The problem for some of those banks wasn't the 30 year treasuries, it was that they bought those treasuries with other peoples money, and other people did not commit to 30 years, so now when the other people come to get their money, the bank doesn't have it.
The 30 year treasuries are still doing just fine, in accordance to the terms of the treasury when it was bought.
The 30 year treasuries are still doing just fine, in accordance to the terms of the treasury when it was bought.