Maybe the single best barometer of just how crazy the markets were this past decade is to simply look at the Dow’s decade low and decade high. The decade low was 6,547 (March 9, 2009), and the decade high was the above-mentioned 14,164 (October 9, 2007). That’s an almost 8,000 point swing occurring in the same decade. Think of it this way: It took the Dow 101 years to move the first 8,000 points.

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