When the price of Mortgage Backed Securities (MBS) on the above chart above goes up mortgage rates come down. When the price goes down mortgage rates go up.
Prices and the chart will look different tomorrow due to the monthly rollover. This will not have an affect on yields. Prices were flat at the close today. Let me know if you have any questions.
Below is the news when it happened and market reaction. All of the times below are Eastern Standard Time
10:12 AM New Rates have been posted http://www.johnmarbury.com/page5.html/