The question posed in the title is just a bit too big for us to cover in this humble "day ahead" post, but we can touch on a few key points.  I just thought it was a good time to revisit it, given that 10yr yields are beginning the day once-again approaching the 3% barrier--something they've only done a few times since hitting all-time lows.

Following rate movement on a daily basis lends itself to overanalysis.  In the biggest of pictures, the rate reality we're seeing today is largely the byproduct of plans set in motion a year ago.  Specifically, the tax bill that materialized last September did more than anything else to precipitate the slow-motion train wreck that we've lived through as stakeholders in an industry that's highly dependent on rates.  This is easily seen in today's chart.

2018-9-14 Open

2yr yields have taken it on the chin for 2 reasons.  First, the government said it would borrow more short-term than long-term debt in order to pay for the tax bill.  Higher supply of US Treasuries pushes rates higher.  Second, 2's are more closely connected to Fed policy and the Fed is in the thick of a classic hiking cycle.

It's tempting to blame the Fed for much of the current upward pressure in rates, but they're simply reacting to the data and economic events.  Tax bills and stimulus measures increase the risk of strong growth and inflation.  As long as we keep getting strong econ data, the Fed will continue to be justified in hiking its policy rate.

As the chart suggests, after an initial reaction to all of the above, 10yr yields have tried to level off in 2018.  The zone in which they've leveled-off represents traders' best guess as to where all of the known inputs would leave rates.  Simply put, the data and events from the second half of the year have suggested a bit of an upward adjustment to that zone, and that's why we're pushing the upper boundary of the consolidation range presently.  

MBS Pricing Snapshot
Pricing shown below is delayed, please note the timestamp at the bottom. Real time pricing is available via MBS Live.
FNMA 4.0
101-09 : -0-01
10 YR
2.9866 : +0.0226
Pricing as of 9/14/18 8:30AMEST

Tomorrow's Economic Calendar
Time Event Period Forecast Prior
Friday, Sep 14
8:30 Export prices mm (%)* Aug 0.0 -0.5
8:30 Retail Sales (%)* Aug 0.4 0.5
8:30 Import prices mm (%)* Aug -0.2 0.0
9:15 Capacity Utilization (%) Aug 78.2 78.1
9:15 Industrial Production (%) Aug 0.3 0.1
10:00 Consumer Sentiment Sep 96.6 96.2
10:00 1yr Inflation Outlook (%)* Sep 3.0
10:00 5yr Inflation Outlook (%)* Sep 2.6
10:00 Business Inventories (% ) Jul 0.6 0.1