NEW YORK ( TheStreet) -- The size and scope of ETFs is growing rapidly, as the adaptable funds take aim at an even broader audience. Among the top most-active symbols in the market today are ETFs like the Financial Select SPDR (XLF), SPDR Trust (SPY) and iShares MSCI Emerging Markets Index (EEM), evidence that these funds have taken more than a foothold.Originally touted as "mutual fund alternatives," it has now become clear that ETFs stand on their own and have aim beyond the mutual fund industry. The success of individual country funds like Market Vectors Russia (RSX) and fixed income products like iShares iBoxx $ Invest Grade Corp Bond (LQD), illustrate the range of the ETF product line.
ETF Boom: An Industry Evolves
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