Investor appetite for U.S. government debt continued to hold up on Thursday, as demonstrated by the results of a $22 billion auction of 30-year Treasury bonds that came just one day after a shockingly strong $39 billion 10-year Treasury auction.

Bond investors have been trying to figure out how much money to pour into the safety of U.S. government bonds and whether those bonds are actually all that safe anymore. Meanwhile, the Treasury Department has been holding auctions to sell new government bonds to investors,

An auction of $22 billion in 30-year Treasury bonds saw solid demand on Thursday. The auction, along with a strong sale of 10-year bonds the prior day, should allay some fears about buyers running away from U.