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, October 20, 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
3.009%
Index ratio
1.5279
Real duration
12.055 yr
DV01
0.1087
Convexity
1.67
Real clean price
89.781
Accrued (real)
0.387
Real dirty price
90.168
Indexed principal
152.793
Money clean price
137.180
The index ratio is a multiplier, not a percentage: 1.5279 means the principal is worth that many times its original face today. So the real clean price of 89.781 is not what a buyer pays , multiply by the ratio to get 137.180 per 100 of original face.
Against the fitted real curve
Priced 1.3 bp cheap to the real curve on that day, 13.85 cents per 100 of face.
That is 2.45 standard deviations from its own typical residual.
Real yield, 3,913 observations
Price history
3,913 trading days to Oct 20, 2026
The most recent 20 trading days of prices for 912810QP6.
Date
Bid
Offer
Close
Oct 20, 2026
89.797
89.719
89.781
Oct 19, 2026
89.578
89.500
89.250
Oct 16, 2026
89.969
89.875
89.875
Oct 15, 2026
89.688
89.594
89.563
Oct 14, 2026
88.484
88.406
88.844
Oct 13, 2026
88.531
88.438
88.438
Oct 9, 2026
88.109
88.031
88.000
Oct 8, 2026
87.859
87.781
88.219
Oct 7, 2026
87.453
87.375
87.656
Oct 6, 2026
87.938
87.875
87.813
Oct 5, 2026
87.547
87.469
87.438
Oct 2, 2026
88.047
87.969
87.813
Oct 1, 2026
88.000
87.938
88.063
Sep 30, 2026
88.156
88.094
87.813
Sep 29, 2026
88.125
88.063
88.281
Sep 28, 2026
88.438
88.375
88.438
Sep 25, 2026
88.984
88.938
89.156
Sep 24, 2026
89.625
89.563
89.250
Sep 23, 2026
90.484
90.406
90.156
Sep 22, 2026
91.469
91.406
91.438
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.
3 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.