Guest Post on ETF.com: Sector ETFs Not Ideal Passive Tools

By Ellie Lan

Exchange-traded funds have seen enormous growth in assets under management over the past two decades. And trading frequency has kept pace.

From July 2014 to July 2015, $18 trillion of ETF shares exchanged hands (to put things into perspective, the U.S. GDP stands around $17 trillion). Considering that the total net assets of ETFs as of year-end 2014 was around $2 trillion, the average turnover of shares in ETFs was more than eightfold.

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This article originally published October 7th, 2015 on ETF.com.