Treasury bond

912810SF6 · 3% due February 15, 2049

Original term
30-Year
Maturity
Feb 15, 2049
Coupon
3.000%
Pays
Semi-Annual
Dated
Feb 15, 2019
First coupon
Aug 15, 2019
Priced through
Sep 10, 2026
Analyzed through
Sep 10, 2026

Statement of August 31, 2026

Amount outstanding
$54.20bn
Held stripped
$15.38bn
Share stripped
28.37%

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 10, 2026

Yield to maturity
5.457%
Modified duration
14.568 yr
DV01
0.1000
Convexity
281.008
Dirty price
68.658

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 14.765 years against a modified duration of 14.568.

Against the fitted curve

Priced 0.4 bp rich to the curve on that day, 3.86 cents per 100 of face.

That is -0.58 standard deviations from its own typical residual.

Yield to maturity, 1,895 observations

1%2%3%4%5%6%Feb 15, 2019Sep 10, 2026Feb 15, 2019Yield to maturity2.997%Apr 22, 2019Yield to maturity2.995%Jun 24, 2019Yield to maturity2.549%Aug 26, 2019Yield to maturity2.032%Oct 29, 2019Yield to maturity2.329%Jan 3, 2020Yield to maturity2.255%Mar 9, 2020Yield to maturity1.028%May 11, 2020Yield to maturity1.427%Jul 14, 2020Yield to maturity1.279%Sep 15, 2020Yield to maturity1.387%Nov 18, 2020Yield to maturity1.559%Jan 25, 2021Yield to maturity1.744%Mar 29, 2021Yield to maturity2.405%May 28, 2021Yield to maturity2.250%Aug 2, 2021Yield to maturity1.846%Oct 4, 2021Yield to maturity2.033%Dec 8, 2021Yield to maturity1.876%Feb 10, 2022Yield to maturity2.331%Apr 14, 2022Yield to maturity2.974%Jun 17, 2022Yield to maturity3.409%Aug 22, 2022Yield to maturity3.368%Oct 25, 2022Yield to maturity4.345%Dec 29, 2022Yield to maturity4.037%Mar 6, 2023Yield to maturity4.029%May 5, 2023Yield to maturity3.822%Jul 11, 2023Yield to maturity4.143%Sep 12, 2023Yield to maturity4.489%Nov 14, 2023Yield to maturity4.795%Jan 19, 2024Yield to maturity4.520%Mar 22, 2024Yield to maturity4.521%May 23, 2024Yield to maturity4.698%Jul 29, 2024Yield to maturity4.553%Sep 30, 2024Yield to maturity4.277%Dec 4, 2024Yield to maturity4.517%Feb 7, 2025Yield to maturity4.822%Apr 11, 2025Yield to maturity5.006%Jun 13, 2025Yield to maturity5.036%Aug 18, 2025Yield to maturity5.020%Oct 21, 2025Yield to maturity4.614%Dec 24, 2025Yield to maturity4.872%Mar 2, 2026Yield to maturity4.754%May 1, 2026Yield to maturity5.049%Jul 7, 2026Yield to maturity5.130%Sep 8, 2026Yield to maturity5.333%Sep 10, 2026Yield to maturity5.457%

Price history

1,895 trading days to Sep 10, 2026

6080100120140160Feb 15, 2019Sep 10, 2026Feb 15, 2019Close100.063Apr 22, 2019Close100.094Jun 24, 2019Close109.344Aug 26, 2019Close121.375Oct 29, 2019Close114.188Jan 3, 2020Close115.844Mar 9, 2020Close149.250May 11, 2020Close137.000Jul 14, 2020Close141.094Sep 15, 2020Close137.781Nov 18, 2020Close132.813Jan 25, 2021Close127.781Mar 29, 2021Close112.031May 28, 2021Close115.406Aug 2, 2021Close124.813Oct 4, 2021Close120.219Dec 8, 2021Close123.844Feb 10, 2022Close113.344Apr 14, 2022Close100.469Jun 17, 2022Close92.875Aug 22, 2022Close93.594Oct 25, 2022Close79.031Dec 29, 2022Close83.344Mar 6, 2023Close83.531May 5, 2023Close86.594Jul 11, 2023Close82.063Sep 12, 2023Close77.563Nov 14, 2023Close73.875Jan 19, 2024Close77.344Mar 22, 2024Close77.406May 23, 2024Close75.313Jul 29, 2024Close77.188Sep 30, 2024Close80.781Dec 4, 2024Close77.813Feb 7, 2025Close74.250Apr 11, 2025Close72.250Jun 13, 2025Close72.031Aug 18, 2025Close72.313Oct 21, 2025Close77.094Dec 24, 2025Close74.188Mar 2, 2026Close75.656May 1, 2026Close72.438Jul 7, 2026Close71.688Sep 8, 2026Close69.688Sep 10, 2026Close68.438
The most recent 20 trading days of prices for 912810SF6.
DateBidOfferClose
Sep 10, 202668.79768.75068.438
Sep 9, 202669.28169.25069.438
Sep 8, 202669.84469.81369.688
Sep 4, 202669.85969.81369.813
Sep 3, 202669.93869.90669.781
Sep 2, 202669.54769.50069.531
Sep 1, 202669.81369.78169.531
Aug 31, 202669.68869.65669.781
Aug 28, 202670.45370.40670.125
Aug 27, 202670.53170.50070.375
Aug 26, 202670.51670.50070.469
Aug 25, 202670.56370.53170.625
Aug 24, 202670.17270.15670.000
Aug 21, 202669.64169.62569.531
Aug 20, 202669.81369.78169.969
Aug 19, 202670.21970.18870.313
Aug 18, 202669.15669.12569.281
Aug 17, 202669.28169.25069.031
Aug 14, 202669.50069.46969.531
Aug 13, 202670.03170.00070.031

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 912810SF6.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Feb 7, 2019Feb 15, 2019New issue$19.0bn$23.6bn2.27x3.022%
Mar 13, 2019Mar 15, 2019Reopening$16.0bn$16.0bn2.25x3.014%
Apr 11, 2019Apr 15, 2019Reopening$16.0bn$16.0bn2.25x2.930%

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.