Bill Berliner Market Update: November 23, 2009
Mortgages lagged for most of last week, putting a bit of a damper on their recent run. The Fannie 30-year Current Coupon spread widened out by 5 basis points on the week, even though the sector had a good day on Friday (as shown in Chart 3 below). Most coupons had a very bad week, with Fannie 4.0s lagging the 5-year by almost ½ point. The 15-year current coupon appeared to widen substantially, but this represents a bit of a distortion; since Dwarf 4.0s (trading over 102) are the lowest liquid coupon, the current coupon yield has to be extrapolated from higher coupon prices, rather than interpolated from discount and premium coupons. (On a duration-neutral basis, they generally underperformed Treasuries in line with their 30-year counterparts.) The widening may reflect the recognition that the Fed is winding down its agency MBS purchase program, having “only” net purchases of $16 billion last week and $29.5 billion for the last two weeks....