Treasury bond

912810TB4 · 1.875% due November 15, 2051

Original term
30-Year
Maturity
Nov 15, 2051
Coupon
1.875%
Pays
Semi-Annual
Dated
Nov 15, 2021
First coupon
May 15, 2022
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$90.24bn
Held stripped
$15.38bn
Share stripped
17.05%

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
5.376%
Modified duration
17.074 yr
DV01
0.0898
Convexity
378.771
Dirty price
52.601

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 17.291 years against a modified duration of 17.074.

Against the fitted curve

Priced 2.3 bp rich to the curve on that day, 21.04 cents per 100 of face.

That is -0.19 standard deviations from its own typical residual.

Yield to maturity, 1,206 observations

1%2%3%4%5%6%Nov 15, 2021Sep 9, 2026Nov 15, 2021Yield to maturity2.010%Nov 23, 2021Yield to maturity2.024%Dec 2, 2021Yield to maturity1.762%Dec 10, 2021Yield to maturity1.880%Dec 20, 2021Yield to maturity1.854%Dec 29, 2021Yield to maturity1.958%Jan 6, 2022Yield to maturity2.090%Jan 14, 2022Yield to maturity2.123%Jan 25, 2022Yield to maturity2.122%Feb 2, 2022Yield to maturity2.116%Feb 10, 2022Yield to maturity2.312%Feb 18, 2022Yield to maturity2.262%Mar 1, 2022Yield to maturity2.121%Mar 9, 2022Yield to maturity2.309%Mar 17, 2022Yield to maturity2.510%Mar 25, 2022Yield to maturity2.608%Apr 4, 2022Yield to maturity2.494%Apr 12, 2022Yield to maturity2.831%Apr 21, 2022Yield to maturity2.944%Apr 29, 2022Yield to maturity2.959%May 9, 2022Yield to maturity3.192%May 17, 2022Yield to maturity3.213%May 25, 2022Yield to maturity3.017%Jun 3, 2022Yield to maturity3.152%Jun 13, 2022Yield to maturity3.446%Jun 22, 2022Yield to maturity3.270%Jun 30, 2022Yield to maturity3.160%Jul 11, 2022Yield to maturity3.202%Jul 19, 2022Yield to maturity3.199%Jul 27, 2022Yield to maturity3.067%Aug 4, 2022Yield to maturity3.003%Aug 12, 2022Yield to maturity3.177%Aug 22, 2022Yield to maturity3.306%Aug 30, 2022Yield to maturity3.287%Sep 8, 2022Yield to maturity3.511%Sep 16, 2022Yield to maturity3.575%Sep 26, 2022Yield to maturity3.748%Oct 4, 2022Yield to maturity3.735%Oct 13, 2022Yield to maturity3.998%Oct 21, 2022Yield to maturity4.357%Oct 31, 2022Yield to maturity4.253%Nov 8, 2022Yield to maturity4.291%Nov 17, 2022Yield to maturity3.964%Nov 28, 2022Yield to maturity3.814%Dec 6, 2022Yield to maturity3.582%Dec 14, 2022Yield to maturity3.572%Dec 22, 2022Yield to maturity3.786%Jan 3, 2023Yield to maturity3.930%Jan 11, 2023Yield to maturity3.713%Jan 20, 2023Yield to maturity3.687%Jan 30, 2023Yield to maturity3.684%Feb 7, 2023Yield to maturity3.746%Feb 15, 2023Yield to maturity3.859%Feb 24, 2023Yield to maturity3.944%Mar 6, 2023Yield to maturity3.917%Mar 14, 2023Yield to maturity3.790%Mar 22, 2023Yield to maturity3.699%Mar 30, 2023Yield to maturity3.765%Apr 7, 2023Yield to maturity3.643%Apr 17, 2023Yield to maturity3.830%Apr 25, 2023Yield to maturity3.670%May 3, 2023Yield to maturity3.723%May 11, 2023Yield to maturity3.770%May 19, 2023Yield to maturity3.981%May 30, 2023Yield to maturity3.934%Jun 7, 2023Yield to maturity3.971%Jun 15, 2023Yield to maturity3.866%Jun 26, 2023Yield to maturity3.844%Jul 5, 2023Yield to maturity3.956%Jul 13, 2023Yield to maturity3.906%Jul 21, 2023Yield to maturity3.919%Jul 31, 2023Yield to maturity4.031%Aug 8, 2023Yield to maturity4.209%Aug 16, 2023Yield to maturity4.396%Aug 24, 2023Yield to maturity4.322%Sep 1, 2023Yield to maturity4.319%Sep 12, 2023Yield to maturity4.377%Sep 20, 2023Yield to maturity4.430%Sep 28, 2023Yield to maturity4.751%Oct 6, 2023Yield to maturity4.976%Oct 17, 2023Yield to maturity4.965%Oct 25, 2023Yield to maturity5.113%Nov 2, 2023Yield to maturity4.848%Nov 10, 2023Yield to maturity4.775%Nov 20, 2023Yield to maturity4.618%Nov 29, 2023Yield to maturity4.481%Dec 7, 2023Yield to maturity4.295%Dec 15, 2023Yield to maturity4.059%Dec 26, 2023Yield to maturity4.111%Jan 4, 2024Yield to maturity4.197%Jan 12, 2024Yield to maturity4.272%Jan 23, 2024Yield to maturity4.452%Jan 31, 2024Yield to maturity4.299%Feb 8, 2024Yield to maturity4.436%Feb 16, 2024Yield to maturity4.513%Feb 27, 2024Yield to maturity4.500%Mar 6, 2024Yield to maturity4.297%Mar 14, 2024Yield to maturity4.492%Mar 22, 2024Yield to maturity4.441%Apr 1, 2024Yield to maturity4.518%Apr 9, 2024Yield to maturity4.536%Apr 17, 2024Yield to maturity4.744%Apr 25, 2024Yield to maturity4.845%May 3, 2024Yield to maturity4.697%May 13, 2024Yield to maturity4.670%May 21, 2024Yield to maturity4.596%May 30, 2024Yield to maturity4.720%Jun 7, 2024Yield to maturity4.585%Jun 17, 2024Yield to maturity4.449%Jun 26, 2024Yield to maturity4.486%Jul 5, 2024Yield to maturity4.522%Jul 15, 2024Yield to maturity4.512%Jul 23, 2024Yield to maturity4.539%Jul 31, 2024Yield to maturity4.423%Aug 8, 2024Yield to maturity4.376%Aug 16, 2024Yield to maturity4.246%Aug 26, 2024Yield to maturity4.195%Sep 4, 2024Yield to maturity4.147%Sep 12, 2024Yield to maturity4.087%Sep 20, 2024Yield to maturity4.158%Sep 30, 2024Yield to maturity4.235%Oct 8, 2024Yield to maturity4.420%Oct 17, 2024Yield to maturity4.480%Oct 25, 2024Yield to maturity4.595%Nov 4, 2024Yield to maturity4.574%Nov 13, 2024Yield to maturity4.733%Nov 21, 2024Yield to maturity4.717%Dec 2, 2024Yield to maturity4.455%Dec 10, 2024Yield to maturity4.510%Dec 18, 2024Yield to maturity4.746%Dec 27, 2024Yield to maturity4.916%Jan 7, 2025Yield to maturity5.006%Jan 15, 2025Yield to maturity4.961%Jan 24, 2025Yield to maturity4.935%Feb 3, 2025Yield to maturity4.856%Feb 11, 2025Yield to maturity4.840%Feb 20, 2025Yield to maturity4.839%Feb 28, 2025Yield to maturity4.615%Mar 10, 2025Yield to maturity4.657%Mar 18, 2025Yield to maturity4.679%Mar 26, 2025Yield to maturity4.794%Apr 3, 2025Yield to maturity4.604%Apr 11, 2025Yield to maturity4.965%Apr 21, 2025Yield to maturity5.024%Apr 29, 2025Yield to maturity4.751%May 7, 2025Yield to maturity4.880%May 15, 2025Yield to maturity5.020%May 23, 2025Yield to maturity5.146%Jun 3, 2025Yield to maturity5.099%Jun 11, 2025Yield to maturity5.020%Jun 20, 2025Yield to maturity5.000%Jun 30, 2025Yield to maturity4.877%Jul 9, 2025Yield to maturity4.969%Jul 17, 2025Yield to maturity5.112%Jul 25, 2025Yield to maturity5.021%Aug 4, 2025Yield to maturity4.885%Aug 12, 2025Yield to maturity4.977%Aug 20, 2025Yield to maturity4.989%Aug 28, 2025Yield to maturity4.975%Sep 8, 2025Yield to maturity4.779%Sep 16, 2025Yield to maturity4.739%Sep 24, 2025Yield to maturity4.850%Oct 2, 2025Yield to maturity4.785%Oct 10, 2025Yield to maturity4.715%Oct 21, 2025Yield to maturity4.634%Oct 29, 2025Yield to maturity4.695%Nov 6, 2025Yield to maturity4.780%Nov 17, 2025Yield to maturity4.835%Nov 25, 2025Yield to maturity4.772%Dec 4, 2025Yield to maturity4.866%Dec 12, 2025Yield to maturity4.962%Dec 22, 2025Yield to maturity4.945%Dec 31, 2025Yield to maturity4.954%Jan 9, 2026Yield to maturity4.925%Jan 20, 2026Yield to maturity5.015%Jan 28, 2026Yield to maturity4.957%Feb 5, 2026Yield to maturity4.956%Feb 13, 2026Yield to maturity4.797%Feb 24, 2026Yield to maturity4.799%Mar 4, 2026Yield to maturity4.822%Mar 12, 2026Yield to maturity4.990%Mar 20, 2026Yield to maturity5.079%Mar 30, 2026Yield to maturity5.020%Apr 7, 2026Yield to maturity5.015%Apr 15, 2026Yield to maturity5.001%Apr 23, 2026Yield to maturity5.029%May 1, 2026Yield to maturity5.077%May 11, 2026Yield to maturity5.092%May 19, 2026Yield to maturity5.287%May 28, 2026Yield to maturity5.093%Jun 5, 2026Yield to maturity5.115%Jun 15, 2026Yield to maturity5.078%Jun 24, 2026Yield to maturity4.964%Jul 2, 2026Yield to maturity5.092%Jul 13, 2026Yield to maturity5.210%Jul 21, 2026Yield to maturity5.239%Jul 29, 2026Yield to maturity5.316%Aug 6, 2026Yield to maturity5.329%Aug 14, 2026Yield to maturity5.373%Aug 24, 2026Yield to maturity5.330%Sep 1, 2026Yield to maturity5.370%Sep 9, 2026Yield to maturity5.376%

Price history

1,206 trading days to Sep 9, 2026

5060708090100110Nov 15, 2021Sep 9, 2026Nov 15, 2021Close96.969Nov 23, 2021Close96.656Dec 2, 2021Close102.625Dec 10, 2021Close99.875Dec 20, 2021Close100.469Dec 29, 2021Close98.125Jan 6, 2022Close95.250Jan 14, 2022Close94.531Jan 25, 2022Close94.563Feb 2, 2022Close94.688Feb 10, 2022Close90.625Feb 18, 2022Close91.656Mar 1, 2022Close94.594Mar 9, 2022Close90.719Mar 17, 2022Close86.781Mar 25, 2022Close84.938Apr 4, 2022Close87.094Apr 12, 2022Close80.938Apr 21, 2022Close79.000Apr 29, 2022Close78.750May 9, 2022Close74.938May 17, 2022Close74.625May 25, 2022Close77.813Jun 3, 2022Close75.625Jun 13, 2022Close71.094Jun 22, 2022Close73.781Jun 30, 2022Close75.531Jul 11, 2022Close74.875Jul 19, 2022Close74.938Jul 27, 2022Close77.063Aug 4, 2022Close78.125Aug 12, 2022Close75.313Aug 22, 2022Close73.313Aug 30, 2022Close73.625Sep 8, 2022Close70.281Sep 16, 2022Close69.375Sep 26, 2022Close66.969Oct 4, 2022Close67.156Oct 13, 2022Close63.688Oct 21, 2022Close59.313Oct 31, 2022Close60.563Nov 8, 2022Close60.125Nov 17, 2022Close64.188Nov 28, 2022Close66.188Dec 6, 2022Close69.406Dec 14, 2022Close69.563Dec 22, 2022Close66.594Jan 3, 2023Close64.719Jan 11, 2023Close67.625Jan 20, 2023Close68.000Jan 30, 2023Close68.063Feb 7, 2023Close67.219Feb 15, 2023Close65.719Feb 24, 2023Close64.625Mar 6, 2023Close65.000Mar 14, 2023Close66.688Mar 22, 2023Close67.938Mar 30, 2023Close67.063Apr 7, 2023Close68.750Apr 17, 2023Close66.219Apr 25, 2023Close68.406May 3, 2023Close67.688May 11, 2023Close67.063May 19, 2023Close64.313May 30, 2023Close64.938Jun 7, 2023Close64.469Jun 15, 2023Close65.844Jun 26, 2023Close66.156Jul 5, 2023Close64.719Jul 13, 2023Close65.375Jul 21, 2023Close65.219Jul 31, 2023Close63.813Aug 8, 2023Close61.625Aug 16, 2023Close59.438Aug 24, 2023Close60.313Sep 1, 2023Close60.375Sep 12, 2023Close59.719Sep 20, 2023Close59.125Sep 28, 2023Close55.625Oct 6, 2023Close53.344Oct 17, 2023Close53.469Oct 25, 2023Close52.031Nov 2, 2023Close54.688Nov 10, 2023Close55.469Nov 20, 2023Close57.156Nov 29, 2023Close58.688Dec 7, 2023Close60.844Dec 15, 2023Close63.719Dec 26, 2023Close63.094Jan 4, 2024Close62.063Jan 12, 2024Close61.188Jan 23, 2024Close59.125Jan 31, 2024Close60.906Feb 8, 2024Close59.344Feb 16, 2024Close58.500Feb 27, 2024Close58.656Mar 6, 2024Close61.000Mar 14, 2024Close58.781Mar 22, 2024Close59.375Apr 1, 2024Close58.531Apr 9, 2024Close58.344Apr 17, 2024Close56.125Apr 25, 2024Close55.094May 3, 2024Close56.656May 13, 2024Close56.969May 21, 2024Close57.781May 30, 2024Close56.469Jun 7, 2024Close57.938Jun 17, 2024Close59.469Jun 26, 2024Close59.063Jul 5, 2024Close58.688Jul 15, 2024Close58.813Jul 23, 2024Close58.531Jul 31, 2024Close59.844Aug 8, 2024Close60.406Aug 16, 2024Close61.938Aug 26, 2024Close62.563Sep 4, 2024Close63.156Sep 12, 2024Close63.906Sep 20, 2024Close63.063Sep 30, 2024Close62.156Oct 8, 2024Close60.031Oct 17, 2024Close59.375Oct 25, 2024Close58.125Nov 4, 2024Close58.375Nov 13, 2024Close56.688Nov 21, 2024Close56.875Dec 2, 2024Close59.750Dec 10, 2024Close59.156Dec 18, 2024Close56.625Dec 27, 2024Close54.906Jan 7, 2025Close54.031Jan 15, 2025Close54.500Jan 24, 2025Close54.781Feb 3, 2025Close55.594Feb 11, 2025Close55.781Feb 20, 2025Close55.813Feb 28, 2025Close58.188Mar 10, 2025Close57.750Mar 18, 2025Close57.531Mar 26, 2025Close56.344Apr 3, 2025Close58.375Apr 11, 2025Close54.656Apr 21, 2025Close54.094Apr 29, 2025Close56.875May 7, 2025Close55.563May 15, 2025Close54.188May 23, 2025Close53.000Jun 3, 2025Close53.469Jun 11, 2025Close54.250Jun 20, 2025Close54.469Jun 30, 2025Close55.719Jul 9, 2025Close54.813Jul 17, 2025Close53.438Jul 25, 2025Close54.344Aug 4, 2025Close55.719Aug 12, 2025Close54.813Aug 20, 2025Close54.719Aug 28, 2025Close54.875Sep 8, 2025Close56.875Sep 16, 2025Close57.313Sep 24, 2025Close56.188Oct 2, 2025Close56.875Oct 10, 2025Close57.625Oct 21, 2025Close58.500Oct 29, 2025Close57.875Nov 6, 2025Close57.000Nov 17, 2025Close56.469Nov 25, 2025Close57.125Dec 4, 2025Close56.188Dec 12, 2025Close55.250Dec 22, 2025Close55.438Dec 31, 2025Close55.375Jan 9, 2026Close55.688Jan 20, 2026Close54.813Jan 28, 2026Close55.406Feb 5, 2026Close55.438Feb 13, 2026Close57.063Feb 24, 2026Close57.063Mar 4, 2026Close56.844Mar 12, 2026Close55.188Mar 20, 2026Close54.344Mar 30, 2026Close54.938Apr 7, 2026Close55.000Apr 15, 2026Close55.156Apr 23, 2026Close54.906May 1, 2026Close54.469May 11, 2026Close54.344May 19, 2026Close52.531May 28, 2026Close54.375Jun 5, 2026Close54.188Jun 15, 2026Close54.563Jun 24, 2026Close55.688Jul 2, 2026Close54.469Jul 13, 2026Close53.375Jul 21, 2026Close53.125Jul 29, 2026Close52.438Aug 6, 2026Close52.344Aug 14, 2026Close51.969Aug 24, 2026Close52.375Sep 1, 2026Close52.031Sep 9, 2026Close52.000
The most recent 20 trading days of prices for 912810TB4.
DateBidOfferClose
Sep 9, 202651.84451.81352.000
Sep 8, 202652.32852.31352.219
Sep 4, 202652.32852.31352.281
Sep 3, 202652.39152.37552.219
Sep 2, 202652.04752.03152.031
Sep 1, 202652.28152.25052.031
Aug 31, 202652.10952.09452.219
Aug 28, 202652.84452.81352.531
Aug 27, 202652.87552.84452.719
Aug 26, 202652.85952.84452.813
Aug 25, 202652.87552.84452.938
Aug 24, 202652.53152.50052.375
Aug 21, 202652.04752.03151.938
Aug 20, 202652.17252.15652.313
Aug 19, 202652.53152.50052.594
Aug 18, 202651.60951.59451.688
Aug 17, 202651.75051.71951.500
Aug 14, 202651.92251.90651.969
Aug 13, 202652.39152.37552.375
Aug 12, 202652.23452.21952.063

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 912810TB4.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Nov 10, 2021Nov 15, 2021New issue$25.0bn$39.5bn2.20x1.940%
Dec 9, 2021Dec 15, 2021Reopening$22.0bn$25.2bn2.22x1.895%
Jan 13, 2022Jan 18, 2022Reopening$22.0bn$25.5bn2.35x2.075%

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.