by Calculated Risk on 5/30/2008 03:23:00 PM

"I don't know if it's going to be a majority or not but I think a large number of the [Alt-A] senior classes are facing downgrade pressure."
Grant Bailey, a senior director at Fitch, May 30, 2008

From Bloomberg: Fitch Changes Method of Rating Alt-A Mortgage Bond

Fitch Ratings modified how it assesses outstanding securities backed by Alt-A U.S. mortgages by starting to update projections for losses from non-delinquent loans instead of keeping estimates static from the time of issuance.

A record jump in delinquencies and defaults prompted the change ... Borrowers are at least 60 days late on 11 percent of adjustable-rate Alt-A loans backing bonds created in 2006 and rated by the firm, compared with a historical average of 1 percent to 2 percent.
...
The firm hasn't yet decided whether to use its new surveillance approach on prime-jumbo mortgage securities, Barberio said....

The Fitch analysts weren't able to immediately say how many Alt-A securities from the past three years have been downgraded. Most of the non-AAA bonds were lowered and others remain under review, they said.

Top-rated securities accounted for about 90 percent of the debt created in Alt-A deals. The company will downgrade many over the next few months, [Grant Bailey, a senior director at Fitch] said.

``I don't know if it's going to be a majority or not but I think a large number of the senior classes are facing downgrade pressure,'' he said.

More downgrades coming ...