20-year Treasury yield drops 10 basis points ahead of record-high auction

The 20-year US Treasury yield fell roughly 10 basis points ahead of an auction that’s shaping up to be a major stress test for the government’s ability to borrow at the long end of the curve. Yields on the benchmark had been trading around 5.27% to 5.28%, levels not seen since the bond was reintroduced in May 2020, before pulling back as buyers stepped in ahead of the sale. The auction, scheduled for August 19, is expected to offer around $16 billion in long-dated debt. Why this auction matters more than most The previous reopening auction on July 22 came in with a high yield of 5.163%. The when-issued level at that sale was 5.158%, meaning the auction essentially priced right at market expectations. A tight spread between those two numbers, sometimes called the “tail,” is a sign of healthy demand. A wider gap would suggest dealers had to offer sweeter terms to attract buyers. Pre-auction trading for the upcoming sale has indicated when-issued yields near 5.27%. That’s more than 10 basis points above where the last auction cleared. The fiscal backdrop The 20-year bond has an unusual history. The Treasury stopped issuing it in 1986, then brought it back in May 2020 during the pandem...