Which of the following is true
A. EWMA is a particular case of GARCH (1,1) where the reversion rate is zero
B. EWMA has a lower reversion rate than GARCH (1,1), but it is not zero
C. EWMA has a higher reversion rate than GARCH (1,1)
D. Sometimes EWMA has a higher reversion rate than GARCH (1,1) and sometimes it
has a lower reversion rate than GARCH (1,1).
Suppose that ABSs are created from portfolios of subprime mortgages with the
following allocation of the principal to tranches: senior 80%, mezzanine 10%, and
equity 10%. (The portfolios of subprime mortgages have the same default rates.) An
ABS CDO is then created from the mezzanine tranches with the same allocation of
principal. Losses on the mortgage portfolio prove to be 16%. What, as a percent of
tranche principal, are losses on the senior tranche of the ABS CDO
A. 50%
B. 60%
C. 80%
D. 100%