Treasury bond

912810UK2 · 4.75% due May 15, 2055

Original term
30-Year
Maturity
May 15, 2055
Coupon
4.750%
Pays
Semi-Annual
Dated
May 15, 2025
First coupon
Nov 15, 2025
Priced through
Sep 9, 2026
Analyzed through
Sep 9, 2026

Statement of August 31, 2026

Amount outstanding
$80.80bn
Held stripped
$15.80bn
Share stripped
19.56%

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
5.299%
Modified duration
14.752 yr
DV01
0.1379
Convexity
324.624
Dirty price
93.461

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 12 of twelve buckets, summing to 14.864 years against a modified duration of 14.752.

Against the fitted curve

Priced 0.1 bp cheap to the curve on that day, 0.97 cents per 100 of face.

That is 0.94 standard deviations from its own typical residual.

Yield to maturity, 330 observations

4.4%4.6%4.8%5.0%5.2%5.4%May 15, 2025Sep 9, 2026May 15, 2025Yield to maturity4.914%May 19, 2025Yield to maturity4.922%May 21, 2025Yield to maturity5.078%May 23, 2025Yield to maturity5.038%May 28, 2025Yield to maturity4.972%May 30, 2025Yield to maturity4.926%Jun 3, 2025Yield to maturity4.986%Jun 5, 2025Yield to maturity4.884%Jun 9, 2025Yield to maturity4.955%Jun 11, 2025Yield to maturity4.910%Jun 13, 2025Yield to maturity4.908%Jun 17, 2025Yield to maturity4.886%Jun 20, 2025Yield to maturity4.892%Jun 24, 2025Yield to maturity4.831%Jun 26, 2025Yield to maturity4.815%Jun 30, 2025Yield to maturity4.779%Jul 2, 2025Yield to maturity4.823%Jul 7, 2025Yield to maturity4.924%Jul 9, 2025Yield to maturity4.871%Jul 11, 2025Yield to maturity4.964%Jul 15, 2025Yield to maturity5.016%Jul 17, 2025Yield to maturity5.014%Jul 21, 2025Yield to maturity4.939%Jul 23, 2025Yield to maturity4.947%Jul 25, 2025Yield to maturity4.924%Jul 29, 2025Yield to maturity4.863%Jul 31, 2025Yield to maturity4.890%Aug 4, 2025Yield to maturity4.797%Aug 6, 2025Yield to maturity4.811%Aug 8, 2025Yield to maturity4.857%Aug 12, 2025Yield to maturity4.886%Aug 14, 2025Yield to maturity4.882%Aug 18, 2025Yield to maturity4.943%Aug 20, 2025Yield to maturity4.898%Aug 22, 2025Yield to maturity4.884%Aug 26, 2025Yield to maturity4.908%Aug 28, 2025Yield to maturity4.882%Sep 2, 2025Yield to maturity4.976%Sep 4, 2025Yield to maturity4.864%Sep 8, 2025Yield to maturity4.691%Sep 10, 2025Yield to maturity4.689%Sep 12, 2025Yield to maturity4.679%Sep 16, 2025Yield to maturity4.648%Sep 18, 2025Yield to maturity4.724%Sep 22, 2025Yield to maturity4.765%Sep 24, 2025Yield to maturity4.760%Sep 26, 2025Yield to maturity4.769%Sep 30, 2025Yield to maturity4.734%Oct 2, 2025Yield to maturity4.697%Oct 6, 2025Yield to maturity4.766%Oct 8, 2025Yield to maturity4.726%Oct 10, 2025Yield to maturity4.633%Oct 15, 2025Yield to maturity4.638%Oct 17, 2025Yield to maturity4.600%Oct 21, 2025Yield to maturity4.547%Oct 23, 2025Yield to maturity4.581%Oct 27, 2025Yield to maturity4.570%Oct 29, 2025Yield to maturity4.606%Oct 31, 2025Yield to maturity4.668%Nov 4, 2025Yield to maturity4.670%Nov 6, 2025Yield to maturity4.689%Nov 10, 2025Yield to maturity4.709%Nov 13, 2025Yield to maturity4.709%Nov 17, 2025Yield to maturity4.736%Nov 19, 2025Yield to maturity4.754%Nov 21, 2025Yield to maturity4.718%Nov 25, 2025Yield to maturity4.671%Nov 28, 2025Yield to maturity4.669%Dec 2, 2025Yield to maturity4.744%Dec 4, 2025Yield to maturity4.768%Dec 8, 2025Yield to maturity4.816%Dec 10, 2025Yield to maturity4.788%Dec 12, 2025Yield to maturity4.862%Dec 16, 2025Yield to maturity4.822%Dec 18, 2025Yield to maturity4.802%Dec 22, 2025Yield to maturity4.844%Dec 24, 2025Yield to maturity4.800%Dec 29, 2025Yield to maturity4.806%Dec 31, 2025Yield to maturity4.850%Jan 5, 2026Yield to maturity4.854%Jan 7, 2026Yield to maturity4.822%Jan 9, 2026Yield to maturity4.822%Jan 13, 2026Yield to maturity4.834%Jan 15, 2026Yield to maturity4.793%Jan 20, 2026Yield to maturity4.920%Jan 22, 2026Yield to maturity4.848%Jan 26, 2026Yield to maturity4.806%Jan 28, 2026Yield to maturity4.862%Jan 30, 2026Yield to maturity4.879%Feb 3, 2026Yield to maturity4.903%Feb 5, 2026Yield to maturity4.858%Feb 9, 2026Yield to maturity4.854%Feb 11, 2026Yield to maturity4.822%Feb 13, 2026Yield to maturity4.702%Feb 18, 2026Yield to maturity4.720%Feb 20, 2026Yield to maturity4.730%Feb 24, 2026Yield to maturity4.704%Feb 26, 2026Yield to maturity4.673%Mar 2, 2026Yield to maturity4.704%Mar 4, 2026Yield to maturity4.728%Mar 6, 2026Yield to maturity4.776%Mar 10, 2026Yield to maturity4.784%Mar 12, 2026Yield to maturity4.891%Mar 16, 2026Yield to maturity4.869%Mar 18, 2026Yield to maturity4.889%Mar 20, 2026Yield to maturity4.972%Mar 24, 2026Yield to maturity4.949%Mar 26, 2026Yield to maturity4.945%Mar 30, 2026Yield to maturity4.920%Apr 1, 2026Yield to maturity4.926%Apr 3, 2026Yield to maturity4.927%Apr 7, 2026Yield to maturity4.914%Apr 9, 2026Yield to maturity4.910%Apr 13, 2026Yield to maturity4.908%Apr 15, 2026Yield to maturity4.902%Apr 17, 2026Yield to maturity4.896%Apr 21, 2026Yield to maturity4.902%Apr 23, 2026Yield to maturity4.931%Apr 27, 2026Yield to maturity4.954%Apr 29, 2026Yield to maturity4.992%May 1, 2026Yield to maturity4.979%May 5, 2026Yield to maturity4.996%May 7, 2026Yield to maturity4.986%May 11, 2026Yield to maturity4.996%May 13, 2026Yield to maturity5.054%May 15, 2026Yield to maturity5.142%May 19, 2026Yield to maturity5.195%May 21, 2026Yield to maturity5.112%May 26, 2026Yield to maturity5.045%May 28, 2026Yield to maturity5.000%Jun 1, 2026Yield to maturity5.005%Jun 3, 2026Yield to maturity5.007%Jun 5, 2026Yield to maturity5.024%Jun 9, 2026Yield to maturity5.024%Jun 11, 2026Yield to maturity4.965%Jun 15, 2026Yield to maturity4.984%Jun 17, 2026Yield to maturity4.948%Jun 22, 2026Yield to maturity4.958%Jun 24, 2026Yield to maturity4.873%Jun 26, 2026Yield to maturity4.880%Jun 30, 2026Yield to maturity4.929%Jul 2, 2026Yield to maturity5.001%Jul 7, 2026Yield to maturity5.062%Jul 9, 2026Yield to maturity5.071%Jul 13, 2026Yield to maturity5.116%Jul 15, 2026Yield to maturity5.093%Jul 17, 2026Yield to maturity5.080%Jul 21, 2026Yield to maturity5.147%Jul 23, 2026Yield to maturity5.187%Jul 27, 2026Yield to maturity5.141%Jul 29, 2026Yield to maturity5.220%Jul 31, 2026Yield to maturity5.287%Aug 4, 2026Yield to maturity5.205%Aug 6, 2026Yield to maturity5.233%Aug 10, 2026Yield to maturity5.267%Aug 12, 2026Yield to maturity5.265%Aug 14, 2026Yield to maturity5.276%Aug 18, 2026Yield to maturity5.308%Aug 20, 2026Yield to maturity5.249%Aug 24, 2026Yield to maturity5.250%Aug 26, 2026Yield to maturity5.201%Aug 28, 2026Yield to maturity5.234%Sep 1, 2026Yield to maturity5.286%Sep 3, 2026Yield to maturity5.265%Sep 8, 2026Yield to maturity5.272%Sep 9, 2026Yield to maturity5.299%

Price history

330 trading days to Sep 9, 2026

90.092.595.097.5100.0102.5105.0May 15, 2025Sep 9, 2026May 15, 2025Close97.438May 19, 2025Close97.313May 21, 2025Close94.969May 23, 2025Close95.563May 28, 2025Close96.563May 30, 2025Close97.250Jun 3, 2025Close96.344Jun 5, 2025Close97.906Jun 9, 2025Close96.813Jun 11, 2025Close97.500Jun 13, 2025Close97.531Jun 17, 2025Close97.875Jun 20, 2025Close97.781Jun 24, 2025Close98.719Jun 26, 2025Close98.969Jun 30, 2025Close99.531Jul 2, 2025Close98.844Jul 7, 2025Close97.281Jul 9, 2025Close98.094Jul 11, 2025Close96.688Jul 15, 2025Close95.906Jul 17, 2025Close95.938Jul 21, 2025Close97.063Jul 23, 2025Close96.938Jul 25, 2025Close97.281Jul 29, 2025Close98.219Jul 31, 2025Close97.813Aug 4, 2025Close99.250Aug 6, 2025Close99.031Aug 8, 2025Close98.313Aug 12, 2025Close97.875Aug 14, 2025Close97.938Aug 18, 2025Close97.000Aug 20, 2025Close97.688Aug 22, 2025Close97.906Aug 26, 2025Close97.531Aug 28, 2025Close97.938Sep 2, 2025Close96.500Sep 4, 2025Close98.219Sep 8, 2025Close100.938Sep 10, 2025Close100.969Sep 12, 2025Close101.125Sep 16, 2025Close101.625Sep 18, 2025Close100.406Sep 22, 2025Close99.750Sep 24, 2025Close99.844Sep 26, 2025Close99.688Sep 30, 2025Close100.250Oct 2, 2025Close100.844Oct 6, 2025Close99.750Oct 8, 2025Close100.375Oct 10, 2025Close101.875Oct 15, 2025Close101.781Oct 17, 2025Close102.406Oct 21, 2025Close103.281Oct 23, 2025Close102.719Oct 27, 2025Close102.906Oct 29, 2025Close102.313Oct 31, 2025Close101.313Nov 4, 2025Close101.281Nov 6, 2025Close100.969Nov 10, 2025Close100.656Nov 13, 2025Close100.656Nov 17, 2025Close100.219Nov 19, 2025Close99.938Nov 21, 2025Close100.500Nov 25, 2025Close101.250Nov 28, 2025Close101.281Dec 2, 2025Close100.094Dec 4, 2025Close99.719Dec 8, 2025Close98.969Dec 10, 2025Close99.406Dec 12, 2025Close98.250Dec 16, 2025Close98.875Dec 18, 2025Close99.188Dec 22, 2025Close98.531Dec 24, 2025Close99.219Dec 29, 2025Close99.125Dec 31, 2025Close98.438Jan 5, 2026Close98.375Jan 7, 2026Close98.875Jan 9, 2026Close98.875Jan 13, 2026Close98.688Jan 15, 2026Close99.313Jan 20, 2026Close97.375Jan 22, 2026Close98.469Jan 26, 2026Close99.125Jan 28, 2026Close98.250Jan 30, 2026Close98.000Feb 3, 2026Close97.625Feb 5, 2026Close98.313Feb 9, 2026Close98.375Feb 11, 2026Close98.875Feb 13, 2026Close100.750Feb 18, 2026Close100.469Feb 20, 2026Close100.313Feb 24, 2026Close100.719Feb 26, 2026Close101.219Mar 2, 2026Close100.719Mar 4, 2026Close100.344Mar 6, 2026Close99.594Mar 10, 2026Close99.469Mar 12, 2026Close97.813Mar 16, 2026Close98.156Mar 18, 2026Close97.844Mar 20, 2026Close96.594Mar 24, 2026Close96.938Mar 26, 2026Close97.000Mar 30, 2026Close97.375Apr 1, 2026Close97.281Apr 3, 2026Close97.281Apr 7, 2026Close97.469Apr 9, 2026Close97.531Apr 13, 2026Close97.563Apr 15, 2026Close97.656Apr 17, 2026Close97.750Apr 21, 2026Close97.656Apr 23, 2026Close97.219Apr 27, 2026Close96.875Apr 29, 2026Close96.313May 1, 2026Close96.500May 5, 2026Close96.250May 7, 2026Close96.406May 11, 2026Close96.250May 13, 2026Close95.406May 15, 2026Close94.125May 19, 2026Close93.375May 21, 2026Close94.563May 26, 2026Close95.531May 28, 2026Close96.188Jun 1, 2026Close96.125Jun 3, 2026Close96.094Jun 5, 2026Close95.844Jun 9, 2026Close95.844Jun 11, 2026Close96.719Jun 15, 2026Close96.438Jun 17, 2026Close96.969Jun 22, 2026Close96.813Jun 24, 2026Close98.094Jun 26, 2026Close98.000Jun 30, 2026Close97.250Jul 2, 2026Close96.188Jul 7, 2026Close95.281Jul 9, 2026Close95.156Jul 13, 2026Close94.500Jul 15, 2026Close94.844Jul 17, 2026Close95.031Jul 21, 2026Close94.063Jul 23, 2026Close93.500Jul 27, 2026Close94.156Jul 29, 2026Close93.031Jul 31, 2026Close92.094Aug 4, 2026Close93.250Aug 6, 2026Close92.844Aug 10, 2026Close92.375Aug 12, 2026Close92.406Aug 14, 2026Close92.250Aug 18, 2026Close91.813Aug 20, 2026Close92.625Aug 24, 2026Close92.625Aug 26, 2026Close93.313Aug 28, 2026Close92.844Sep 1, 2026Close92.125Sep 3, 2026Close92.406Sep 8, 2026Close92.313Sep 9, 2026Close91.938
The most recent 20 trading days of prices for 912810UK2.
DateBidOfferClose
Sep 9, 202691.73491.71991.938
Sep 8, 202692.45392.43892.313
Sep 4, 202692.48492.46992.469
Sep 3, 202692.64192.62592.406
Sep 2, 202692.10992.09492.125
Sep 1, 202692.45392.43892.125
Aug 31, 202692.23492.21992.406
Aug 28, 202693.31393.28192.844
Aug 27, 202693.39193.37593.188
Aug 26, 202693.35993.34493.313
Aug 25, 202693.39193.37593.500
Aug 24, 202692.82892.81392.625
Aug 21, 202692.14192.12592.000
Aug 20, 202692.39192.37592.625
Aug 19, 202692.98492.96993.125
Aug 18, 202691.67291.65691.813
Aug 17, 202691.85991.84491.500
Aug 14, 202692.14192.12592.250
Aug 13, 202692.85992.84492.875
Aug 12, 202692.64192.62592.406

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 912810UK2.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
May 8, 2025May 15, 2025New issue$25.0bn$33.8bn2.31x4.819%
Jun 12, 2025Jun 16, 2025Reopening$22.0bn$22.4bn2.43x4.844%
Jul 10, 2025Jul 15, 2025Reopening$22.0bn$24.6bn2.38x4.889%

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.