Treasury bond

912810TT5 · 4.125% due August 15, 2053

Original term
30-Year
Maturity
Aug 15, 2053
Coupon
4.125%
Pays
Semi-Annual
Dated
Aug 15, 2023
First coupon
Feb 15, 2024
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$71.56bn
Held stripped
$13.21bn
Share stripped
18.46%

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. The index figures are published per holding.

Risk, September 9, 2026

Yield to maturity
5.325%
Modified duration
14.960 yr
DV01
0.1245
Convexity
320.442
Dirty price
83.229

Where its rate sensitivity sits

3M
6M
1Y
2Y
3Y
5Y
7Y
10Y
15Y
20Y
25Y
30Y
Sensitivity to a one basis point move at each point on the curve, in years. Concentrated in 12 of twelve buckets, summing to 15.079 years against a modified duration of 14.960.

Against the fitted curve

Priced 0.2 bp rich to the curve on that day, 2.43 cents per 100 of face.

That is 0.85 standard deviations from its own typical residual.

Yield to maturity, 769 observations

3.75%4.00%4.25%4.50%4.75%5.00%5.25%5.50%Aug 15, 2023Sep 9, 2026Aug 15, 2023Yield to maturity4.321%Aug 21, 2023Yield to maturity4.451%Aug 25, 2023Yield to maturity4.296%Aug 31, 2023Yield to maturity4.199%Sep 7, 2023Yield to maturity4.358%Sep 13, 2023Yield to maturity4.337%Sep 19, 2023Yield to maturity4.430%Sep 25, 2023Yield to maturity4.663%Sep 29, 2023Yield to maturity4.728%Oct 5, 2023Yield to maturity4.887%Oct 12, 2023Yield to maturity4.859%Oct 18, 2023Yield to maturity4.989%Oct 24, 2023Yield to maturity4.949%Oct 30, 2023Yield to maturity5.033%Nov 3, 2023Yield to maturity4.762%Nov 9, 2023Yield to maturity4.778%Nov 15, 2023Yield to maturity4.693%Nov 21, 2023Yield to maturity4.589%Nov 28, 2023Yield to maturity4.539%Dec 4, 2023Yield to maturity4.445%Dec 8, 2023Yield to maturity4.328%Dec 14, 2023Yield to maturity4.056%Dec 20, 2023Yield to maturity4.007%Dec 27, 2023Yield to maturity3.970%Jan 3, 2024Yield to maturity4.070%Jan 9, 2024Yield to maturity4.199%Jan 16, 2024Yield to maturity4.322%Jan 22, 2024Yield to maturity4.336%Jan 26, 2024Yield to maturity4.397%Feb 1, 2024Yield to maturity4.119%Feb 7, 2024Yield to maturity4.327%Feb 13, 2024Yield to maturity4.480%Feb 20, 2024Yield to maturity4.462%Feb 26, 2024Yield to maturity4.423%Mar 1, 2024Yield to maturity4.350%Mar 7, 2024Yield to maturity4.267%Mar 13, 2024Yield to maturity4.364%Mar 19, 2024Yield to maturity4.458%Mar 25, 2024Yield to maturity4.439%Mar 29, 2024Yield to maturity4.356%Apr 4, 2024Yield to maturity4.481%Apr 10, 2024Yield to maturity4.646%Apr 16, 2024Yield to maturity4.780%Apr 22, 2024Yield to maturity4.733%Apr 26, 2024Yield to maturity4.791%May 2, 2024Yield to maturity4.731%May 8, 2024Yield to maturity4.647%May 14, 2024Yield to maturity4.608%May 20, 2024Yield to maturity4.591%May 24, 2024Yield to maturity4.585%May 31, 2024Yield to maturity4.660%Jun 6, 2024Yield to maturity4.440%Jun 12, 2024Yield to maturity4.488%Jun 18, 2024Yield to maturity4.371%Jun 25, 2024Yield to maturity4.375%Jul 1, 2024Yield to maturity4.659%Jul 8, 2024Yield to maturity4.472%Jul 12, 2024Yield to maturity4.407%Jul 18, 2024Yield to maturity4.428%Jul 24, 2024Yield to maturity4.552%Jul 30, 2024Yield to maturity4.415%Aug 5, 2024Yield to maturity4.081%Aug 9, 2024Yield to maturity4.251%Aug 15, 2024Yield to maturity4.196%Aug 21, 2024Yield to maturity4.086%Aug 27, 2024Yield to maturity4.151%Sep 3, 2024Yield to maturity4.147%Sep 9, 2024Yield to maturity4.022%Sep 13, 2024Yield to maturity4.004%Sep 19, 2024Yield to maturity4.082%Sep 25, 2024Yield to maturity4.160%Oct 1, 2024Yield to maturity4.101%Oct 7, 2024Yield to maturity4.329%Oct 11, 2024Yield to maturity4.408%Oct 18, 2024Yield to maturity4.400%Oct 24, 2024Yield to maturity4.488%Oct 30, 2024Yield to maturity4.511%Nov 5, 2024Yield to maturity4.464%Nov 12, 2024Yield to maturity4.614%Nov 18, 2024Yield to maturity4.648%Nov 22, 2024Yield to maturity4.633%Nov 29, 2024Yield to maturity4.398%Dec 5, 2024Yield to maturity4.361%Dec 11, 2024Yield to maturity4.513%Dec 17, 2024Yield to maturity4.621%Dec 23, 2024Yield to maturity4.814%Dec 30, 2024Yield to maturity4.808%Jan 6, 2025Yield to maturity4.881%Jan 10, 2025Yield to maturity4.996%Jan 16, 2025Yield to maturity4.870%Jan 23, 2025Yield to maturity4.900%Jan 29, 2025Yield to maturity4.820%Feb 4, 2025Yield to maturity4.781%Feb 10, 2025Yield to maturity4.746%Feb 14, 2025Yield to maturity4.736%Feb 21, 2025Yield to maturity4.704%Feb 27, 2025Yield to maturity4.596%Mar 5, 2025Yield to maturity4.619%Mar 11, 2025Yield to maturity4.640%Mar 17, 2025Yield to maturity4.645%Mar 21, 2025Yield to maturity4.634%Mar 27, 2025Yield to maturity4.774%Apr 2, 2025Yield to maturity4.584%Apr 8, 2025Yield to maturity4.750%Apr 14, 2025Yield to maturity4.840%Apr 18, 2025Yield to maturity4.842%Apr 24, 2025Yield to maturity4.807%Apr 30, 2025Yield to maturity4.705%May 6, 2025Yield to maturity4.856%May 12, 2025Yield to maturity4.937%May 16, 2025Yield to maturity4.938%May 22, 2025Yield to maturity5.094%May 29, 2025Yield to maturity4.965%Jun 4, 2025Yield to maturity4.931%Jun 10, 2025Yield to maturity4.977%Jun 16, 2025Yield to maturity5.003%Jun 23, 2025Yield to maturity4.910%Jun 27, 2025Yield to maturity4.883%Jul 3, 2025Yield to maturity4.897%Jul 10, 2025Yield to maturity4.899%Jul 16, 2025Yield to maturity5.048%Jul 22, 2025Yield to maturity4.938%Jul 28, 2025Yield to maturity4.991%Aug 1, 2025Yield to maturity4.831%Aug 7, 2025Yield to maturity4.845%Aug 13, 2025Yield to maturity4.856%Aug 19, 2025Yield to maturity4.928%Aug 25, 2025Yield to maturity4.922%Aug 29, 2025Yield to maturity4.944%Sep 5, 2025Yield to maturity4.792%Sep 11, 2025Yield to maturity4.669%Sep 17, 2025Yield to maturity4.677%Sep 23, 2025Yield to maturity4.753%Sep 29, 2025Yield to maturity4.729%Oct 3, 2025Yield to maturity4.736%Oct 9, 2025Yield to maturity4.749%Oct 16, 2025Yield to maturity4.597%Oct 22, 2025Yield to maturity4.561%Oct 28, 2025Yield to maturity4.572%Nov 3, 2025Yield to maturity4.720%Nov 7, 2025Yield to maturity4.724%Nov 14, 2025Yield to maturity4.777%Nov 20, 2025Yield to maturity4.757%Nov 26, 2025Yield to maturity4.671%Dec 3, 2025Yield to maturity4.753%Dec 9, 2025Yield to maturity4.833%Dec 15, 2025Yield to maturity4.878%Dec 19, 2025Yield to maturity4.858%Dec 26, 2025Yield to maturity4.847%Jan 2, 2026Yield to maturity4.895%Jan 8, 2026Yield to maturity4.888%Jan 14, 2026Yield to maturity4.819%Jan 21, 2026Yield to maturity4.902%Jan 27, 2026Yield to maturity4.864%Feb 2, 2026Yield to maturity4.933%Feb 6, 2026Yield to maturity4.883%Feb 12, 2026Yield to maturity4.752%Feb 19, 2026Yield to maturity4.732%Feb 25, 2026Yield to maturity4.721%Mar 3, 2026Yield to maturity4.730%Mar 9, 2026Yield to maturity4.759%Mar 13, 2026Yield to maturity4.943%Mar 19, 2026Yield to maturity4.873%Mar 25, 2026Yield to maturity4.937%Mar 31, 2026Yield to maturity4.923%Apr 6, 2026Yield to maturity4.928%Apr 10, 2026Yield to maturity4.949%Apr 16, 2026Yield to maturity4.965%Apr 22, 2026Yield to maturity4.933%Apr 28, 2026Yield to maturity4.977%May 4, 2026Yield to maturity5.062%May 8, 2026Yield to maturity4.987%May 14, 2026Yield to maturity5.062%May 20, 2026Yield to maturity5.160%May 27, 2026Yield to maturity5.058%Jun 2, 2026Yield to maturity5.009%Jun 8, 2026Yield to maturity5.078%Jun 12, 2026Yield to maturity5.017%Jun 18, 2026Yield to maturity4.950%Jun 25, 2026Yield to maturity4.904%Jul 1, 2026Yield to maturity5.015%Jul 8, 2026Yield to maturity5.110%Jul 14, 2026Yield to maturity5.130%Jul 20, 2026Yield to maturity5.157%Jul 24, 2026Yield to maturity5.211%Jul 30, 2026Yield to maturity5.260%Aug 5, 2026Yield to maturity5.224%Aug 11, 2026Yield to maturity5.293%Aug 17, 2026Yield to maturity5.361%Aug 21, 2026Yield to maturity5.319%Aug 27, 2026Yield to maturity5.232%Sep 2, 2026Yield to maturity5.314%Sep 9, 2026Yield to maturity5.325%

Price history

769 trading days to Sep 9, 2026

80859095100105Aug 15, 2023Sep 9, 2026Aug 15, 2023Close96.719Aug 21, 2023Close94.625Aug 25, 2023Close97.125Aug 31, 2023Close98.750Sep 7, 2023Close96.125Sep 13, 2023Close96.469Sep 19, 2023Close94.969Sep 25, 2023Close91.375Sep 29, 2023Close90.406Oct 5, 2023Close88.094Oct 12, 2023Close88.500Oct 18, 2023Close86.656Oct 24, 2023Close87.219Oct 30, 2023Close86.063Nov 3, 2023Close89.906Nov 9, 2023Close89.688Nov 15, 2023Close90.938Nov 21, 2023Close92.500Nov 28, 2023Close93.281Dec 4, 2023Close94.750Dec 8, 2023Close96.625Dec 14, 2023Close101.188Dec 20, 2023Close102.031Dec 27, 2023Close102.688Jan 3, 2024Close100.938Jan 9, 2024Close98.750Jan 16, 2024Close96.719Jan 22, 2024Close96.500Jan 26, 2024Close95.531Feb 1, 2024Close100.094Feb 7, 2024Close96.656Feb 13, 2024Close94.219Feb 20, 2024Close94.500Feb 26, 2024Close95.125Mar 1, 2024Close96.281Mar 7, 2024Close97.625Mar 13, 2024Close96.063Mar 19, 2024Close94.563Mar 25, 2024Close94.875Mar 29, 2024Close96.188Apr 4, 2024Close94.219Apr 10, 2024Close91.688Apr 16, 2024Close89.719Apr 22, 2024Close90.406Apr 26, 2024Close89.563May 2, 2024Close90.438May 8, 2024Close91.688May 14, 2024Close92.281May 20, 2024Close92.531May 24, 2024Close92.625May 31, 2024Close91.500Jun 6, 2024Close94.875Jun 12, 2024Close94.125Jun 18, 2024Close95.969Jun 25, 2024Close95.906Jul 1, 2024Close91.531Jul 8, 2024Close94.375Jul 12, 2024Close95.406Jul 18, 2024Close95.063Jul 24, 2024Close93.156Jul 30, 2024Close95.281Aug 5, 2024Close100.750Aug 9, 2024Close97.906Aug 15, 2024Close98.813Aug 21, 2024Close100.656Aug 27, 2024Close99.563Sep 3, 2024Close99.625Sep 9, 2024Close101.750Sep 13, 2024Close102.063Sep 19, 2024Close100.719Sep 25, 2024Close99.406Oct 1, 2024Close100.406Oct 7, 2024Close96.656Oct 11, 2024Close95.406Oct 18, 2024Close95.531Oct 24, 2024Close94.156Oct 30, 2024Close93.813Nov 5, 2024Close94.531Nov 12, 2024Close92.250Nov 18, 2024Close91.750Nov 22, 2024Close91.969Nov 29, 2024Close95.563Dec 5, 2024Close96.156Dec 11, 2024Close93.781Dec 17, 2024Close92.156Dec 23, 2024Close89.344Dec 30, 2024Close89.438Jan 6, 2025Close88.406Jan 10, 2025Close86.813Jan 16, 2025Close88.563Jan 23, 2025Close88.156Jan 29, 2025Close89.281Feb 4, 2025Close89.844Feb 10, 2025Close90.344Feb 14, 2025Close90.500Feb 21, 2025Close90.969Feb 27, 2025Close92.563Mar 5, 2025Close92.219Mar 11, 2025Close91.906Mar 17, 2025Close91.844Mar 21, 2025Close92.000Mar 27, 2025Close89.969Apr 2, 2025Close92.750Apr 8, 2025Close90.313Apr 14, 2025Close89.031Apr 18, 2025Close89.000Apr 24, 2025Close89.500Apr 30, 2025Close90.969May 6, 2025Close88.813May 12, 2025Close87.688May 16, 2025Close87.688May 22, 2025Close85.563May 29, 2025Close87.313Jun 4, 2025Close87.781Jun 10, 2025Close87.156Jun 16, 2025Close86.813Jun 23, 2025Close88.094Jun 27, 2025Close88.469Jul 3, 2025Close88.281Jul 10, 2025Close88.250Jul 16, 2025Close86.219Jul 22, 2025Close87.719Jul 28, 2025Close87.000Aug 1, 2025Close89.219Aug 7, 2025Close89.031Aug 13, 2025Close88.875Aug 19, 2025Close87.875Aug 25, 2025Close87.969Aug 29, 2025Close87.656Sep 5, 2025Close89.781Sep 11, 2025Close91.563Sep 17, 2025Close91.438Sep 23, 2025Close90.344Sep 29, 2025Close90.688Oct 3, 2025Close90.594Oct 9, 2025Close90.406Oct 16, 2025Close92.625Oct 22, 2025Close93.156Oct 28, 2025Close93.000Nov 3, 2025Close90.844Nov 7, 2025Close90.781Nov 14, 2025Close90.031Nov 20, 2025Close90.313Nov 26, 2025Close91.563Dec 3, 2025Close90.375Dec 9, 2025Close89.250Dec 15, 2025Close88.625Dec 19, 2025Close88.906Dec 26, 2025Close89.063Jan 2, 2026Close88.406Jan 8, 2026Close88.500Jan 14, 2026Close89.469Jan 21, 2026Close88.313Jan 27, 2026Close88.844Feb 2, 2026Close87.906Feb 6, 2026Close88.594Feb 12, 2026Close90.438Feb 19, 2026Close90.719Feb 25, 2026Close90.875Mar 3, 2026Close90.750Mar 9, 2026Close90.344Mar 13, 2026Close87.781Mar 19, 2026Close88.750Mar 25, 2026Close87.875Mar 31, 2026Close88.063Apr 6, 2026Close88.000Apr 10, 2026Close87.719Apr 16, 2026Close87.500Apr 22, 2026Close87.938Apr 28, 2026Close87.344May 4, 2026Close86.219May 8, 2026Close87.219May 14, 2026Close86.219May 20, 2026Close84.938May 27, 2026Close86.281Jun 2, 2026Close86.938Jun 8, 2026Close86.031Jun 12, 2026Close86.844Jun 18, 2026Close87.750Jun 25, 2026Close88.375Jul 1, 2026Close86.875Jul 8, 2026Close85.625Jul 14, 2026Close85.375Jul 20, 2026Close85.031Jul 24, 2026Close84.344Jul 30, 2026Close83.719Aug 5, 2026Close84.188Aug 11, 2026Close83.313Aug 17, 2026Close82.469Aug 21, 2026Close83.000Aug 27, 2026Close84.094Sep 2, 2026Close83.063Sep 9, 2026Close82.938
The most recent 20 trading days of prices for 912810TT5.
DateBidOfferClose
Sep 9, 202682.75082.71982.938
Sep 8, 202683.43883.40683.281
Sep 4, 202683.45383.43883.406
Sep 3, 202683.56383.53183.344
Sep 2, 202683.07883.06383.063
Sep 1, 202683.40683.37583.063
Aug 31, 202683.18883.15683.344
Aug 28, 202684.20384.18883.750
Aug 27, 202684.26684.25084.094
Aug 26, 202684.23484.21984.219
Aug 25, 202684.26684.25084.344
Aug 24, 202683.78183.75083.594
Aug 21, 202683.12583.09483.000
Aug 20, 202683.34483.31383.531
Aug 19, 202683.84483.81383.969
Aug 18, 202682.60982.59482.750
Aug 17, 202682.79782.78182.469
Aug 14, 202683.06383.03183.156
Aug 13, 202683.71983.68883.719
Aug 12, 202683.48483.46983.281

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.

Auction history for 912810TT5.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Aug 10, 2023Aug 15, 2023New issue$23.0bn$31.6bn2.42x4.189%
Sep 13, 2023Sep 15, 2023Reopening$20.0bn$20.0bn2.46x4.345%
Oct 12, 2023Oct 16, 2023Reopening$20.0bn$20.0bn2.35x4.837%

The curve this was priced against →

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.