Helpful Data, MBS Underperformance, Is This Time Different? The bond market reacted favorably to this morning's economic data which consisted of sharply lower producer prices at the core level and sharply higher jobless claims.  But based on the next few hours, traders might say the initial move was an overreaction.  It wasn't until the 30yr bond auction that Treasury yields were able to break to new lows for the day.  MBS, however, never made that quantum leap for reasons we ponder in today's recap video.  One of the reasons has to do with the chance that "things are changing" in terms of broad rate momentum, but we can't really know if this time is different until several months of data confirm the story that's currently only 2 days old.  Econ Data / EventsMonth over month core PPI 0.0 vs 0.3 f'cast, 0.5 prev Year over year core PPI2.3 vs 2.4 f'cast, 2.4 prev Jobless Claims242k vs 225k f'cast, 229k prev Market Movement Recap09:18 AM modestly stronger overnight with additional gains after data.  MBS up 7 ticks (.22) and 10yr down 4.2bps at 4.276 10:59 AM Slowly losing ground after initial data-driven rally.  MBS still up 5 ticks (.16) and 10yr still down 4.1bps at 4.278. 11:46 AM Bouncing back a bit now.  10yr down 6.4bps at 4.256.  MBS up nearly a quarter point. 01:05 PM Best levels of the day after 30yr bond auction.  10yr down 9.5bps at 4.224.  MBS up 10 ticks (.31). 03:11 PM Sideways in the PM for MBS, still up 10 ticks in 5.5 coupons.  10yr broadly sideways, currently down 8bps at 4.239