What moves it is issuance, not market data: each bucket is a supply choice, not an index weight.
- 3-year, 10-year and 30-year refunding auctions: the core sales replacing maturing debt and raising stated new cash, or net new borrowing.
- Nominal coupon path: month-by-month size changes that align fixed-rate sales with expected borrowing needs.
- 2-year Floating Rate Notes: variable-rate debt that widens the buyer base.
- TIPS (Treasury Inflation-Protected Securities): inflation-linked debt kept to hold a stable share of total debt.
- Bills and cash-management bills: short-term debt that absorbs seasonal or unexpected borrowing changes.
- Buybacks: repurchases supporting market liquidity, or ease of trading, and smoothing bills around tax dates.
The November 1, 2023 refunding offered $112B to replace about $102.2B maturing, raising about $9.8B in new cash. It sold $48B of 3-year notes, $40B of 10-year notes and $24B of 30-year bonds, while holding 20-year bonds flat. Treasury said it would keep gradually raising coupons, likely for one more quarter, at a more moderate pace for longer dates. Markets read the smaller long-end rises as bond-friendly, and the 10-year yield, or market rate, fell from 4.90% to 4.83% after topping near 5%.