Treasury bond

912810RK6 · 2.5% due February 15, 2045

Original term
30-Year
Maturity
Feb 15, 2045
Coupon
2.500%
Pays
Semi-Annual
Dated
Feb 15, 2015
First coupon
Aug 15, 2015
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$42.00bn
Held stripped
$3.40bn
Share stripped
8.09%

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
5.321%
Modified duration
13.509 yr
DV01
0.0909
Convexity
225.897
Dirty price
67.302

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 10 of twelve buckets, summing to 13.757 years against a modified duration of 13.509.

Against the fitted curve

Priced 1.5 bp cheap to the curve on that day, 13.54 cents per 100 of face.

That is -0.49 standard deviations from its own typical residual.

Yield to maturity, 2,895 observations

1%2%3%4%5%6%Feb 17, 2015Sep 9, 2026Feb 17, 2015Yield to maturity2.731%Mar 6, 2015Yield to maturity2.831%Mar 25, 2015Yield to maturity2.503%Apr 13, 2015Yield to maturity2.581%Apr 30, 2015Yield to maturity2.745%May 19, 2015Yield to maturity3.070%Jun 8, 2015Yield to maturity3.132%Jun 25, 2015Yield to maturity3.177%Jul 15, 2015Yield to maturity3.158%Aug 3, 2015Yield to maturity2.877%Aug 20, 2015Yield to maturity2.778%Sep 9, 2015Yield to maturity2.987%Sep 28, 2015Yield to maturity2.897%Oct 16, 2015Yield to maturity2.895%Nov 4, 2015Yield to maturity3.017%Nov 24, 2015Yield to maturity3.024%Dec 14, 2015Yield to maturity2.982%Jan 4, 2016Yield to maturity3.000%Jan 22, 2016Yield to maturity2.838%Feb 10, 2016Yield to maturity2.543%Mar 1, 2016Yield to maturity2.711%Mar 18, 2016Yield to maturity2.683%Apr 7, 2016Yield to maturity2.521%Apr 26, 2016Yield to maturity2.762%May 13, 2016Yield to maturity2.558%Jun 2, 2016Yield to maturity2.588%Jun 21, 2016Yield to maturity2.505%Jul 11, 2016Yield to maturity2.148%Jul 28, 2016Yield to maturity2.234%Aug 16, 2016Yield to maturity2.293%Sep 2, 2016Yield to maturity2.275%Sep 22, 2016Yield to maturity2.346%Oct 12, 2016Yield to maturity2.511%Oct 31, 2016Yield to maturity2.581%Nov 18, 2016Yield to maturity3.036%Dec 8, 2016Yield to maturity3.125%Dec 28, 2016Yield to maturity3.119%Jan 18, 2017Yield to maturity3.019%Feb 6, 2017Yield to maturity3.070%Feb 24, 2017Yield to maturity2.976%Mar 15, 2017Yield to maturity3.133%Apr 3, 2017Yield to maturity3.002%Apr 21, 2017Yield to maturity2.912%May 10, 2017Yield to maturity3.055%May 30, 2017Yield to maturity2.892%Jun 16, 2017Yield to maturity2.786%Jul 6, 2017Yield to maturity2.910%Jul 25, 2017Yield to maturity2.914%Aug 11, 2017Yield to maturity2.783%Aug 30, 2017Yield to maturity2.744%Sep 19, 2017Yield to maturity2.809%Oct 6, 2017Yield to maturity2.902%Oct 26, 2017Yield to maturity2.956%Nov 14, 2017Yield to maturity2.832%Dec 4, 2017Yield to maturity2.764%Dec 21, 2017Yield to maturity2.843%Jan 11, 2018Yield to maturity2.868%Jan 31, 2018Yield to maturity2.939%Feb 20, 2018Yield to maturity3.153%Mar 9, 2018Yield to maturity3.169%Mar 28, 2018Yield to maturity3.011%Apr 17, 2018Yield to maturity2.999%May 4, 2018Yield to maturity3.112%May 23, 2018Yield to maturity3.169%Jun 12, 2018Yield to maturity3.091%Jun 29, 2018Yield to maturity2.982%Jul 19, 2018Yield to maturity2.964%Aug 7, 2018Yield to maturity3.125%Aug 24, 2018Yield to maturity2.969%Sep 13, 2018Yield to maturity3.110%Oct 2, 2018Yield to maturity3.206%Oct 22, 2018Yield to maturity3.387%Nov 8, 2018Yield to maturity3.439%Nov 29, 2018Yield to maturity3.334%Dec 19, 2018Yield to maturity3.004%Jan 9, 2019Yield to maturity3.033%Jan 29, 2019Yield to maturity3.041%Feb 15, 2019Yield to maturity2.990%Mar 7, 2019Yield to maturity3.028%Mar 26, 2019Yield to maturity2.852%Apr 12, 2019Yield to maturity2.961%May 2, 2019Yield to maturity2.930%May 21, 2019Yield to maturity2.835%Jun 10, 2019Yield to maturity2.616%Jun 27, 2019Yield to maturity2.518%Jul 17, 2019Yield to maturity2.558%Aug 5, 2019Yield to maturity2.284%Aug 22, 2019Yield to maturity2.093%Sep 11, 2019Yield to maturity2.194%Sep 30, 2019Yield to maturity2.110%Oct 18, 2019Yield to maturity2.242%Nov 6, 2019Yield to maturity2.294%Nov 26, 2019Yield to maturity2.180%Dec 16, 2019Yield to maturity2.306%Jan 6, 2020Yield to maturity2.283%Jan 24, 2020Yield to maturity2.161%Feb 12, 2020Yield to maturity2.103%Mar 3, 2020Yield to maturity1.667%Mar 20, 2020Yield to maturity1.659%Apr 8, 2020Yield to maturity1.347%Apr 28, 2020Yield to maturity1.210%May 15, 2020Yield to maturity1.290%Jun 4, 2020Yield to maturity1.583%Jun 23, 2020Yield to maturity1.454%Jul 13, 2020Yield to maturity1.297%Jul 30, 2020Yield to maturity1.153%Aug 18, 2020Yield to maturity1.346%Sep 4, 2020Yield to maturity1.395%Sep 24, 2020Yield to maturity1.328%Oct 14, 2020Yield to maturity1.413%Nov 2, 2020Yield to maturity1.527%Nov 20, 2020Yield to maturity1.437%Dec 10, 2020Yield to maturity1.537%Dec 30, 2020Yield to maturity1.558%Jan 20, 2021Yield to maturity1.738%Feb 8, 2021Yield to maturity1.869%Feb 26, 2021Yield to maturity2.150%Mar 17, 2021Yield to maturity2.395%Apr 5, 2021Yield to maturity2.335%Apr 22, 2021Yield to maturity2.199%May 11, 2021Yield to maturity2.316%May 28, 2021Yield to maturity2.244%Jun 17, 2021Yield to maturity2.099%Jul 7, 2021Yield to maturity1.925%Jul 26, 2021Yield to maturity1.914%Aug 12, 2021Yield to maturity1.990%Aug 31, 2021Yield to maturity1.897%Sep 20, 2021Yield to maturity1.829%Oct 7, 2021Yield to maturity2.125%Oct 27, 2021Yield to maturity1.954%Nov 16, 2021Yield to maturity2.068%Dec 6, 2021Yield to maturity1.837%Dec 23, 2021Yield to maturity1.959%Jan 12, 2022Yield to maturity2.150%Feb 1, 2022Yield to maturity2.213%Feb 18, 2022Yield to maturity2.369%Mar 10, 2022Yield to maturity2.525%Mar 29, 2022Yield to maturity2.717%Apr 18, 2022Yield to maturity3.173%May 5, 2022Yield to maturity3.422%May 24, 2022Yield to maturity3.259%Jun 13, 2022Yield to maturity3.733%Jul 1, 2022Yield to maturity3.420%Jul 21, 2022Yield to maturity3.406%Aug 9, 2022Yield to maturity3.333%Aug 26, 2022Yield to maturity3.552%Sep 15, 2022Yield to maturity3.829%Oct 4, 2022Yield to maturity4.045%Oct 24, 2022Yield to maturity4.704%Nov 10, 2022Yield to maturity4.345%Dec 1, 2022Yield to maturity3.943%Dec 20, 2022Yield to maturity4.002%Jan 10, 2023Yield to maturity3.970%Jan 30, 2023Yield to maturity3.838%Feb 16, 2023Yield to maturity4.122%Mar 8, 2023Yield to maturity4.143%Mar 27, 2023Yield to maturity3.976%Apr 13, 2023Yield to maturity3.866%May 2, 2023Yield to maturity3.881%May 19, 2023Yield to maturity4.141%Jun 8, 2023Yield to maturity4.103%Jun 28, 2023Yield to maturity4.031%Jul 18, 2023Yield to maturity4.130%Aug 4, 2023Yield to maturity4.413%Aug 23, 2023Yield to maturity4.516%Sep 12, 2023Yield to maturity4.579%Sep 29, 2023Yield to maturity4.978%Oct 19, 2023Yield to maturity5.367%Nov 7, 2023Yield to maturity4.962%Nov 27, 2023Yield to maturity4.780%Dec 14, 2023Yield to maturity4.267%Jan 4, 2024Yield to maturity4.349%Jan 24, 2024Yield to maturity4.576%Feb 12, 2024Yield to maturity4.532%Mar 1, 2024Yield to maturity4.507%Mar 20, 2024Yield to maturity4.596%Apr 8, 2024Yield to maturity4.690%Apr 25, 2024Yield to maturity4.968%May 14, 2024Yield to maturity4.733%Jun 3, 2024Yield to maturity4.681%Jun 21, 2024Yield to maturity4.549%Jul 11, 2024Yield to maturity4.553%Jul 30, 2024Yield to maturity4.545%Aug 16, 2024Yield to maturity4.313%Sep 5, 2024Yield to maturity4.166%Sep 24, 2024Yield to maturity4.191%Oct 11, 2024Yield to maturity4.503%Oct 31, 2024Yield to maturity4.634%Nov 20, 2024Yield to maturity4.745%Dec 10, 2024Yield to maturity4.555%Dec 30, 2024Yield to maturity4.904%Jan 17, 2025Yield to maturity4.968%Feb 6, 2025Yield to maturity4.748%Feb 26, 2025Yield to maturity4.616%Mar 17, 2025Yield to maturity4.709%Apr 3, 2025Yield to maturity4.573%Apr 22, 2025Yield to maturity4.994%May 9, 2025Yield to maturity4.940%May 29, 2025Yield to maturity5.033%Jun 17, 2025Yield to maturity4.971%Jul 8, 2025Yield to maturity5.008%Jul 25, 2025Yield to maturity4.988%Aug 13, 2025Yield to maturity4.873%Sep 2, 2025Yield to maturity5.004%Sep 19, 2025Yield to maturity4.780%Oct 8, 2025Yield to maturity4.745%Oct 28, 2025Yield to maturity4.572%Nov 17, 2025Yield to maturity4.754%Dec 5, 2025Yield to maturity4.821%Dec 24, 2025Yield to maturity4.822%Jan 14, 2026Yield to maturity4.787%Feb 3, 2026Yield to maturity4.898%Feb 23, 2026Yield to maturity4.686%Mar 12, 2026Yield to maturity4.921%Mar 31, 2026Yield to maturity4.926%Apr 17, 2026Yield to maturity4.902%May 6, 2026Yield to maturity4.971%May 26, 2026Yield to maturity5.077%Jun 12, 2026Yield to maturity5.024%Jul 2, 2026Yield to maturity5.036%Jul 22, 2026Yield to maturity5.220%Aug 10, 2026Yield to maturity5.308%Aug 27, 2026Yield to maturity5.228%Sep 9, 2026Yield to maturity5.321%

Price history

2,895 trading days to Sep 9, 2026

6080100120140Feb 17, 2015Sep 9, 2026Feb 17, 2015Close95.281Mar 6, 2015Close93.344Mar 25, 2015Close99.938Apr 13, 2015Close98.313Apr 30, 2015Close95.031May 19, 2015Close88.938Jun 8, 2015Close87.844Jun 25, 2015Close87.063Jul 15, 2015Close87.406Aug 3, 2015Close92.531Aug 20, 2015Close94.438Sep 9, 2015Close90.500Sep 28, 2015Close92.188Oct 16, 2015Close92.219Nov 4, 2015Close90.000Nov 24, 2015Close89.875Dec 14, 2015Close90.656Jan 4, 2016Close90.344Jan 22, 2016Close93.344Feb 10, 2016Close99.125Mar 1, 2016Close95.781Mar 18, 2016Close96.344Apr 7, 2016Close99.563Apr 26, 2016Close94.813May 13, 2016Close98.813Jun 2, 2016Close98.219Jun 21, 2016Close99.906Jul 11, 2016Close107.500Jul 28, 2016Close105.594Aug 16, 2016Close104.313Sep 2, 2016Close104.688Sep 22, 2016Close103.188Oct 12, 2016Close99.781Oct 31, 2016Close98.375Nov 18, 2016Close89.875Dec 8, 2016Close88.344Dec 28, 2016Close88.469Jan 18, 2017Close90.219Feb 6, 2017Close89.344Feb 24, 2017Close91.000Mar 15, 2017Close88.281Apr 3, 2017Close90.563Apr 21, 2017Close92.188May 10, 2017Close89.656May 30, 2017Close92.563Jun 16, 2017Close94.500Jul 6, 2017Close92.250Jul 25, 2017Close92.188Aug 11, 2017Close94.594Aug 30, 2017Close95.313Sep 19, 2017Close94.125Oct 6, 2017Close92.438Oct 26, 2017Close91.500Nov 14, 2017Close93.719Dec 4, 2017Close94.969Dec 21, 2017Close93.531Jan 11, 2018Close93.094Jan 31, 2018Close91.844Feb 20, 2018Close88.188Mar 9, 2018Close87.938Mar 28, 2018Close90.625Apr 17, 2018Close90.844May 4, 2018Close88.938May 23, 2018Close88.000Jun 12, 2018Close89.313Jun 29, 2018Close91.188Jul 19, 2018Close91.500Aug 7, 2018Close88.781Aug 24, 2018Close91.438Sep 13, 2018Close89.063Oct 2, 2018Close87.500Oct 22, 2018Close84.625Nov 8, 2018Close83.844Nov 29, 2018Close85.500Dec 19, 2018Close90.906Jan 9, 2019Close90.438Jan 29, 2019Close90.313Feb 15, 2019Close91.188Mar 7, 2019Close90.563Mar 26, 2019Close93.594Apr 12, 2019Close91.719May 2, 2019Close92.250May 21, 2019Close93.906Jun 10, 2019Close97.844Jun 27, 2019Close99.656Jul 17, 2019Close98.906Aug 5, 2019Close104.156Aug 22, 2019Close108.000Sep 11, 2019Close105.938Sep 30, 2019Close107.625Oct 18, 2019Close104.969Nov 6, 2019Close103.938Nov 26, 2019Close106.188Dec 16, 2019Close103.688Jan 6, 2020Close104.125Jan 24, 2020Close106.531Feb 12, 2020Close107.688Mar 3, 2020Close116.938Mar 20, 2020Close117.094Apr 8, 2020Close124.281Apr 28, 2020Close127.563May 15, 2020Close125.563Jun 4, 2020Close118.688Jun 23, 2020Close121.594Jul 13, 2020Close125.250Jul 30, 2020Close128.719Aug 18, 2020Close124.000Sep 4, 2020Close122.813Sep 24, 2020Close124.344Oct 14, 2020Close122.313Nov 2, 2020Close119.688Nov 20, 2020Close121.688Dec 10, 2020Close119.375Dec 30, 2020Close118.875Jan 20, 2021Close114.938Feb 8, 2021Close112.156Feb 26, 2021Close106.531Mar 17, 2021Close101.906Apr 5, 2021Close103.000Apr 22, 2021Close105.563May 11, 2021Close103.344May 28, 2021Close104.688Jun 17, 2021Close107.438Jul 7, 2021Close110.875Jul 26, 2021Close111.063Aug 12, 2021Close109.531Aug 31, 2021Close111.375Sep 20, 2021Close112.719Oct 7, 2021Close106.875Oct 27, 2021Close110.188Nov 16, 2021Close107.938Dec 6, 2021Close112.469Dec 23, 2021Close110.031Jan 12, 2022Close106.344Feb 1, 2022Close105.156Feb 18, 2022Close102.313Mar 10, 2022Close99.563Mar 29, 2022Close96.313Apr 18, 2022Close89.125May 5, 2022Close85.500May 24, 2022Close87.875Jun 13, 2022Close81.250Jul 1, 2022Close85.594Jul 21, 2022Close85.813Aug 9, 2022Close86.875Aug 26, 2022Close83.813Sep 15, 2022Close80.125Oct 4, 2022Close77.406Oct 24, 2022Close69.750Nov 10, 2022Close73.844Dec 1, 2022Close78.781Dec 20, 2022Close78.063Jan 10, 2023Close78.500Jan 30, 2023Close80.219Feb 16, 2023Close76.688Mar 8, 2023Close76.469Mar 27, 2023Close78.563Apr 13, 2023Close79.969May 2, 2023Close79.813May 19, 2023Close76.625Jun 8, 2023Close77.125Jun 28, 2023Close78.031Jul 18, 2023Close76.875Aug 4, 2023Close73.594Aug 23, 2023Close72.469Sep 12, 2023Close71.813Sep 29, 2023Close67.625Oct 19, 2023Close63.844Nov 7, 2023Close67.875Nov 27, 2023Close69.813Dec 14, 2023Close75.531Jan 4, 2024Close74.625Jan 24, 2024Close72.125Feb 12, 2024Close72.656Mar 1, 2024Close72.969Mar 20, 2024Close72.031Apr 8, 2024Close71.063Apr 25, 2024Close68.219May 14, 2024Close70.688Jun 3, 2024Close71.281Jun 21, 2024Close72.750Jul 11, 2024Close72.750Jul 30, 2024Close72.875Aug 16, 2024Close75.500Sep 5, 2024Close77.219Sep 24, 2024Close76.969Oct 11, 2024Close73.500Oct 31, 2024Close72.125Nov 20, 2024Close71.000Dec 10, 2024Close73.063Dec 30, 2024Close69.469Jan 17, 2025Close68.875Feb 6, 2025Close71.156Feb 26, 2025Close72.594Mar 17, 2025Close71.656Apr 3, 2025Close73.125Apr 22, 2025Close68.844May 9, 2025Close69.438May 29, 2025Close68.563Jun 17, 2025Close69.219Jul 8, 2025Close68.906Jul 25, 2025Close69.156Aug 13, 2025Close70.344Sep 2, 2025Close69.094Sep 19, 2025Close71.375Oct 8, 2025Close71.781Oct 28, 2025Close73.625Nov 17, 2025Close71.781Dec 5, 2025Close71.156Dec 24, 2025Close71.188Jan 14, 2026Close71.594Feb 3, 2026Close70.531Feb 23, 2026Close72.719Mar 12, 2026Close70.406Mar 31, 2026Close70.406Apr 17, 2026Close70.688May 6, 2026Close70.063May 26, 2026Close69.094Jun 12, 2026Close69.656Jul 2, 2026Close69.594Jul 22, 2026Close67.906Aug 10, 2026Close67.156Aug 27, 2026Close67.938Sep 9, 2026Close67.125
The most recent 20 trading days of prices for 912810RK6.
DateBidOfferClose
Sep 9, 202666.92266.87567.125
Sep 8, 202667.50067.46967.313
Sep 4, 202667.51667.46967.438
Sep 3, 202667.59467.56367.406
Sep 2, 202667.17267.12567.156
Sep 1, 202667.46967.43867.156
Aug 31, 202667.32867.28167.406
Aug 28, 202668.01667.96967.688
Aug 27, 202668.09468.06367.938
Aug 26, 202668.09468.06368.031
Aug 25, 202668.18868.15668.219
Aug 24, 202667.84467.81367.688
Aug 21, 202667.35967.31367.250
Aug 20, 202667.51667.46967.656
Aug 19, 202667.87567.84468.000
Aug 18, 202666.90666.87567.000
Aug 17, 202667.00066.96966.750
Aug 14, 202667.18867.15667.219
Aug 13, 202667.67267.62567.656
Aug 12, 202667.42267.37567.250

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 912810RK6.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Feb 12, 2015Feb 17, 2015New issue$16.0bn$16.0bn2.26x2.560%
Mar 12, 2015Mar 16, 2015Reopening$13.0bn$13.0bn2.18x2.681%
Apr 9, 2015Apr 15, 2015Reopening$13.0bn$13.0bn2.18x2.597%

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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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.