Benzinga's Mandatory ETF Reading for September 16, 2013

Big winners (up at least 5%): VelocityShares 3x Long Natural Gas ETN (NYSE: UGAZ).

Big losers (down at least 5%): VelocityShares 3x Inverse Natural Gas ETN (NYSE: DGAZ).

Unusual volume (at least 5X ADV): Global X China Energy ETF (NYSE: CHIE), iShares MSCI Poland Investable Market ETF (NYSE: EPOL), First Trust AlphaDEX Utilities Fund (NYSE: FXU), iShares US Utilities ETF (NYSE: IDU), Global X Social Media Index ETF (NASDAQ: SOCL) and the PowerShares Dynamic Utilities ETF (NYSE: PUI).

Must reads of the day:

Fabian Capital Management: Building an ETF portfolio for cheapskates.

ETF Trends: China ETFs could keep climbing if this technical analyst is correct.

ETF Trends: Some guy named Summers and Fed tapering.

Barron's: Money is is returning to emerging markets ETFs.

The Alibaba IPO is important to Internet ETFs,too.

Checking in with Hong Kong.

BlackRock/iShares: The Paradox in Fed QE Tapering.