The supply of residential MBS in the market grew tepidly in the second quarter of 2015, but not enough to increase the overall securitization rate for home mortgages. A total of $6.335 trillion of single-family MBS were outstanding at the end of June, a slim 0.1 percent increase from the previous quarter. The supply of MBS has been bouncing slightly higher and lower over the past six quarters, without gaining much traction. With total home mortgage debt outstanding climbing by 0.4 percent during the second quarter, the share of securitized loans fell...[Includes two data tables]