Popular choices for and against include the SPDR Dow Jones Industrial Average ETF Trust (DIA) and the ProShares UltraPro Short Dow30 (SDOW). See more DJIA ETFs Questions or Comments about the article?

The S&P 500 (SP500) has again pushed into correction territory, with Wall Street on Thursday watching if it will finish 10% below its high -and if the retreat turns into something bigger ...