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
2.588%
Index ratio
1.1233
Real duration
5.930 yr
DV01
0.0545
Convexity
0.39
Real clean price
91.625
Accrued (real)
0.300
Real dirty price
91.925
Indexed principal
112.330
Money clean price
102.922
The index ratio is a multiplier, not a percentage: 1.1233 means the principal is worth that many times its original face today. So the real clean price of 91.625 is not what a buyer pays , multiply by the ratio to get 102.922 per 100 of original face.
Against the fitted real curve
Priced 1.1 bp cheap to the real curve on that day, 6.15 cents per 100 of face.
That is -1.71 standard deviations from its own typical residual.
Real yield, 933 observations
Price history
933 trading days to Oct 20, 2026
The most recent 20 trading days of prices for 91282CGK1.
Date
Bid
Offer
Close
Oct 20, 2026
91.688
91.656
91.625
Oct 19, 2026
91.625
91.594
91.500
Oct 16, 2026
91.766
91.719
91.781
Oct 15, 2026
91.531
91.500
91.531
Oct 14, 2026
90.938
90.906
91.156
Oct 13, 2026
91.063
91.031
91.000
Oct 9, 2026
90.969
90.938
90.875
Oct 8, 2026
90.891
90.875
91.156
Oct 7, 2026
90.844
90.813
90.938
Oct 6, 2026
90.969
90.938
90.938
Oct 5, 2026
90.688
90.656
90.688
Oct 2, 2026
90.906
90.875
90.750
Oct 1, 2026
90.906
90.875
91.000
Sep 30, 2026
90.750
90.719
90.625
Sep 29, 2026
90.531
90.500
90.719
Sep 28, 2026
90.688
90.656
90.688
Sep 25, 2026
90.953
90.938
91.094
Sep 24, 2026
91.031
91.000
90.875
Sep 23, 2026
91.406
91.375
91.219
Sep 22, 2026
92.000
91.969
91.969
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.
Free to benchmark against. Paid only to track. Measuring anything against these curves and indices is free. No license, no fee, no registration, and no permission needed to say that you did, including in a prospectus. A fee applies to one thing: launching a product that tracks an index.
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.