Your calculation logic is right, but it seems that your quote for EuroDollar yield is wrong. I checked Bloomberg today, the yiled for Dec 08, 2009 is 1.89% ( EDA Comdty HP) and the yiled for 3M T-Bill is -0.035%. So the TED is about 1.92%.

Also keep in mind, sometime the Bloomberg prices could be updated since it gets latest quotes from market source.

Hope it will help you!

Your calculation logic is right, but it seems that your quote for EuroDollar yield is wrong. I checked Bloomberg today, the yiled for Dec 08, 2009 is 1.89% ( EDA Comdty HP) and the yiled for 3M T-Bill is -0.035%. So the TED is about 1.92%.

Also keep in mind, sometime the Bloomberg prices could be updated since it gets latest quotes from market source.

Hope it will help you!