The negative convexity loop in mortgages is starting to see casualties left and right. The most recent read on the 30 Year Cash Fannie Mortgage rose by 11 bps overnight, and by a stunning 1% in the last month. At 4.703% the prevailing wholesale mortgage rate is back to the highest it has been since May 2010. And while some have speculated that this inflection in rates would have been sufficient to get Americans to jump on refinancing their mortgages, attempting to catch low rates while they can, the jump has been so powerful that to many the now incremental 10% loss in purchasing power does not make a purchase equitable any more. As a result, ceteris paribus, home prices will have to decline by about 10% to compensate for the pick up in rates in just the last month. And since the jump in rates on a duration adjusted basis is even more painful, there will be increase selling of comparable securities as managers look to shed a sudden surge in duration, leading to a further spike in yields, and so forth.
And in terms of retail mortgage rates, i.e., those that are available to the broader plebs, bankrate has just announced that its 30 Year fixed has spiked from 5% to 5.19% overnight - the highest since April 21. Next up: another home pricing crash.