Stripped par is held as separate interest and principal components rather than as whole securities. The Safe Rate indices deliberately do not deduct it, and the whole-market figure is published so that decision can be argued with. Market statistics.
Amount outstanding as reported by Treasury, in its Monthly Statement of the Public Debt. The Safe Rate indices weight on a different figure, float-adjusted original par, and the two are not comparable security by security. The index figures are published per holding.
Risk, November 9, 2026
Yield to maturity
withheld
Modified duration
0.055 yr
DV01
0.0005
Convexity
0.0000595
Dirty price
100.599
Yield and duration are withheld this close to maturity, not missing. Inside a month a Treasury trades on settlement mechanics rather than on yield, and its price is a rounding of par, annualizing a two-day stub produces a number in the tens of percent that would be arithmetically correct and completely misleading. The price, the residual and the key rate durations below are unaffected.
Where its rate sensitivity sits
0.05
3M
6M
1Y
2Y
3Y
5Y
7Y
10Y
15Y
20Y
25Y
30Y
Sensitivity to a one basis point move at each point on the curve, in years. All of it sits at 3M. For a security with a single remaining cashflow that is the true shape, not missing data.
Against the fitted curve
Priced 1.26 cents per 100 of face rich to the curve on that day.
Shown as a price rather than a yield. This security was close enough to maturity that annualizing is meaningless, the same reason it carries no yield to maturity above, and the same difference quoted in basis points would read as an enormous mispricing rather than the few cents it is.
Yield to maturity, 1,736 observations
Price history
1,736 trading days to Nov 9, 2026
The most recent 20 trading days of prices for 912828YU8.
Date
Bid
Offer
Close
Nov 9, 2026
99.875
–
99.875
Nov 6, 2026
99.844
–
99.844
Nov 5, 2026
99.844
–
99.844
Nov 4, 2026
99.844
–
99.844
Nov 3, 2026
99.813
–
99.813
Nov 2, 2026
99.813
–
99.813
Oct 30, 2026
99.813
–
99.813
Oct 29, 2026
99.781
–
99.781
Oct 28, 2026
99.781
–
99.781
Oct 27, 2026
99.781
–
99.781
Oct 26, 2026
99.781
–
99.781
Oct 23, 2026
99.750
–
99.750
Oct 22, 2026
99.750
–
99.750
Oct 21, 2026
99.719
–
99.719
Oct 20, 2026
99.719
–
99.719
Oct 19, 2026
99.688
–
99.719
Oct 16, 2026
99.719
–
99.719
Oct 15, 2026
99.688
–
99.688
Oct 14, 2026
99.688
–
99.688
Oct 13, 2026
99.688
–
99.688
Prices are per 100 of face, from Treasury's own end-of-day file. A dash means that side was not quoted that day, which is almost always the offer and almost always near maturity: a holder of a bill days from paying par has little reason to sell it.
Auction
A CUSIP can be auctioned more than once: Treasury reopens an existing security rather than issuing a new one, so the same bond is sold again at whatever yield the market then wants.
Index levels before September 30, 2026 are back-tested. They were computed after the fact by applying the rules to historical data, which benefits from hindsight in the choice of rules, and an index cannot be invested in directly. Methodology v1.0 takes effect at that rebalance, when levels begin to be struck on the day; the rulebook is identical either way, and the version is published on every row.
A fitted curve is a fit, not a quote. Daily error averages 3.8 basis points across the history and reaches about 20 on the worst days, in December 2008, when the market was genuinely hard to fit one smooth curve to. Every curve page publishes its own fit error rather than burying it.
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Safe Rate™, Safe Rate Indices™ and the Safe Rate US Treasury Index™ are trademarks of Safe Rate, claimed through use in commerce and not registered. Third-party marks are the property of their owners, which are not affiliated with and do not endorse this data.
Curves are fitted from public Treasury data and carry fit error; figures are not a record of trading, and an index cannot be invested in directly. No claim of compliance with the IOSCO Principles for Financial Benchmarks is made or implied. Not investment advice, not an offer, and not a recommendation to buy or sell any security.