It cannot make decisions when there are just five trading days left.
The company announced its results after the end of the normal trading day.
That year, it fell 5.6 percent in the first five trading days.
At that time, risk management was only available after the end of each trading day.
The market's slide was the second in two trading days.
And Sunday was not a big trading day, anyway, at the time.
Indeed, it has now moved higher in seven of the last eight trading days.
Around 10:30, an hour into the trading day, everyone seemed surprised by how well the market was doing.
But this September, with one trading day left, is up more than 4 percent.
So in the last two trading days the Dow has lost 0.14.