Chart of the Day – 10.18.2008***

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CHART OF THE DAY….A couple of weeks ago I quit watching the stock market’s gyrations during the day because it was obvious that they didn’t really mean anything. Up, down, whatever: the events of the final hour, from 3 pm to 4 pm were all that mattered, wiping out huge gains in an instant or turning small losses into disasters.

Now comes a nice chart via Zubin Jelveh that demonstrates the point graphically. As you can see, normally the stock market moves anywhere from a quarter of a percent to one percent in the final hour of the day. That’s roughly the same as the other six hours the market is open. But since mid-September? Final-hour volatility jumped to 2%, and then earlier this month to a high of 6%. That’s as much movement as the entire rest of the day. So if you’re the nervous sort, give yourself a break and take your eyes off the hourly movements of the Dow. Just check in at 4 pm and be done with it.

Need some more charts? Ezra Klein has a nice one showing that sometimes placebos work just as well as surgery. (With a followup here.) Maybe those Christian Scientists are on to something after all?

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It’s really that simple. But if you’d like to read a bit more, our membership lead, Brian Hiatt, has a post for you highlighting some of our newsroom's impressive, impactful work of late—including two big investigations in just one day and covering voting rights the way it needs to be done—that we hope you’ll agree is worth supporting.

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