Treasury bond

912810SU3 · 1.875% due February 15, 2051

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

Statement of October 31, 2026

Amount outstanding
$86.26bn
Held stripped
$16.57bn
Share stripped
19.21%

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, November 9, 2026

Yield to maturity
5.373%
Modified duration
16.786 yr
DV01
0.0895
Convexity
3.61
Dirty price
53.318

Where its rate sensitivity sits

<.01
0.01
0.03
0.06
0.15
0.28
0.46
0.88
1.20
3.00
10.96
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 11 of twelve buckets, summing to 17.028 years against a modified duration of 16.786.

Against the fitted curve

Priced 2.5 bp rich to the curve on that day, 22.51 cents per 100 of face.

That is -0.97 standard deviations from its own typical residual.

Yield to maturity, 1,435 observations

1%2%3%4%5%6%Feb 16, 2021Nov 9, 2026Feb 16, 2021Yield to maturity2.085%Feb 24, 2021Yield to maturity2.237%Mar 4, 2021Yield to maturity2.298%Mar 12, 2021Yield to maturity2.397%Mar 22, 2021Yield to maturity2.376%Mar 30, 2021Yield to maturity2.383%Apr 7, 2021Yield to maturity2.355%Apr 15, 2021Yield to maturity2.226%Apr 23, 2021Yield to maturity2.249%May 3, 2021Yield to maturity2.295%May 11, 2021Yield to maturity2.351%May 19, 2021Yield to maturity2.393%May 27, 2021Yield to maturity2.301%Jun 7, 2021Yield to maturity2.261%Jun 15, 2021Yield to maturity2.211%Jun 23, 2021Yield to maturity2.126%Jul 1, 2021Yield to maturity2.088%Jul 12, 2021Yield to maturity2.016%Jul 20, 2021Yield to maturity1.890%Jul 28, 2021Yield to maturity1.919%Aug 5, 2021Yield to maturity1.875%Aug 13, 2021Yield to maturity1.951%Aug 23, 2021Yield to maturity1.879%Aug 31, 2021Yield to maturity1.931%Sep 9, 2021Yield to maturity1.906%Sep 17, 2021Yield to maturity1.914%Sep 27, 2021Yield to maturity1.999%Oct 5, 2021Yield to maturity2.107%Oct 14, 2021Yield to maturity2.024%Oct 22, 2021Yield to maturity2.090%Nov 1, 2021Yield to maturity1.989%Nov 9, 2021Yield to maturity1.839%Nov 18, 2021Yield to maturity1.988%Nov 29, 2021Yield to maturity1.882%Dec 7, 2021Yield to maturity1.814%Dec 15, 2021Yield to maturity1.881%Dec 23, 2021Yield to maturity1.924%Jan 3, 2022Yield to maturity2.031%Jan 11, 2022Yield to maturity2.091%Jan 20, 2022Yield to maturity2.149%Jan 28, 2022Yield to maturity2.087%Feb 7, 2022Yield to maturity2.230%Feb 15, 2022Yield to maturity2.398%Feb 24, 2022Yield to maturity2.310%Mar 4, 2022Yield to maturity2.197%Mar 14, 2022Yield to maturity2.520%Mar 22, 2022Yield to maturity2.637%Mar 30, 2022Yield to maturity2.516%Apr 7, 2022Yield to maturity2.728%Apr 18, 2022Yield to maturity2.986%Apr 26, 2022Yield to maturity2.892%May 4, 2022Yield to maturity3.039%May 12, 2022Yield to maturity3.062%May 20, 2022Yield to maturity3.061%May 31, 2022Yield to maturity3.140%Jun 8, 2022Yield to maturity3.248%Jun 16, 2022Yield to maturity3.406%Jun 27, 2022Yield to maturity3.365%Jul 6, 2022Yield to maturity3.189%Jul 14, 2022Yield to maturity3.159%Jul 22, 2022Yield to maturity3.055%Aug 1, 2022Yield to maturity2.983%Aug 9, 2022Yield to maturity3.068%Aug 17, 2022Yield to maturity3.225%Aug 25, 2022Yield to maturity3.330%Sep 2, 2022Yield to maturity3.429%Sep 13, 2022Yield to maturity3.580%Sep 21, 2022Yield to maturity3.572%Sep 29, 2022Yield to maturity3.777%Oct 7, 2022Yield to maturity3.920%Oct 18, 2022Yield to maturity4.099%Oct 26, 2022Yield to maturity4.241%Nov 3, 2022Yield to maturity4.216%Nov 14, 2022Yield to maturity4.156%Nov 22, 2022Yield to maturity3.933%Dec 1, 2022Yield to maturity3.725%Dec 9, 2022Yield to maturity3.628%Dec 19, 2022Yield to maturity3.690%Dec 28, 2022Yield to maturity4.049%Jan 6, 2023Yield to maturity3.737%Jan 17, 2023Yield to maturity3.694%Jan 25, 2023Yield to maturity3.663%Feb 2, 2023Yield to maturity3.592%Feb 10, 2023Yield to maturity3.856%Feb 21, 2023Yield to maturity4.013%Mar 1, 2023Yield to maturity3.992%Mar 9, 2023Yield to maturity3.910%Mar 17, 2023Yield to maturity3.645%Mar 27, 2023Yield to maturity3.810%Apr 4, 2023Yield to maturity3.640%Apr 12, 2023Yield to maturity3.687%Apr 20, 2023Yield to maturity3.781%Apr 28, 2023Yield to maturity3.701%May 8, 2023Yield to maturity3.873%May 16, 2023Yield to maturity3.915%May 24, 2023Yield to maturity4.015%Jun 2, 2023Yield to maturity3.928%Jun 12, 2023Yield to maturity3.917%Jun 21, 2023Yield to maturity3.841%Jun 29, 2023Yield to maturity3.946%Jul 10, 2023Yield to maturity4.072%Jul 18, 2023Yield to maturity3.947%Jul 26, 2023Yield to maturity3.970%Aug 3, 2023Yield to maturity4.350%Aug 11, 2023Yield to maturity4.325%Aug 21, 2023Yield to maturity4.505%Aug 29, 2023Yield to maturity4.277%Sep 7, 2023Yield to maturity4.411%Sep 15, 2023Yield to maturity4.471%Sep 25, 2023Yield to maturity4.728%Oct 3, 2023Yield to maturity5.009%Oct 12, 2023Yield to maturity4.923%Oct 20, 2023Yield to maturity5.151%Oct 30, 2023Yield to maturity5.095%Nov 7, 2023Yield to maturity4.803%Nov 15, 2023Yield to maturity4.750%Nov 24, 2023Yield to maturity4.676%Dec 4, 2023Yield to maturity4.511%Dec 12, 2023Yield to maturity4.379%Dec 20, 2023Yield to maturity4.083%Dec 29, 2023Yield to maturity4.118%Jan 9, 2024Yield to maturity4.271%Jan 18, 2024Yield to maturity4.474%Jan 26, 2024Yield to maturity4.479%Feb 5, 2024Yield to maturity4.442%Feb 13, 2024Yield to maturity4.547%Feb 22, 2024Yield to maturity4.557%Mar 1, 2024Yield to maturity4.411%Mar 11, 2024Yield to maturity4.344%Mar 19, 2024Yield to maturity4.514%Mar 27, 2024Yield to maturity4.423%Apr 5, 2024Yield to maturity4.606%Apr 15, 2024Yield to maturity4.794%Apr 23, 2024Yield to maturity4.784%May 1, 2024Yield to maturity4.791%May 9, 2024Yield to maturity4.665%May 17, 2024Yield to maturity4.626%May 28, 2024Yield to maturity4.716%Jun 5, 2024Yield to maturity4.504%Jun 13, 2024Yield to maturity4.463%Jun 24, 2024Yield to maturity4.443%Jul 2, 2024Yield to maturity4.671%Jul 11, 2024Yield to maturity4.483%Jul 19, 2024Yield to maturity4.533%Jul 29, 2024Yield to maturity4.506%Aug 6, 2024Yield to maturity4.279%Aug 14, 2024Yield to maturity4.230%Aug 22, 2024Yield to maturity4.247%Aug 30, 2024Yield to maturity4.306%Sep 10, 2024Yield to maturity4.068%Sep 18, 2024Yield to maturity4.134%Sep 26, 2024Yield to maturity4.238%Oct 4, 2024Yield to maturity4.391%Oct 15, 2024Yield to maturity4.423%Oct 23, 2024Yield to maturity4.609%Oct 31, 2024Yield to maturity4.565%Nov 8, 2024Yield to maturity4.587%Nov 19, 2024Yield to maturity4.694%Nov 27, 2024Yield to maturity4.550%Dec 6, 2024Yield to maturity4.453%Dec 16, 2024Yield to maturity4.718%Dec 24, 2024Yield to maturity4.890%Jan 3, 2025Yield to maturity4.930%Jan 13, 2025Yield to maturity5.069%Jan 22, 2025Yield to maturity4.915%Jan 30, 2025Yield to maturity4.864%Feb 7, 2025Yield to maturity4.799%Feb 18, 2025Yield to maturity4.881%Feb 26, 2025Yield to maturity4.618%Mar 6, 2025Yield to maturity4.711%Mar 14, 2025Yield to maturity4.740%Mar 24, 2025Yield to maturity4.778%Apr 1, 2025Yield to maturity4.640%Apr 9, 2025Yield to maturity4.855%Apr 17, 2025Yield to maturity4.929%Apr 28, 2025Yield to maturity4.814%May 6, 2025Yield to maturity4.936%May 14, 2025Yield to maturity5.095%May 22, 2025Yield to maturity5.169%Jun 2, 2025Yield to maturity5.113%Jun 10, 2025Yield to maturity5.050%Jun 18, 2025Yield to maturity5.001%Jun 27, 2025Yield to maturity4.959%Jul 8, 2025Yield to maturity5.051%Jul 16, 2025Yield to maturity5.118%Jul 24, 2025Yield to maturity5.058%Aug 1, 2025Yield to maturity4.905%Aug 11, 2025Yield to maturity4.941%Aug 19, 2025Yield to maturity5.003%Aug 27, 2025Yield to maturity5.021%Sep 5, 2025Yield to maturity4.872%Sep 15, 2025Yield to maturity4.755%Sep 23, 2025Yield to maturity4.830%Oct 1, 2025Yield to maturity4.816%Oct 9, 2025Yield to maturity4.821%Oct 20, 2025Yield to maturity4.673%Oct 28, 2025Yield to maturity4.645%Nov 5, 2025Yield to maturity4.840%Nov 14, 2025Yield to maturity4.858%Nov 24, 2025Yield to maturity4.789%Dec 3, 2025Yield to maturity4.834%Dec 11, 2025Yield to maturity4.901%Dec 19, 2025Yield to maturity4.941%Dec 30, 2025Yield to maturity4.925%Jan 8, 2026Yield to maturity4.968%Jan 16, 2026Yield to maturity4.936%Jan 27, 2026Yield to maturity4.938%Feb 4, 2026Yield to maturity5.023%Feb 12, 2026Yield to maturity4.829%Feb 23, 2026Yield to maturity4.807%Mar 3, 2026Yield to maturity4.806%Mar 11, 2026Yield to maturity4.974%Mar 19, 2026Yield to maturity4.950%Mar 27, 2026Yield to maturity5.108%Apr 6, 2026Yield to maturity5.006%Apr 14, 2026Yield to maturity4.982%Apr 22, 2026Yield to maturity5.010%Apr 30, 2026Yield to maturity5.097%May 8, 2026Yield to maturity5.060%May 18, 2026Yield to maturity5.251%May 27, 2026Yield to maturity5.127%Jun 4, 2026Yield to maturity5.089%Jun 12, 2026Yield to maturity5.086%Jun 23, 2026Yield to maturity5.055%Jul 1, 2026Yield to maturity5.080%Jul 10, 2026Yield to maturity5.179%Jul 20, 2026Yield to maturity5.222%Jul 28, 2026Yield to maturity5.207%Aug 5, 2026Yield to maturity5.291%Aug 13, 2026Yield to maturity5.328%Aug 21, 2026Yield to maturity5.379%Aug 31, 2026Yield to maturity5.353%Sep 9, 2026Yield to maturity5.380%Sep 17, 2026Yield to maturity5.386%Sep 25, 2026Yield to maturity5.604%Oct 5, 2026Yield to maturity5.771%Oct 14, 2026Yield to maturity5.631%Oct 22, 2026Yield to maturity5.393%Oct 30, 2026Yield to maturity5.427%Nov 9, 2026Yield to maturity5.373%

Price history

1,435 trading days to Nov 9, 2026

405060708090100110Feb 16, 2021Nov 9, 2026Feb 16, 2021Close95.344Feb 24, 2021Close92.125Mar 4, 2021Close90.875Mar 12, 2021Close88.906Mar 22, 2021Close89.313Mar 30, 2021Close89.188Apr 7, 2021Close89.750Apr 15, 2021Close92.375Apr 23, 2021Close91.906May 3, 2021Close90.969May 11, 2021Close89.844May 19, 2021Close89.031May 27, 2021Close90.875Jun 7, 2021Close91.688Jun 15, 2021Close92.719Jun 23, 2021Close94.500Jul 1, 2021Close95.313Jul 12, 2021Close96.875Jul 20, 2021Close99.656Jul 28, 2021Close99.000Aug 5, 2021Close100.000Aug 13, 2021Close98.313Aug 23, 2021Close99.906Aug 31, 2021Close98.750Sep 9, 2021Close99.313Sep 17, 2021Close99.125Sep 27, 2021Close97.250Oct 5, 2021Close94.938Oct 14, 2021Close96.719Oct 22, 2021Close95.313Nov 1, 2021Close97.469Nov 9, 2021Close100.813Nov 18, 2021Close97.500Nov 29, 2021Close99.844Dec 7, 2021Close101.375Dec 15, 2021Close99.875Dec 23, 2021Close98.906Jan 3, 2022Close96.594Jan 11, 2022Close95.313Jan 20, 2022Close94.094Jan 28, 2022Close95.406Feb 7, 2022Close92.438Feb 15, 2022Close89.125Feb 24, 2022Close90.844Mar 4, 2022Close93.125Mar 14, 2022Close86.813Mar 22, 2022Close84.656Mar 30, 2022Close86.906Apr 7, 2022Close83.031Apr 18, 2022Close78.625Apr 26, 2022Close80.219May 4, 2022Close77.781May 12, 2022Close77.406May 20, 2022Close77.438May 31, 2022Close76.188Jun 8, 2022Close74.500Jun 16, 2022Close72.125Jun 27, 2022Close72.750Jul 6, 2022Close75.469Jul 14, 2022Close75.938Jul 22, 2022Close77.625Aug 1, 2022Close78.813Aug 9, 2022Close77.438Aug 17, 2022Close74.969Aug 25, 2022Close73.375Sep 2, 2022Close71.906Sep 13, 2022Close69.750Sep 21, 2022Close69.875Sep 29, 2022Close67.063Oct 7, 2022Close65.188Oct 18, 2022Close62.938Oct 26, 2022Close61.219Nov 3, 2022Close61.531Nov 14, 2022Close62.281Nov 22, 2022Close65.094Dec 1, 2022Close67.875Dec 9, 2022Close69.219Dec 19, 2022Close68.375Dec 28, 2022Close63.688Jan 6, 2023Close67.781Jan 17, 2023Close68.375Jan 25, 2023Close68.813Feb 2, 2023Close69.813Feb 10, 2023Close66.250Feb 21, 2023Close64.250Mar 1, 2023Close64.531Mar 9, 2023Close65.594Mar 17, 2023Close69.156Mar 27, 2023Close66.938Apr 4, 2023Close69.250Apr 12, 2023Close68.625Apr 20, 2023Close67.375Apr 28, 2023Close68.469May 8, 2023Close66.188May 16, 2023Close65.656May 24, 2023Close64.406Jun 2, 2023Close65.531Jun 12, 2023Close65.688Jun 21, 2023Close66.688Jun 29, 2023Close65.344Jul 10, 2023Close63.781Jul 18, 2023Close65.375Jul 26, 2023Close65.094Aug 3, 2023Close60.500Aug 11, 2023Close60.813Aug 21, 2023Close58.781Aug 29, 2023Close61.406Sep 7, 2023Close59.875Sep 15, 2023Close59.219Sep 25, 2023Close56.438Oct 3, 2023Close53.594Oct 12, 2023Close54.469Oct 20, 2023Close52.250Oct 30, 2023Close52.813Nov 7, 2023Close55.750Nov 15, 2023Close56.313Nov 24, 2023Close57.125Dec 4, 2023Close58.938Dec 12, 2023Close60.438Dec 20, 2023Close63.969Dec 29, 2023Close63.563Jan 9, 2024Close61.750Jan 18, 2024Close59.438Jan 26, 2024Close59.406Feb 5, 2024Close59.844Feb 13, 2024Close58.688Feb 22, 2024Close58.594Mar 1, 2024Close60.250Mar 11, 2024Close61.031Mar 19, 2024Close59.125Mar 27, 2024Close60.156Apr 5, 2024Close58.156Apr 15, 2024Close56.188Apr 23, 2024Close56.313May 1, 2024Close56.250May 9, 2024Close57.594May 17, 2024Close58.031May 28, 2024Close57.094Jun 5, 2024Close59.406Jun 13, 2024Close59.875Jun 24, 2024Close60.125Jul 2, 2024Close57.656Jul 11, 2024Close59.719Jul 19, 2024Close59.188Jul 29, 2024Close59.500Aug 6, 2024Close62.094Aug 14, 2024Close62.688Aug 22, 2024Close62.500Aug 30, 2024Close61.844Sep 10, 2024Close64.688Sep 18, 2024Close63.906Sep 26, 2024Close62.688Oct 4, 2024Close60.938Oct 15, 2024Close60.594Oct 23, 2024Close58.563Oct 31, 2024Close59.063Nov 8, 2024Close58.844Nov 19, 2024Close57.719Nov 27, 2024Close59.281Dec 6, 2024Close60.375Dec 16, 2024Close57.531Dec 24, 2024Close55.781Jan 3, 2025Close55.406Jan 13, 2025Close54.063Jan 22, 2025Close55.594Jan 30, 2025Close56.125Feb 7, 2025Close56.813Feb 18, 2025Close56.000Feb 26, 2025Close58.750Mar 6, 2025Close57.781Mar 14, 2025Close57.500Mar 24, 2025Close57.125Apr 1, 2025Close58.594Apr 9, 2025Close56.375Apr 17, 2025Close55.656Apr 28, 2025Close56.844May 6, 2025Close55.625May 14, 2025Close54.094May 22, 2025Close53.406Jun 2, 2025Close53.969Jun 10, 2025Close54.594Jun 18, 2025Close55.094Jun 27, 2025Close55.531Jul 8, 2025Close54.656Jul 16, 2025Close54.031Jul 24, 2025Close54.625Aug 1, 2025Close56.156Aug 11, 2025Close55.813Aug 19, 2025Close55.219Aug 27, 2025Close55.063Sep 5, 2025Close56.563Sep 15, 2025Close57.781Sep 23, 2025Close57.031Oct 1, 2025Close57.188Oct 9, 2025Close57.156Oct 20, 2025Close58.719Oct 28, 2025Close59.031Nov 5, 2025Close57.031Nov 14, 2025Close56.875Nov 24, 2025Close57.594Dec 3, 2025Close57.156Dec 11, 2025Close56.500Dec 19, 2025Close56.125Dec 30, 2025Close56.313Jan 8, 2026Close55.906Jan 16, 2026Close56.250Jan 27, 2026Close56.250Feb 4, 2026Close55.438Feb 12, 2026Close57.375Feb 23, 2026Close57.625Mar 3, 2026Close57.656Mar 11, 2026Close56.000Mar 19, 2026Close56.250Mar 27, 2026Close54.750Apr 6, 2026Close55.750Apr 14, 2026Close56.000Apr 22, 2026Close55.750Apr 30, 2026Close54.938May 8, 2026Close55.313May 18, 2026Close53.531May 27, 2026Close54.719Jun 4, 2026Close55.094Jun 12, 2026Close55.156Jun 23, 2026Close55.469Jul 1, 2026Close55.250Jul 10, 2026Close54.344Jul 20, 2026Close53.969Jul 28, 2026Close54.125Aug 5, 2026Close53.375Aug 13, 2026Close53.063Aug 21, 2026Close52.625Aug 31, 2026Close52.875Sep 9, 2026Close52.656Sep 17, 2026Close52.625Sep 25, 2026Close50.750Oct 5, 2026Close49.375Oct 14, 2026Close50.563Oct 22, 2026Close52.656Oct 30, 2026Close52.375Nov 9, 2026Close52.875
The most recent 20 trading days of prices for 912810SU3.
DateBidOfferClose
Nov 9, 202652.87552.90652.875
Nov 6, 202652.96952.98452.906
Nov 5, 202652.93852.98452.969
Nov 4, 202652.50052.53152.719
Nov 3, 202652.46952.51652.375
Nov 2, 202652.96953.00052.719
Oct 30, 202652.37552.40652.375
Oct 29, 202652.37552.40652.375
Oct 28, 202652.28152.31351.844
Oct 27, 202652.50052.53152.531
Oct 26, 202652.46952.50052.438
Oct 23, 202652.40652.45352.313
Oct 22, 202652.28152.31352.656
Oct 21, 202651.56351.59451.469
Oct 20, 202651.43851.48451.438
Oct 19, 202651.12551.17250.938
Oct 16, 202651.53151.56351.438
Oct 15, 202651.40651.43851.375
Oct 14, 202650.18850.21950.563
Oct 13, 202650.25050.28150.250

Prices are per 100 of face, from Treasury's own end-of-day file. A dash means that side was not quoted that day, which is almost always the offer and almost always near maturity: a holder of a bill days from paying par has little reason to sell it.

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 912810SU3.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Feb 11, 2021Feb 16, 2021New issue$27.0bn$36.8bn2.18x1.933%
Mar 11, 2021Mar 15, 2021Reopening$24.0bn$25.5bn2.28x2.295%
Apr 13, 2021Apr 15, 2021Reopening$24.0bn$27.7bn2.47x2.320%

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.