Mortgage insurance was the credit enhancement of choice for subprime securities issuers during the second quarter of 2001, new data from Standard & Poor’s suggest. In an update on trends in the residential mortgage-backed securities market, the rating agency reported that more than half – 52 percent – of the subprime deals it rated during the second quarter contained deep mortgage insurance, loan level coverage that effectively cuts a mortgage’s loan-to-value ratio. While that was