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Invesco PowerShares is a boutique investment management firm based near Chicago which manages a family of exchange-traded funds or ETFs. The company has been part of Invesco, which markets the PowerShares product, since 2006. Created in 2002, PowerShares funds use quantitative indices as a benchmark.〔''The ETF Book'' by Richard A. Ferri, Don Phillips 2009 ISBN 0-470-53746-9 page 121〕 There are currently over 120 PowerShares ETFs.〔''Trading ETFs'' by Deron Wagner 2012 Bloomberg Press ISBN 1118109139 page 25〕 PowerShares cover and emulate a variety of market indices; for example, the ''PowerShares QQQ'' () is designed to replicate the NASDAQ-100 Index. The ''PowerShares QQQ'' is one of the most widely traded shares on the stock market, according to writer John J. Murphy.〔''The Visual Investor'' by John J. Murphy 2009 ISBN 0471144479 page 255〕〔 PowerShares ETFs also cover the commodities market, diversified and tiny or microcap stocks.〔''Commodity Strategies'' by Thomas J. Dorsey 2007 ISBN 0470126310 page 150〕 For instance, the PowerShares DB Commodity Index Tracking Fund, or DBC, which it developed with Deutsche Bank, allows for individual investors to invest in commodities by means of its ETF.〔''Understanding Exchange-Traded Funds'' by Archie M. Richards 2007 ISBN 0071484914 page 230〕 The PowerShares DB Oil Fund (DBO) deals with the crude oil index.〔 ==History== The company was founded in 2002 as PowerShares Capital Management. In 2006 PowerShares Capital Management was acquired by Invesco so that Invesco could get access to the ETF business and the company is renamed Invesco PowerShares. In 2006, PowerShares offered an exchange traded fund in the private equity market in a "diversified fashion", although a report in ''BusinessWeek'' suggested that analysts thought that the fund was "something people can live without." In 2005, PowerShares developed a fund to allow customers to invest in "tiny companies" or ''microcaps''; according to a report in the ''New York Times'', the ''Powershares Zacks Micro Cap Portfolio'' owns 330 stocks which follow the index of Zacks Investment Research, and the PowerShares ETF re-evaluates these tiny companies weekly, removing those which "do not pass muster".〔 In addition, the microcap ETF rebalances the entire index each quarter, according to the report.〔 In 2010, the firm was involved in a trademark infringement dispute with Select Sector SPDR Trust over whether trading symbols, or ''tickers'', could be considered as brand names. In 2013 the William F. Sharpe Award for ETF Product of the Year went to the PowerShares Senior Loan Portfolio ETF .〔(【引用サイトリンク】url=http://www.nasdaq.com/article/etf-award-winners-announced-bkln-phdg-cm312798 )〕〔(PowerShares Senior Loan Portfolio Recognized with William F. Sharpe Award for ETF Product of the Year ) Yahoo Finance〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Invesco PowerShares」の詳細全文を読む スポンサード リンク
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