FNMA 6.0 Coupon 

 In other words, it's still a good day, volatility is low, AND (though this graph doesn't show it) spreads vs. treasuries have firmed and tightened aka treasuries have lost a bit, but MBS holding steady.  All we need now is some MBS friendly data the rest of the week and things can get even better.

And in case you were doubting your risky float decision, here is a 2-day graph: