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
2.819%
Index ratio
1.0863
Real duration
6.733 yr
DV01
0.0629
Convexity
0.506
Real clean price
93.000
Accrued (real)
0.371
Real dirty price
93.371
Indexed principal
108.630
Money clean price
101.026
The index ratio is a multiplier, not a percentage: 1.0863 means the principal is worth that many times its original face today. So the real clean price of 93.000 is not what a buyer pays , multiply by the ratio to get 101.026 per 100 of original face.
Against the fitted real curve
Priced 1.7 bp cheap to the real curve on that day, 10.81 cents per 100 of face.
That is -1.26 standard deviations from its own typical residual.
Real yield, 669 observations
Price history
669 trading days to Sep 30, 2026
The most recent 20 trading days of prices for 91282CJY8.
Date
Bid
Offer
Close
Sep 30, 2026
93.156
93.125
93.000
Sep 29, 2026
92.953
92.938
93.156
Sep 28, 2026
93.141
93.125
93.156
Sep 25, 2026
93.453
93.438
93.625
Sep 24, 2026
93.609
93.594
93.406
Sep 23, 2026
94.078
94.063
93.844
Sep 22, 2026
94.734
94.719
94.750
Sep 21, 2026
94.688
94.656
94.813
Sep 18, 2026
94.531
94.500
94.406
Sep 17, 2026
94.844
94.813
94.906
Sep 16, 2026
95.141
95.125
94.500
Sep 15, 2026
95.063
95.031
95.000
Sep 14, 2026
95.281
95.250
95.125
Sep 11, 2026
95.422
95.375
95.188
Sep 10, 2026
95.844
95.813
95.594
Sep 9, 2026
96.188
96.156
96.219
Sep 8, 2026
96.438
96.406
96.406
Sep 4, 2026
96.422
96.406
96.406
Sep 3, 2026
96.750
96.719
96.531
Sep 2, 2026
96.344
96.313
96.313
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.