Treasury bond

912810SA7 · 3% due February 15, 2048

Original term
30-Year
Maturity
Feb 15, 2048
Coupon
3.000%
Pays
Semi-Annual
Dated
Feb 15, 2018
First coupon
Aug 15, 2018
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$44.12bn
Held stripped
$10.46bn
Share stripped
23.71%

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
5.352%
Modified duration
14.275 yr
DV01
0.1005
Convexity
266.037
Dirty price
70.431

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 11 of twelve buckets, summing to 14.467 years against a modified duration of 14.275.

Against the fitted curve

Priced 0.0 bp rich to the curve on that day, 0.31 cents per 100 of face.

That is -0.63 standard deviations from its own typical residual.

Yield to maturity, 2,143 observations

1%2%3%4%5%6%Feb 15, 2018Sep 9, 2026Feb 15, 2018Yield to maturity3.150%Mar 1, 2018Yield to maturity3.090%Mar 14, 2018Yield to maturity3.054%Mar 27, 2018Yield to maturity3.025%Apr 10, 2018Yield to maturity3.019%Apr 23, 2018Yield to maturity3.148%May 4, 2018Yield to maturity3.116%May 17, 2018Yield to maturity3.248%May 31, 2018Yield to maturity2.998%Jun 13, 2018Yield to maturity3.105%Jun 26, 2018Yield to maturity3.029%Jul 10, 2018Yield to maturity2.966%Jul 23, 2018Yield to maturity3.102%Aug 3, 2018Yield to maturity3.094%Aug 16, 2018Yield to maturity3.032%Aug 29, 2018Yield to maturity3.024%Sep 12, 2018Yield to maturity3.109%Sep 25, 2018Yield to maturity3.228%Oct 9, 2018Yield to maturity3.371%Oct 22, 2018Yield to maturity3.389%Nov 2, 2018Yield to maturity3.462%Nov 16, 2018Yield to maturity3.338%Nov 30, 2018Yield to maturity3.310%Dec 14, 2018Yield to maturity3.150%Dec 28, 2018Yield to maturity3.042%Jan 11, 2019Yield to maturity3.049%Jan 25, 2019Yield to maturity3.070%Feb 7, 2019Yield to maturity3.000%Feb 21, 2019Yield to maturity3.051%Mar 6, 2019Yield to maturity3.070%Mar 19, 2019Yield to maturity3.024%Apr 1, 2019Yield to maturity2.889%Apr 12, 2019Yield to maturity2.977%Apr 26, 2019Yield to maturity2.927%May 9, 2019Yield to maturity2.873%May 22, 2019Yield to maturity2.820%Jun 5, 2019Yield to maturity2.637%Jun 18, 2019Yield to maturity2.555%Jul 1, 2019Yield to maturity2.558%Jul 15, 2019Yield to maturity2.610%Jul 26, 2019Yield to maturity2.597%Aug 8, 2019Yield to maturity2.235%Aug 21, 2019Yield to maturity2.067%Sep 4, 2019Yield to maturity1.961%Sep 17, 2019Yield to maturity2.265%Sep 30, 2019Yield to maturity2.119%Oct 11, 2019Yield to maturity2.214%Oct 25, 2019Yield to maturity2.288%Nov 7, 2019Yield to maturity2.393%Nov 21, 2019Yield to maturity2.238%Dec 5, 2019Yield to maturity2.246%Dec 18, 2019Yield to maturity2.354%Jan 2, 2020Yield to maturity2.332%Jan 15, 2020Yield to maturity2.230%Jan 29, 2020Yield to maturity2.053%Feb 11, 2020Yield to maturity2.054%Feb 25, 2020Yield to maturity1.800%Mar 9, 2020Yield to maturity1.051%Mar 20, 2020Yield to maturity1.652%Apr 2, 2020Yield to maturity1.269%Apr 16, 2020Yield to maturity1.196%Apr 29, 2020Yield to maturity1.245%May 12, 2020Yield to maturity1.377%May 26, 2020Yield to maturity1.408%Jun 8, 2020Yield to maturity1.622%Jun 19, 2020Yield to maturity1.441%Jul 2, 2020Yield to maturity1.405%Jul 16, 2020Yield to maturity1.280%Jul 29, 2020Yield to maturity1.214%Aug 11, 2020Yield to maturity1.286%Aug 24, 2020Yield to maturity1.322%Sep 4, 2020Yield to maturity1.423%Sep 18, 2020Yield to maturity1.407%Oct 1, 2020Yield to maturity1.404%Oct 15, 2020Yield to maturity1.461%Oct 28, 2020Yield to maturity1.502%Nov 10, 2020Yield to maturity1.680%Nov 24, 2020Yield to maturity1.540%Dec 8, 2020Yield to maturity1.600%Dec 21, 2020Yield to maturity1.610%Jan 5, 2021Yield to maturity1.631%Jan 19, 2021Yield to maturity1.772%Feb 1, 2021Yield to maturity1.782%Feb 12, 2021Yield to maturity1.950%Feb 26, 2021Yield to maturity2.149%Mar 11, 2021Yield to maturity2.250%Mar 24, 2021Yield to maturity2.289%Apr 6, 2021Yield to maturity2.297%Apr 19, 2021Yield to maturity2.260%Apr 30, 2021Yield to maturity2.280%May 13, 2021Yield to maturity2.377%May 26, 2021Yield to maturity2.254%Jun 9, 2021Yield to maturity2.156%Jun 22, 2021Yield to maturity2.096%Jul 6, 2021Yield to maturity1.986%Jul 19, 2021Yield to maturity1.801%Jul 30, 2021Yield to maturity1.876%Aug 12, 2021Yield to maturity1.993%Aug 25, 2021Yield to maturity1.935%Sep 8, 2021Yield to maturity1.932%Sep 21, 2021Yield to maturity1.838%Oct 4, 2021Yield to maturity2.037%Oct 18, 2021Yield to maturity2.006%Oct 29, 2021Yield to maturity1.933%Nov 12, 2021Yield to maturity1.950%Nov 26, 2021Yield to maturity1.835%Dec 9, 2021Yield to maturity1.876%Dec 22, 2021Yield to maturity1.867%Jan 5, 2022Yield to maturity2.111%Jan 19, 2022Yield to maturity2.165%Feb 1, 2022Yield to maturity2.154%Feb 14, 2022Yield to maturity2.342%Feb 28, 2022Yield to maturity2.231%Mar 11, 2022Yield to maturity2.412%Mar 24, 2022Yield to maturity2.570%Apr 6, 2022Yield to maturity2.716%Apr 20, 2022Yield to maturity2.993%May 3, 2022Yield to maturity3.146%May 16, 2022Yield to maturity3.248%May 27, 2022Yield to maturity3.139%Jun 10, 2022Yield to maturity3.367%Jun 24, 2022Yield to maturity3.435%Jul 8, 2022Yield to maturity3.457%Jul 21, 2022Yield to maturity3.259%Aug 3, 2022Yield to maturity3.139%Aug 16, 2022Yield to maturity3.310%Aug 29, 2022Yield to maturity3.474%Sep 12, 2022Yield to maturity3.752%Sep 23, 2022Yield to maturity3.822%Oct 6, 2022Yield to maturity4.013%Oct 20, 2022Yield to maturity4.439%Nov 2, 2022Yield to maturity4.358%Nov 16, 2022Yield to maturity4.079%Nov 30, 2022Yield to maturity4.019%Dec 13, 2022Yield to maturity3.715%Dec 27, 2022Yield to maturity4.100%Jan 10, 2023Yield to maturity3.906%Jan 24, 2023Yield to maturity3.740%Feb 6, 2023Yield to maturity3.785%Feb 17, 2023Yield to maturity4.023%Mar 3, 2023Yield to maturity4.051%Mar 16, 2023Yield to maturity3.830%Mar 29, 2023Yield to maturity3.904%Apr 11, 2023Yield to maturity3.748%Apr 24, 2023Yield to maturity3.854%May 5, 2023Yield to maturity3.865%May 18, 2023Yield to maturity4.041%Jun 1, 2023Yield to maturity3.972%Jun 14, 2023Yield to maturity4.043%Jun 28, 2023Yield to maturity3.961%Jul 12, 2023Yield to maturity4.125%Jul 25, 2023Yield to maturity4.119%Aug 7, 2023Yield to maturity4.425%Aug 18, 2023Yield to maturity4.558%Aug 31, 2023Yield to maturity4.381%Sep 14, 2023Yield to maturity4.571%Sep 27, 2023Yield to maturity4.923%Oct 11, 2023Yield to maturity4.924%Oct 24, 2023Yield to maturity5.165%Nov 6, 2023Yield to maturity5.042%Nov 17, 2023Yield to maturity4.813%Dec 1, 2023Yield to maturity4.608%Dec 14, 2023Yield to maturity4.239%Dec 28, 2023Yield to maturity4.169%Jan 11, 2024Yield to maturity4.372%Jan 25, 2024Yield to maturity4.551%Feb 7, 2024Yield to maturity4.469%Feb 21, 2024Yield to maturity4.657%Mar 5, 2024Yield to maturity4.439%Mar 18, 2024Yield to maturity4.618%Mar 29, 2024Yield to maturity4.497%Apr 11, 2024Yield to maturity4.792%Apr 24, 2024Yield to maturity4.914%May 7, 2024Yield to maturity4.737%May 20, 2024Yield to maturity4.707%Jun 3, 2024Yield to maturity4.680%Jun 14, 2024Yield to maturity4.501%Jun 28, 2024Yield to maturity4.657%Jul 12, 2024Yield to maturity4.540%Jul 25, 2024Yield to maturity4.647%Aug 7, 2024Yield to maturity4.412%Aug 20, 2024Yield to maturity4.251%Sep 3, 2024Yield to maturity4.284%Sep 16, 2024Yield to maturity4.082%Sep 27, 2024Yield to maturity4.242%Oct 10, 2024Yield to maturity4.522%Oct 24, 2024Yield to maturity4.617%Nov 6, 2024Yield to maturity4.770%Nov 20, 2024Yield to maturity4.769%Dec 4, 2024Yield to maturity4.529%Dec 17, 2024Yield to maturity4.751%Dec 31, 2024Yield to maturity4.940%Jan 14, 2025Yield to maturity5.118%Jan 28, 2025Yield to maturity4.916%Feb 10, 2025Yield to maturity4.838%Feb 24, 2025Yield to maturity4.788%Mar 7, 2025Yield to maturity4.768%Mar 20, 2025Yield to maturity4.681%Apr 2, 2025Yield to maturity4.675%Apr 15, 2025Yield to maturity4.928%Apr 28, 2025Yield to maturity4.819%May 9, 2025Yield to maturity4.968%May 22, 2025Yield to maturity5.178%Jun 5, 2025Yield to maturity5.012%Jun 18, 2025Yield to maturity5.006%Jul 2, 2025Yield to maturity4.926%Jul 16, 2025Yield to maturity5.111%Jul 29, 2025Yield to maturity4.956%Aug 11, 2025Yield to maturity4.924%Aug 22, 2025Yield to maturity4.951%Sep 5, 2025Yield to maturity4.833%Sep 18, 2025Yield to maturity4.785%Oct 1, 2025Yield to maturity4.784%Oct 15, 2025Yield to maturity4.699%Oct 28, 2025Yield to maturity4.612%Nov 10, 2025Yield to maturity4.771%Nov 24, 2025Yield to maturity4.737%Dec 8, 2025Yield to maturity4.880%Dec 19, 2025Yield to maturity4.891%Jan 5, 2026Yield to maturity4.899%Jan 16, 2026Yield to maturity4.884%Jan 30, 2026Yield to maturity4.920%Feb 12, 2026Yield to maturity4.771%Feb 26, 2026Yield to maturity4.707%Mar 11, 2026Yield to maturity4.921%Mar 24, 2026Yield to maturity5.044%Apr 6, 2026Yield to maturity4.968%Apr 17, 2026Yield to maturity4.944%Apr 30, 2026Yield to maturity5.056%May 13, 2026Yield to maturity5.111%May 27, 2026Yield to maturity5.087%Jun 9, 2026Yield to maturity5.095%Jun 23, 2026Yield to maturity5.027%Jul 7, 2026Yield to maturity5.124%Jul 20, 2026Yield to maturity5.189%Jul 31, 2026Yield to maturity5.363%Aug 13, 2026Yield to maturity5.288%Aug 26, 2026Yield to maturity5.248%Sep 9, 2026Yield to maturity5.352%

Price history

2,143 trading days to Sep 9, 2026

6080100120140160Feb 15, 2018Sep 9, 2026Feb 15, 2018Close97.094Mar 1, 2018Close98.250Mar 14, 2018Close98.938Mar 27, 2018Close99.500Apr 10, 2018Close99.625Apr 23, 2018Close97.156May 4, 2018Close97.750May 17, 2018Close95.281May 31, 2018Close100.031Jun 13, 2018Close97.969Jun 26, 2018Close99.438Jul 10, 2018Close100.656Jul 23, 2018Close98.031Aug 3, 2018Close98.188Aug 16, 2018Close99.375Aug 29, 2018Close99.531Sep 12, 2018Close97.906Sep 25, 2018Close95.688Oct 9, 2018Close93.125Oct 22, 2018Close92.813Nov 2, 2018Close91.531Nov 16, 2018Close93.719Nov 30, 2018Close94.219Dec 14, 2018Close97.156Dec 28, 2018Close99.188Jan 11, 2019Close99.063Jan 25, 2019Close98.656Feb 7, 2019Close100.000Feb 21, 2019Close99.031Mar 6, 2019Close98.656Mar 19, 2019Close99.531Apr 1, 2019Close102.156Apr 12, 2019Close100.438Apr 26, 2019Close101.406May 9, 2019Close102.469May 22, 2019Close103.531Jun 5, 2019Close107.281Jun 18, 2019Close109.000Jul 1, 2019Close108.938Jul 15, 2019Close107.813Jul 26, 2019Close108.094Aug 8, 2019Close116.063Aug 21, 2019Close120.000Sep 4, 2019Close122.563Sep 17, 2019Close115.344Sep 30, 2019Close118.719Oct 11, 2019Close116.469Oct 25, 2019Close114.781Nov 7, 2019Close112.406Nov 21, 2019Close115.875Dec 5, 2019Close115.688Dec 18, 2019Close113.250Jan 2, 2020Close113.719Jan 15, 2020Close116.000Jan 29, 2020Close120.125Feb 11, 2020Close120.063Feb 25, 2020Close126.281Mar 9, 2020Close147.063Mar 20, 2020Close130.031Apr 2, 2020Close140.531Apr 16, 2020Close142.594Apr 29, 2020Close141.125May 12, 2020Close137.344May 26, 2020Close136.438Jun 8, 2020Close130.625Jun 19, 2020Close135.438Jul 2, 2020Close136.406Jul 16, 2020Close139.875Jul 29, 2020Close141.719Aug 11, 2020Close139.594Aug 24, 2020Close138.563Sep 4, 2020Close135.719Sep 18, 2020Close136.125Oct 1, 2020Close136.156Oct 15, 2020Close134.563Oct 28, 2020Close133.438Nov 10, 2020Close128.781Nov 24, 2020Close132.375Dec 8, 2020Close130.750Dec 21, 2020Close130.469Jan 5, 2021Close129.906Jan 19, 2021Close126.313Feb 1, 2021Close126.031Feb 12, 2021Close121.969Feb 26, 2021Close117.344Mar 11, 2021Close115.094Mar 24, 2021Close114.219Apr 6, 2021Close114.031Apr 19, 2021Close114.813Apr 30, 2021Close114.375May 13, 2021Close112.281May 26, 2021Close114.906Jun 9, 2021Close117.063Jun 22, 2021Close118.375Jul 6, 2021Close120.875Jul 19, 2021Close125.219Jul 30, 2021Close123.406Aug 12, 2021Close120.656Aug 25, 2021Close121.969Sep 8, 2021Close122.031Sep 21, 2021Close124.219Oct 4, 2021Close119.563Oct 18, 2021Close120.250Oct 29, 2021Close121.906Nov 12, 2021Close121.500Nov 26, 2021Close124.156Dec 9, 2021Close123.156Dec 22, 2021Close123.344Jan 5, 2022Close117.781Jan 19, 2022Close116.563Feb 1, 2022Close116.781Feb 14, 2022Close112.750Feb 28, 2022Close115.094Mar 11, 2022Close111.281Mar 24, 2022Close108.094Apr 6, 2022Close105.250Apr 20, 2022Close100.125May 3, 2022Close97.438May 16, 2022Close95.688May 27, 2022Close97.563Jun 10, 2022Close93.719Jun 24, 2022Close92.625Jul 8, 2022Close92.281Jul 21, 2022Close95.531Aug 3, 2022Close97.563Aug 16, 2022Close94.688Aug 29, 2022Close92.031Sep 12, 2022Close87.750Sep 23, 2022Close86.719Oct 6, 2022Close83.969Oct 20, 2022Close78.250Nov 2, 2022Close79.313Nov 16, 2022Close83.094Nov 30, 2022Close83.938Dec 13, 2022Close88.375Dec 27, 2022Close82.844Jan 10, 2023Close85.594Jan 24, 2023Close88.031Feb 6, 2023Close87.375Feb 17, 2023Close83.969Mar 3, 2023Close83.594Mar 16, 2023Close86.750Mar 29, 2023Close85.688Apr 11, 2023Close87.969Apr 24, 2023Close86.438May 5, 2023Close86.281May 18, 2023Close83.813Jun 1, 2023Close84.781Jun 14, 2023Close83.813Jun 28, 2023Close84.969Jul 12, 2023Close82.719Jul 25, 2023Close82.813Aug 7, 2023Close78.813Aug 18, 2023Close77.156Aug 31, 2023Close79.406Sep 14, 2023Close77.031Sep 27, 2023Close72.875Oct 11, 2023Close72.875Oct 24, 2023Close70.219Nov 6, 2023Close71.594Nov 17, 2023Close74.219Dec 1, 2023Close76.688Dec 14, 2023Close81.375Dec 28, 2023Close82.313Jan 11, 2024Close79.688Jan 25, 2024Close77.469Feb 7, 2024Close78.500Feb 21, 2024Close76.219Mar 5, 2024Close78.906Mar 18, 2024Close76.719Mar 29, 2024Close78.219Apr 11, 2024Close74.688Apr 24, 2024Close73.313May 7, 2024Close75.375May 20, 2024Close75.750Jun 3, 2024Close76.094Jun 14, 2024Close78.281Jun 28, 2024Close76.406Jul 12, 2024Close77.844Jul 25, 2024Close76.563Aug 7, 2024Close79.469Aug 20, 2024Close81.531Sep 3, 2024Close81.125Sep 16, 2024Close83.781Sep 27, 2024Close81.688Oct 10, 2024Close78.188Oct 24, 2024Close77.063Nov 6, 2024Close75.281Nov 20, 2024Close75.313Dec 4, 2024Close78.188Dec 17, 2024Close75.563Dec 31, 2024Close73.438Jan 14, 2025Close71.500Jan 28, 2025Close73.750Feb 10, 2025Close74.656Feb 24, 2025Close75.250Mar 7, 2025Close75.500Mar 20, 2025Close76.531Apr 2, 2025Close76.625Apr 15, 2025Close73.750Apr 28, 2025Close75.000May 9, 2025Close73.344May 22, 2025Close71.094Jun 5, 2025Close72.906Jun 18, 2025Close73.000Jul 2, 2025Close73.906Jul 16, 2025Close71.906Jul 29, 2025Close73.625Aug 11, 2025Close74.000Aug 22, 2025Close73.719Sep 5, 2025Close75.063Sep 18, 2025Close75.625Oct 1, 2025Close75.656Oct 15, 2025Close76.656Oct 28, 2025Close77.688Nov 10, 2025Close75.875Nov 24, 2025Close76.281Dec 8, 2025Close74.688Dec 19, 2025Close74.594Jan 5, 2026Close74.531Jan 16, 2026Close74.719Jan 30, 2026Close74.344Feb 12, 2026Close76.031Feb 26, 2026Close76.781Mar 11, 2026Close74.406Mar 24, 2026Close73.094Apr 6, 2026Close73.938Apr 17, 2026Close74.219Apr 30, 2026Close73.031May 13, 2026Close72.469May 27, 2026Close72.750Jun 9, 2026Close72.688Jun 23, 2026Close73.438Jul 7, 2026Close72.438Jul 20, 2026Close71.781Jul 31, 2026Close70.031Aug 13, 2026Close70.813Aug 26, 2026Close71.250Sep 9, 2026Close70.219
The most recent 20 trading days of prices for 912810SA7.
DateBidOfferClose
Sep 9, 202670.03170.00070.219
Sep 8, 202670.59470.56370.438
Sep 4, 202670.62570.59470.563
Sep 3, 202670.71970.68870.531
Sep 2, 202670.31370.28170.313
Sep 1, 202670.59470.56370.281
Aug 31, 202670.45370.43870.531
Aug 28, 202671.20371.15670.875
Aug 27, 202671.28171.25071.125
Aug 26, 202671.28171.25071.250
Aug 25, 202671.34471.31371.375
Aug 24, 202670.93870.90670.781
Aug 21, 202670.40670.37570.313
Aug 20, 202670.56370.53170.750
Aug 19, 202670.96970.93871.094
Aug 18, 202669.93869.90670.063
Aug 17, 202670.06370.03169.813
Aug 14, 202670.28170.25070.313
Aug 13, 202670.81370.78170.813
Aug 12, 202670.59470.56370.406

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 912810SA7.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Feb 8, 2018Feb 15, 2018New issue$16.0bn$19.0bn2.26x3.121%
Mar 13, 2018Mar 15, 2018Reopening$13.0bn$13.0bn2.38x3.109%
Apr 12, 2018Apr 16, 2018Reopening$13.0bn$13.0bn2.41x3.044%

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.