We take a look at what may have caused the flash crash and important lessons for investors.

SPDR SP Dividend ETF: http://www.zacks.com/funds/etf/SDY/profile?cid=cs-youtube-ft-card
Vanguard Consumer Staples ETF: http://www.zacks.com/funds/etf/VDC/profile?cid=cs-youtube-ft-card
Guggenheim SP 500 Equal Weight ETF: http://www.zacks.com/funds/etf/RSP/profile?cid=cs-youtube-ft-card
Teucrium Soybean Fund: http://www.zacks.com/funds/etf/SOYB/profile?cid=cs-youtube-ft-card

Follow us on StockTwits: http://stocktwits.com/ZacksResearch
Follow us on Twitter: https://twitter.com/ZacksResearch
Like us on Facebook: https://www.facebook.com/ZacksInvestmentResearch