A structural change in Freddie Mac’s popular Structured Agency Credit Risk transfer program gives Freddie less credit protection at higher loss levels, according to an analysis of the GSE’s first STACR deal of the year. So far, this year, Freddie has priced STACR Series 2017-DNA1 on Jan. 31 and STACR Series 2017-HQA1 on Feb. 14. The first deal of the year was an $802 million STACR debt notes offering referencing mortgages with low loan-to-value ratios ranging from 60 to 80 percent. This particular deal has a reference pool of single-family mortgages with an unpaid principal balance of about $33.9 billion.