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
3.192%
Index ratio
1.0604
Real duration
19.599 yr
DV01
0.1671
Convexity
4.89
Real clean price
84.844
Accrued (real)
0.432
Real dirty price
85.276
Indexed principal
106.038
Money clean price
89.967
The index ratio is a multiplier, not a percentage: 1.0604 means the principal is worth that many times its original face today. So the real clean price of 84.844 is not what a buyer pays , multiply by the ratio to get 89.967 per 100 of original face.
Against the fitted real curve
Priced 1.9 bp cheap to the real curve on that day, 31.14 cents per 100 of face.
That is 0.94 standard deviations from its own typical residual.
Real yield, 412 observations
Price history
412 trading days to Oct 20, 2026
The most recent 20 trading days of prices for 912810UH9.
Date
Bid
Offer
Close
Oct 20, 2026
84.750
84.688
84.844
Oct 19, 2026
84.359
84.313
83.875
Oct 16, 2026
85.078
85.000
84.844
Oct 15, 2026
84.703
84.625
84.469
Oct 14, 2026
82.891
82.813
83.406
Oct 13, 2026
82.828
82.750
82.750
Oct 9, 2026
82.141
82.094
82.031
Oct 8, 2026
81.656
81.594
82.188
Oct 7, 2026
81.031
80.969
81.344
Oct 6, 2026
81.750
81.688
81.594
Oct 5, 2026
81.234
81.188
81.156
Oct 2, 2026
82.000
81.938
81.719
Oct 1, 2026
82.063
82.000
82.125
Sep 30, 2026
82.125
82.063
81.938
Sep 29, 2026
82.250
82.188
82.563
Sep 28, 2026
82.750
82.688
82.719
Sep 25, 2026
83.469
83.406
83.750
Sep 24, 2026
84.375
84.313
83.938
Sep 23, 2026
85.625
85.563
85.219
Sep 22, 2026
86.859
86.813
86.875
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.