I see on Ally Financial's website that a 3-month certificate of deposit (CD) has an annual percentage yield (APY) of 0.75% whereas the saving account has an APY of 1.60%. This surprises me because I thought CDs offer less liquidity than saving accounts for the same level of risk, and subsequently would have guessed that the APY of any CDs at a given bank would always be higher than the APY of savings accounts at the same bank.
Why does a short-term certificate of deposit (CD) have a significantly smaller annual percentage yield (APY) than a savings account in some banks?
https://www.ally.com/bank/online-savings-account/ (mirror):
https://www.ally.com/bank/view-rates/?setPanel=cds-panel (mirror):