SC AT1 ruling to cut Yes Bank CET1 to 11.4%: Moody's. Moody's affirmed Yes Bank's Ba1 deposit ratings with stable outlook but warned the Supreme Court's October 15 ruling reinstating AT1 bonds will drop its CET1 capital ratio from 13.7% to 11.4% and hurt profitability. The agency expects the bank to raise fresh equity to rebuild capital buffers, while noting improved asset quality and liquidity.