closing prices as of December 17, 2007. In accordance with the Exemptive Order, a complete list of the constituents reflecting the rebalancing will be posted at http://www.healthsharesinc.com/content/view/53/274/. About HealthShares(TM) XShares Advisors LLC, a financial services company based in New York, is the creator of the HealthShares(TM) family of Exchange Traded Funds (ETFs). HealthShares(TM) ETFs are organized into therapeutic 'Verticals' and represent specific areas of the healthcare, life science and biotechnology industries. Each Vertical addresses a distinct sub-segment of healthcare, such as the diagnosis and treatment of specific therapeutic areas (e.g. cardiology, cancer, infectious disease, etc.) and the development of medical devices (e.g. orthopedic repair, cardio devices, etc.). Each ETF tracks an index of 22-25 stocks and offers institutional and individual investors a more precise financial instrument that leverages the potential of healthcare investing while mitigating the risks of single stock picking. For more information, visit the company's website at: http://www.healthsharesinc.com/. About XShares XShares Advisors LLC, a subsidiary of XShares Group LLC, is a registered investment advisor that provides investment advisory services to Exchange Traded Funds. XShares also partners with major institutions and index providers seeking to bring innovative Exchange Traded Funds to market using its administrative platform. In addition, XShares creates and licenses distinctive intellectual property for its ETFs, developing products that allow for innovative trading strategies and alternative investments for the financial community. For more information, visit the company's website at http://www.xsharesadvisors.com/. About QED International Associates QED International, based in New York, is a leading financial industry consulting firm specializing in quantitative modeling and the design, development and maintenance of indexes and Exchange Traded Funds. For more information, visit the company's website at http://www.qedinternational.com/ DATASOURCE: QED International Associates Inc. CONTACT: Ed Matluck, CEO, , or Michael Carty, both of QED International, +1-212-953-4058; John T. McInerney of Makovsky + Company for XShares Advisors LLC, +1-212-508-9628, Web site: http://www.xsharesadvisors.com/ http://www.healthsharesinc.com/ http://www.healthsharesinc.com/content/view/53/274

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