May signal an intraday or end of week maximum in :
OMO 10, 20, and 30 year purchases
Some kind of decision by the member banks and the private banks to cut back on margin purchases, due to margin interest costs, while demand of overnight cash is increasing.
Why would demand for overnight cash be increasing ?
More and more margin purchases of 10 year, 20 year, and 30 year.
And just possibly, futures margin rate forced up via futures margin debt demand.
there doesn't seem to be anything here