Insufficient funds http://skipetriny.cz/magellanrxcom-dbbb.pdf#wax magellanrx.com  The RWN on ATB's IDRs, SR, National Ratings and senior debt ratings mirrors that on AB's IDRs as they are sensitive to any change in Fitch's assumptions around AB's capacity to support the bank. A downgrade of ATB's ratings by more than one notch is possible.