ERRATIC — The past week has seen a sudden jerk up and a countervailing jerk down. If you look at the three months of daily prices on this chart, what stands out is the very erratic shifts. The norm is a jerk up and a countervailing jerk down. The two weeks when the price remained flat earlier this month (at the right of the chart) is what is unusual. (This week, we have dropped the chart with the monthly average prices to fit in all the news.)
