With no economic data or mortgage related headlines of note, the stock market is exerting some forces on the MBS market.  With the Dow down over 100 points right now, MBS have rebounded a bit with the 5.5% coupon back up 100-13.  That's only an eighth in the red for the day.

Treasuries are flirting with the unchanged level, which is a good indicator for MBS.  Keep floating.