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. For an inflation-linked security the difference is mostly inflation rather than float: Treasury reports what a holder is owed today, which includes the uplift shown as the index ratio above, while the index keeps original par and carries the uplift in the price. The index figures are published per holding.
Inflation-linked measures, September 30, 2026
An inflation-linked security prices off a real curve, so its yield is a real yield, a return above inflation rather than in cash terms, and its principal is indexed. The figures below are in REAL terms unless labeled otherwise.
Real yield
withheld
Index ratio
1.2220
Real duration
0.038 yr
DV01
0.0004
Convexity
0.0000292
Real clean price
99.969
Accrued (real)
0.058
Real dirty price
100.026
Indexed principal
122.199
Money clean price
122.161
The index ratio is a multiplier, not a percentage: 1.2220 means the principal is worth that many times its original face today. So the real clean price of 99.969 is not what a buyer pays , multiply by the ratio to get 122.161 per 100 of original face.
Against the fitted real curve
Priced 6.76 cents per 100 of face rich to the real curve on that day.
Shown as a price rather than a yield. Less than a month of this security's life remained, and annualizing a stub that short is arithmetic rather than information, the same reason its real yield is withheld above.
Real yield, 1,231 observations
Price history
1,231 trading days to Sep 30, 2026
The most recent 20 trading days of prices for 91282CDC2.
Date
Bid
Offer
Close
Sep 30, 2026
–
99.969
99.969
Sep 29, 2026
–
99.969
99.969
Sep 28, 2026
–
99.938
99.938
Sep 25, 2026
–
99.906
99.938
Sep 24, 2026
–
99.906
99.906
Sep 23, 2026
–
99.906
99.906
Sep 22, 2026
–
99.875
99.875
Sep 21, 2026
–
99.844
99.844
Sep 18, 2026
–
99.844
99.844
Sep 17, 2026
–
99.813
99.813
Sep 16, 2026
–
99.813
99.813
Sep 15, 2026
–
99.813
99.813
Sep 14, 2026
–
99.781
99.813
Sep 11, 2026
–
99.781
99.781
Sep 10, 2026
–
99.781
99.781
Sep 9, 2026
–
99.750
99.750
Sep 8, 2026
–
99.719
99.719
Sep 4, 2026
–
99.719
99.719
Sep 3, 2026
–
99.688
99.688
Sep 2, 2026
–
99.688
99.688
Prices are per 100 of face, from Treasury's own end-of-day file. A dash in the bid or offer column means none was posted that day.
2 auctions
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.