Of all the scary things that happened last Monday when the Dow Jones Industrial Average fell more than 1,000 points, nothing was scarier than what happened with exchange-traded funds (ETFs).
They crashed and exacerbated the market sell-off. They're not all a bad risk, and there are some we like to recommend that are quite safe - even essential - during a market reversal.
Investors need to understand exactly what it is they're holding. But this opens a can of worms Wall Street would rather leave shut tight, because there's a danger to investors from some of these.