Corus Money Market Account Now 4.91%

Corus Bank's money market account took a big bump-up today going from 4.81% to 4.91% APY. Corus updates rates every Tuesday. For the past several weeks it hasn't gone up and has even gone down slightly a few times. The last increase was on May 9th when it went from 4.79% to 4.84% APY. It should be noted that this account is indexed to the 91-day US Treasury Bill discount rate. Corus Bank's 6-month and 12-month CD rates remained the same at 5.33% and 5.48%. Last week these rates had increased by 0.03%.