As many experts predicted, investors are beginning to pull their money out of narrow niche exchange-traded funds, many of which are performing quite poorly of late, The Wall Street Journal reports.

And, certainly, there are many sector-specific ETFs, as fund companies have been anxious to launch as many ETFs as possible given their tremendous popularity. With all of the major indexes taken or a version of them created through enhanced indexes, fund firms turned to narrower and narrower sectors for new material.

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