Direxion changes the benchmark indices tracked by several of its funds (along with some symbols and names), effective June 29. BGU, BGZ, MWJ, MWN, THY, TYP, ERX, and ERY will go from tracking Russell indexes to those from S&P. All symbol, name, and index changes here.
From other sites
at MarketWatch.com (Mar 21, 2014)
at MarketWatch.com (Oct 31, 2013)
ETF Screener: Search and filter by asset class, strategy, theme, performance, yield, and much more
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ETF Selector: An explanation of how to select and use ETFs