The Treasury Department Wednesday auctioned $13 billion of 29-year 10-month bonds with a 3% coupon at a 2.580% high yield, a price of 108.697683.
The bid-to-cover ratio was 2.70.
Tenders at the high yield were allotted 40.64%.
The median yield was 2.549%. The low yield was 2.436%.
Tenders totaled $35,062,538,200 and the Treasury accepted $13,000,030,200 including $9,838,200 non-competitive.
The Fed banks also bought nothing for their own account in exchange for maturing securities.
The bonds, dated May 15, 2012, will mature May 15, 2042.