Auction History: US Treasury to sell USD 13bln of 20-year bonds on 21st October; to settle on 22nd October

• High Yield: (prev. 5.420%, six-auction avg. 5.120%)
• Tail: (prev. 2.0bps, six-auction avg. 0.2bps)
• Bid-to-Cover: (prev. 2.57x, six-auction avg. 2.62x)
• Dealers: (prev. 16.9%, six-auction avg. 11.9%)
• Directs: (prev. 30.7%, six-auction avg. 22.9%)
• Indirects: (prev. 52.5%, six-auction avg. 65.2%)

The 20-year has been the Treasury's least-loved tenor since its reintroduction, trading cheap to the curve on thin liquidity and limited natural sponsorship, which has made its auctions structurally more prone to tailing than the adjacent 10- and 30-year points. Prior episodes have followed a recognisable sequence: weak indirect participation in a sector where foreign demand has historically carried the bid forces dealers to backstop the book, and a dealer takedown materially above the running average tends to steepen the long end as the residual inventory is hedged and redistributed. The previous auction fits that softer pattern, with a 2bp tail against a near-flat six-auction average and indirects well below trend while directs absorbed an unusually large share, a rotation that historically reads as domestic dip-buying substituting for foreign sponsorship rather than new demand. The relevant distinction is whether the concession builds into the 1pm deadline or the market cheapens the tenor preemptively, since well-telegraphed cheapening has tended to produce stop-throughs even at this point on the curve. Follow-ons are the size announcement cadence around this maturity, any hints of buyback or issuance mix adjustments from the refunding, and whether indirects revert toward the mid-sixties share that has marked the clean results. The tail and the indirect bid remain the two numbers that set the afternoon tone for the long end.