ING Direct Savings Account Now 4.25% - History of Lagging?

ING Direct raised the yield on their Orange Savings Account today from 4.15% to 4.25% APY. This puts their savings account yield 0.40% under both HSBC and EmigrantDirect and under 0.50% to the new leaders of Amboy Direct and Citibank.

Looking back at last year, I thought it would be interesting to compare ING Direct's savings account rate with those of HSBC and EmigrantDirect. Last year at this time, ING Direct savings account was at 3% APY which was identical to HSBC's new savings account rate and just 0.25% under EmigrantDirect's yield. However, as the year progressed, ING started to lag both of the others by anywhere from 0.10% to 0.60%. Below are the details:

How Much ING Direct has lagged:
              HSBC     Emigrant
05/31/05      0.00%     0.25%
06/30/05      0.00%     0.25%
07/31/05      0.10%     0.35%
08/31/05      0.20%     0.20%
09/30/05      0.35%     0.60%
10/31/05      0.35%     0.60%
11/30/05      0.50%     0.50%
12/31/05      0.45%     0.20%

Thanks to the commenter who mentioned this update in the finding deals post.