Treasury bond

912810QA9 · 3.5% due February 15, 2039

Original term
30-Year
Maturity
Feb 15, 2039
Coupon
3.500%
Pays
Semi-Annual
Dated
Feb 15, 2009
First coupon
Aug 15, 2009
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$25.91bn
Held stripped
$75.6m
Share stripped
0.29%

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
4.909%
Modified duration
9.721 yr
DV01
0.0848
Convexity
113.548
Dirty price
87.247

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 9 of twelve buckets, summing to 9.915 years against a modified duration of 9.721.

Against the fitted curve

Priced 9.5 bp rich to the curve on that day, 80.17 cents per 100 of face.

That is -0.39 standard deviations from its own typical residual.

Yield to maturity, 4,395 observations

0%1%2%3%4%5%6%Feb 17, 2009Sep 9, 2026Feb 17, 2009Yield to maturity3.475%Mar 16, 2009Yield to maturity3.762%Apr 13, 2009Yield to maturity3.689%May 8, 2009Yield to maturity4.255%Jun 5, 2009Yield to maturity4.618%Jul 2, 2009Yield to maturity4.318%Jul 30, 2009Yield to maturity4.450%Aug 26, 2009Yield to maturity4.207%Sep 23, 2009Yield to maturity4.206%Oct 21, 2009Yield to maturity4.225%Nov 18, 2009Yield to maturity4.302%Dec 16, 2009Yield to maturity4.533%Jan 14, 2010Yield to maturity4.628%Feb 11, 2010Yield to maturity4.680%Mar 11, 2010Yield to maturity4.672%Apr 7, 2010Yield to maturity4.739%May 4, 2010Yield to maturity4.433%May 31, 2010Yield to maturity4.229%Jun 25, 2010Yield to maturity4.072%Jul 23, 2010Yield to maturity4.016%Aug 19, 2010Yield to maturity3.662%Sep 16, 2010Yield to maturity3.922%Oct 14, 2010Yield to maturity3.905%Nov 10, 2010Yield to maturity4.253%Dec 9, 2010Yield to maturity4.418%Jan 6, 2011Yield to maturity4.545%Feb 3, 2011Yield to maturity4.670%Mar 3, 2011Yield to maturity4.653%Mar 30, 2011Yield to maturity4.541%Apr 27, 2011Yield to maturity4.469%May 24, 2011Yield to maturity4.257%Jun 21, 2011Yield to maturity4.212%Jul 19, 2011Yield to maturity4.184%Aug 15, 2011Yield to maturity3.728%Sep 12, 2011Yield to maturity3.219%Oct 7, 2011Yield to maturity3.013%Nov 4, 2011Yield to maturity3.066%Dec 5, 2011Yield to maturity2.973%Jan 3, 2012Yield to maturity2.932%Jan 31, 2012Yield to maturity2.874%Feb 28, 2012Yield to maturity3.001%Mar 26, 2012Yield to maturity3.266%Apr 20, 2012Yield to maturity3.051%May 17, 2012Yield to maturity2.711%Jun 14, 2012Yield to maturity2.635%Jul 12, 2012Yield to maturity2.465%Aug 8, 2012Yield to maturity2.651%Sep 5, 2012Yield to maturity2.582%Oct 2, 2012Yield to maturity2.686%Oct 31, 2012Yield to maturity2.730%Nov 29, 2012Yield to maturity2.658%Dec 27, 2012Yield to maturity2.755%Jan 25, 2013Yield to maturity3.001%Feb 22, 2013Yield to maturity3.038%Mar 21, 2013Yield to maturity3.046%Apr 18, 2013Yield to maturity2.762%May 15, 2013Yield to maturity3.039%Jun 12, 2013Yield to maturity3.277%Jul 10, 2013Yield to maturity3.594%Aug 6, 2013Yield to maturity3.632%Sep 3, 2013Yield to maturity3.725%Sep 30, 2013Yield to maturity3.623%Oct 28, 2013Yield to maturity3.528%Nov 25, 2013Yield to maturity3.742%Dec 23, 2013Yield to maturity3.763%Jan 22, 2014Yield to maturity3.676%Feb 19, 2014Yield to maturity3.620%Mar 18, 2014Yield to maturity3.526%Apr 14, 2014Yield to maturity3.393%May 12, 2014Yield to maturity3.385%Jun 9, 2014Yield to maturity3.346%Jul 7, 2014Yield to maturity3.343%Aug 1, 2014Yield to maturity3.199%Aug 28, 2014Yield to maturity2.983%Sep 26, 2014Yield to maturity3.133%Oct 24, 2014Yield to maturity2.953%Nov 24, 2014Yield to maturity2.926%Dec 22, 2014Yield to maturity2.659%Jan 21, 2015Yield to maturity2.363%Feb 18, 2015Yield to maturity2.627%Mar 17, 2015Yield to maturity2.546%Apr 13, 2015Yield to maturity2.502%May 8, 2015Yield to maturity2.833%Jun 5, 2015Yield to maturity3.060%Jul 2, 2015Yield to maturity3.116%Jul 30, 2015Yield to maturity2.857%Aug 26, 2015Yield to maturity2.843%Sep 23, 2015Yield to maturity2.835%Oct 21, 2015Yield to maturity2.706%Nov 18, 2015Yield to maturity2.898%Dec 16, 2015Yield to maturity2.855%Jan 14, 2016Yield to maturity2.720%Feb 11, 2016Yield to maturity2.271%Mar 10, 2016Yield to maturity2.488%Apr 7, 2016Yield to maturity2.309%May 4, 2016Yield to maturity2.417%Jun 1, 2016Yield to maturity2.407%Jun 28, 2016Yield to maturity2.015%Jul 26, 2016Yield to maturity2.054%Aug 22, 2016Yield to maturity2.034%Sep 19, 2016Yield to maturity2.253%Oct 17, 2016Yield to maturity2.336%Nov 14, 2016Yield to maturity2.800%Dec 12, 2016Yield to maturity3.010%Jan 10, 2017Yield to maturity2.831%Feb 7, 2017Yield to maturity2.865%Mar 7, 2017Yield to maturity2.977%Apr 3, 2017Yield to maturity2.831%May 1, 2017Yield to maturity2.830%May 26, 2017Yield to maturity2.751%Jun 23, 2017Yield to maturity2.567%Jul 21, 2017Yield to maturity2.660%Aug 17, 2017Yield to maturity2.619%Sep 14, 2017Yield to maturity2.601%Oct 12, 2017Yield to maturity2.688%Nov 8, 2017Yield to maturity2.630%Dec 6, 2017Yield to maturity2.575%Jan 4, 2018Yield to maturity2.660%Feb 1, 2018Yield to maturity2.928%Mar 1, 2018Yield to maturity2.995%Mar 28, 2018Yield to maturity2.906%Apr 25, 2018Yield to maturity3.126%May 22, 2018Yield to maturity3.149%Jun 19, 2018Yield to maturity2.961%Jul 17, 2018Yield to maturity2.915%Aug 13, 2018Yield to maturity2.976%Sep 10, 2018Yield to maturity3.022%Oct 5, 2018Yield to maturity3.340%Nov 2, 2018Yield to maturity3.371%Dec 3, 2018Yield to maturity3.153%Jan 2, 2019Yield to maturity2.830%Jan 30, 2019Yield to maturity2.908%Feb 27, 2019Yield to maturity2.909%Mar 26, 2019Yield to maturity2.671%Apr 23, 2019Yield to maturity2.803%May 20, 2019Yield to maturity2.657%Jun 17, 2019Yield to maturity2.360%Jul 15, 2019Yield to maturity2.386%Aug 9, 2019Yield to maturity2.021%Sep 6, 2019Yield to maturity1.823%Oct 3, 2019Yield to maturity1.835%Oct 31, 2019Yield to maturity1.984%Nov 29, 2019Yield to maturity2.049%Dec 27, 2019Yield to maturity2.158%Jan 27, 2020Yield to maturity1.873%Feb 24, 2020Yield to maturity1.647%Mar 20, 2020Yield to maturity1.297%Apr 17, 2020Yield to maturity1.017%May 14, 2020Yield to maturity0.957%Jun 11, 2020Yield to maturity1.051%Jul 9, 2020Yield to maturity0.958%Aug 5, 2020Yield to maturity0.871%Sep 1, 2020Yield to maturity1.065%Sep 29, 2020Yield to maturity1.032%Oct 27, 2020Yield to maturity1.171%Nov 24, 2020Yield to maturity1.226%Dec 22, 2020Yield to maturity1.287%Jan 21, 2021Yield to maturity1.513%Feb 18, 2021Yield to maturity1.729%Mar 17, 2021Yield to maturity2.132%Apr 13, 2021Yield to maturity2.047%May 10, 2021Yield to maturity2.046%Jun 7, 2021Yield to maturity2.000%Jul 2, 2021Yield to maturity1.814%Jul 30, 2021Yield to maturity1.626%Aug 26, 2021Yield to maturity1.672%Sep 23, 2021Yield to maturity1.693%Oct 21, 2021Yield to maturity1.938%Nov 18, 2021Yield to maturity1.824%Dec 16, 2021Yield to maturity1.689%Jan 13, 2022Yield to maturity1.957%Feb 10, 2022Yield to maturity2.252%Mar 10, 2022Yield to maturity2.191%Apr 6, 2022Yield to maturity2.695%May 4, 2022Yield to maturity3.054%Jun 1, 2022Yield to maturity3.104%Jun 29, 2022Yield to maturity3.231%Jul 27, 2022Yield to maturity2.941%Aug 23, 2022Yield to maturity3.215%Sep 20, 2022Yield to maturity3.668%Oct 18, 2022Yield to maturity4.106%Nov 15, 2022Yield to maturity4.041%Dec 13, 2022Yield to maturity3.579%Jan 11, 2023Yield to maturity3.684%Feb 8, 2023Yield to maturity3.722%Mar 8, 2023Yield to maturity4.013%Apr 4, 2023Yield to maturity3.489%May 1, 2023Yield to maturity3.713%May 26, 2023Yield to maturity3.951%Jun 26, 2023Yield to maturity3.796%Jul 24, 2023Yield to maturity3.907%Aug 18, 2023Yield to maturity4.379%Sep 15, 2023Yield to maturity4.424%Oct 13, 2023Yield to maturity4.845%Nov 9, 2023Yield to maturity4.837%Dec 7, 2023Yield to maturity4.290%Jan 5, 2024Yield to maturity4.162%Feb 2, 2024Yield to maturity4.144%Mar 1, 2024Yield to maturity4.278%Mar 28, 2024Yield to maturity4.248%Apr 24, 2024Yield to maturity4.721%May 21, 2024Yield to maturity4.459%Jun 18, 2024Yield to maturity4.259%Jul 17, 2024Yield to maturity4.244%Aug 13, 2024Yield to maturity3.965%Sep 10, 2024Yield to maturity3.763%Oct 7, 2024Yield to maturity4.146%Nov 4, 2024Yield to maturity4.409%Dec 3, 2024Yield to maturity4.319%Dec 31, 2024Yield to maturity4.703%Jan 29, 2025Yield to maturity4.672%Feb 26, 2025Yield to maturity4.348%Mar 25, 2025Yield to maturity4.451%Apr 21, 2025Yield to maturity4.696%May 16, 2025Yield to maturity4.661%Jun 13, 2025Yield to maturity4.632%Jul 14, 2025Yield to maturity4.661%Aug 8, 2025Yield to maturity4.492%Sep 5, 2025Yield to maturity4.338%Oct 2, 2025Yield to maturity4.299%Oct 30, 2025Yield to maturity4.289%Nov 28, 2025Yield to maturity4.257%Dec 26, 2025Yield to maturity4.367%Jan 26, 2026Yield to maturity4.394%Feb 23, 2026Yield to maturity4.238%Mar 20, 2026Yield to maturity4.604%Apr 16, 2026Yield to maturity4.502%May 13, 2026Yield to maturity4.638%Jun 10, 2026Yield to maturity4.676%Jul 9, 2026Yield to maturity4.671%Aug 5, 2026Yield to maturity4.759%Sep 1, 2026Yield to maturity4.889%Sep 9, 2026Yield to maturity4.909%

Price history

4,395 trading days to Sep 9, 2026

6080100120140160Feb 17, 2009Sep 9, 2026Feb 17, 2009Close100.469Mar 16, 2009Close95.313Apr 13, 2009Close96.594May 8, 2009Close87.313Jun 5, 2009Close82.031Jul 2, 2009Close86.406Jul 30, 2009Close84.469Aug 26, 2009Close88.125Sep 23, 2009Close88.156Oct 21, 2009Close87.875Nov 18, 2009Close86.719Dec 16, 2009Close83.375Jan 14, 2010Close82.063Feb 11, 2010Close81.375Mar 11, 2010Close81.500Apr 7, 2010Close80.625May 4, 2010Close84.906May 31, 2010Close87.938Jun 25, 2010Close90.375Jul 23, 2010Close91.281Aug 19, 2010Close97.156Sep 16, 2010Close92.813Oct 14, 2010Close93.094Nov 10, 2010Close87.688Dec 9, 2010Close85.281Jan 6, 2011Close83.500Feb 3, 2011Close81.813Mar 3, 2011Close82.063Mar 30, 2011Close83.625Apr 27, 2011Close84.656May 24, 2011Close87.750Jun 21, 2011Close88.438Jul 19, 2011Close88.875Aug 15, 2011Close96.094Sep 12, 2011Close105.094Oct 7, 2011Close109.031Nov 4, 2011Close107.969Dec 5, 2011Close109.781Jan 3, 2012Close110.563Jan 31, 2012Close111.719Feb 28, 2012Close109.188Mar 26, 2012Close104.156Apr 20, 2012Close108.188May 17, 2012Close114.938Jun 14, 2012Close116.500Jul 12, 2012Close120.094Aug 8, 2012Close116.094Sep 5, 2012Close117.500Oct 2, 2012Close115.313Oct 31, 2012Close114.375Nov 29, 2012Close115.813Dec 27, 2012Close113.813Jan 25, 2013Close108.969Feb 22, 2013Close108.250Mar 21, 2013Close108.094Apr 18, 2013Close113.563May 15, 2013Close108.188Jun 12, 2013Close103.844Jul 10, 2013Close98.438Aug 6, 2013Close97.813Sep 3, 2013Close96.313Sep 30, 2013Close97.969Oct 28, 2013Close99.531Nov 25, 2013Close96.063Dec 23, 2013Close95.750Jan 22, 2014Close97.125Feb 19, 2014Close98.031Mar 18, 2014Close99.563Apr 14, 2014Close101.781May 12, 2014Close101.906Jun 9, 2014Close102.563Jul 7, 2014Close102.625Aug 1, 2014Close105.094Aug 28, 2014Close108.938Sep 26, 2014Close106.219Oct 24, 2014Close109.438Nov 24, 2014Close109.906Dec 22, 2014Close114.906Jan 21, 2015Close120.781Feb 18, 2015Close115.469Mar 17, 2015Close117.000Apr 13, 2015Close117.844May 8, 2015Close111.469Jun 5, 2015Close107.375Jul 2, 2015Close106.375Jul 30, 2015Close110.969Aug 26, 2015Close111.188Sep 23, 2015Close111.313Oct 21, 2015Close113.656Nov 18, 2015Close110.125Dec 16, 2015Close110.875Jan 14, 2016Close113.313Feb 11, 2016Close121.938Mar 10, 2016Close117.594Apr 7, 2016Close121.063May 4, 2016Close118.875Jun 1, 2016Close119.031Jun 28, 2016Close126.875Jul 26, 2016Close126.000Aug 22, 2016Close126.344Sep 19, 2016Close121.844Oct 17, 2016Close120.156Nov 14, 2016Close111.531Dec 12, 2016Close107.875Jan 10, 2017Close110.938Feb 7, 2017Close110.313Mar 7, 2017Close108.375Apr 3, 2017Close110.844May 1, 2017Close110.844May 26, 2017Close112.188Jun 23, 2017Close115.406Jul 21, 2017Close113.719Aug 17, 2017Close114.406Sep 14, 2017Close114.688Oct 12, 2017Close113.125Nov 8, 2017Close114.094Dec 6, 2017Close115.031Jan 4, 2018Close113.500Feb 1, 2018Close108.938Mar 1, 2018Close107.813Mar 28, 2018Close109.250Apr 25, 2018Close105.688May 22, 2018Close105.313Jun 19, 2018Close108.281Jul 17, 2018Close109.000Aug 13, 2018Close108.000Sep 10, 2018Close107.250Oct 5, 2018Close102.344Nov 2, 2018Close101.875Dec 3, 2018Close105.156Jan 2, 2019Close110.219Jan 30, 2019Close108.938Feb 27, 2019Close108.906Mar 26, 2019Close112.719Apr 23, 2019Close110.531May 20, 2019Close112.875Jun 17, 2019Close117.844Jul 15, 2019Close117.344Aug 9, 2019Close123.750Sep 6, 2019Close127.344Oct 3, 2019Close127.031Oct 31, 2019Close124.188Nov 29, 2019Close122.938Dec 27, 2019Close120.938Jan 27, 2020Close125.969Feb 24, 2020Close130.094Mar 20, 2020Close136.813Apr 17, 2020Close142.438May 14, 2020Close143.563Jun 11, 2020Close141.438Jul 9, 2020Close143.219Aug 5, 2020Close144.875Sep 1, 2020Close140.688Sep 29, 2020Close141.219Oct 27, 2020Close138.250Nov 24, 2020Close137.031Dec 22, 2020Close135.719Jan 21, 2021Close131.313Feb 18, 2021Close127.281Mar 17, 2021Close120.281Apr 13, 2021Close121.625May 10, 2021Close121.563Jun 7, 2021Close122.250Jul 2, 2021Close125.313Jul 30, 2021Close128.500Aug 26, 2021Close127.594Sep 23, 2021Close127.125Oct 21, 2021Close122.875Nov 18, 2021Close124.688Dec 16, 2021Close126.875Jan 13, 2022Close122.313Feb 10, 2022Close117.563Mar 10, 2022Close118.438Apr 6, 2022Close110.844May 4, 2022Close105.813Jun 1, 2022Close105.125Jun 29, 2022Close103.438Jul 27, 2022Close107.281Aug 23, 2022Close103.625Sep 20, 2022Close97.938Oct 18, 2022Close92.844Nov 15, 2022Close93.594Dec 13, 2022Close99.031Jan 11, 2023Close97.781Feb 8, 2023Close97.344Mar 8, 2023Close94.000Apr 4, 2023Close100.125May 1, 2023Close97.469May 26, 2023Close94.750Jun 26, 2023Close96.531Jul 24, 2023Close95.281Aug 18, 2023Close90.188Sep 15, 2023Close89.750Oct 13, 2023Close85.563Nov 9, 2023Close85.688Dec 7, 2023Close91.250Jan 5, 2024Close92.625Feb 2, 2024Close92.844Mar 1, 2024Close91.469Mar 28, 2024Close91.813Apr 24, 2024Close87.094May 21, 2024Close89.719Jun 18, 2024Close91.781Jul 17, 2024Close91.969Aug 13, 2024Close94.906Sep 10, 2024Close97.094Oct 7, 2024Close93.063Nov 4, 2024Close90.438Dec 3, 2024Close91.375Dec 31, 2024Close87.688Jan 29, 2025Close88.031Feb 26, 2025Close91.188Mar 25, 2025Close90.219Apr 21, 2025Close87.938May 16, 2025Close88.313Jun 13, 2025Close88.625Jul 14, 2025Close88.406Aug 8, 2025Close90.031Sep 5, 2025Close91.531Oct 2, 2025Close91.938Oct 30, 2025Close92.063Nov 28, 2025Close92.406Dec 26, 2025Close91.406Jan 26, 2026Close91.188Feb 23, 2026Close92.688Mar 20, 2026Close89.344Apr 16, 2026Close90.313May 13, 2026Close89.125Jun 10, 2026Close88.844Jul 9, 2026Close88.938Aug 5, 2026Close88.219Sep 1, 2026Close87.156Sep 9, 2026Close87.000
The most recent 20 trading days of prices for 912810QA9.
DateBidOfferClose
Sep 9, 202686.92286.84487.000
Sep 8, 202687.39187.31387.219
Sep 4, 202687.48487.40687.344
Sep 3, 202687.64187.56387.406
Sep 2, 202687.20387.12587.188
Sep 1, 202687.48487.40687.156
Aug 31, 202687.45387.37587.469
Aug 28, 202688.01687.93887.688
Aug 27, 202688.29788.21988.063
Aug 26, 202688.28188.18888.156
Aug 25, 202688.34488.25088.344
Aug 24, 202688.00087.90687.781
Aug 21, 202687.57887.50087.438
Aug 20, 202687.79787.71987.813
Aug 19, 202688.15688.06388.188
Aug 18, 202687.48487.40687.531
Aug 17, 202687.57887.50087.313
Aug 14, 202687.76687.68887.688
Aug 13, 202688.15688.09488.094
Aug 12, 202687.89187.81387.688

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.

2 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 912810QA9.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Feb 12, 2009Feb 17, 2009New issue$14.0bn$14.7bn2.02x3.540%
Mar 12, 2009Mar 16, 2009Reopening$11.0bn$11.2bn2.40x3.640%

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.

Free to benchmark against. Paid only to track. Measuring anything against these curves and indices is free. No license, no fee, no registration, and no permission needed to say that you did, including in a prospectus. A fee applies to one thing: launching a product that tracks an index.

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.