dshort

The Obama Bottom

The S&P 500 hit its recent low eight trading days ago. If we look at the bear markets in the S&P 500 since 1950, we see that the bottoming process lasted anywhere from six weeks to eight months:

dshort.com/charts/bear...

Drawing trend lines on charts during bear markets is an entertaining pastime. But the impact of the looming global recession on today's markets may keep you busy redrawing those lines for many months to come. The real precedents could indeed date from the late 1920s.

The chart line I find the most troubling is a linear regression on a century or more of market closes. Take your pick:

dshort.com/charts/dow....
dshort.com/charts/SP50...

You can speculate about the new sheriff in town and past being behind us. But I think the past remains very relevant. Take a look at these two charts and ponder one simple concept: "regression to the mean," which frequently involves overshooting in the opposite direction.