Treasury bill

912797SK4

Original term
52-Week
Maturity
Oct 29, 2026
Coupon
–
Pays
None
Dated
–
First coupon
–
Priced through
Oct 20, 2026
Analyzed through
Oct 20, 2026

Statement of September 30, 2026

Amount outstanding
$315.29bn
Held stripped
not strippable
Share stripped
–

This security cannot be stripped, so no stripped figure exists for it rather than one that is zero. Stripping separates a coupon security into its individual interest and principal payments, which needs more than one cashflow to separate. 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, October 20, 2026

Yield to maturity
3.856%
Modified duration
0.022 yr
DV01
0.0002
Convexity
0.00000959
Dirty price
99.916

Where its rate sensitivity sits

All of it in one place. A bill pays a single cashflow at maturity, so its key rate profile is its modified duration of 0.022 years, sitting in the nearest bucket and nothing anywhere else. That is also why its duration equals its remaining term rather than being shorter: there are no coupons to pull the average payment date forward. A twelve-bucket chart of that would be eleven empty bars.

Against the money market curve

Priced 0.17 cents per 100 of face rich to the curve on that day.

Shown as a price rather than a yield. This bill is 9 days from redemption, and inside a month the difference between its price and the curve annualizes into a number that looks like an enormous mispricing rather than the fraction of a cent it is: worst case across eighteen years, 1,435 basis points on a residual of four cents. Its yield above is unaffected and stands: a bill quotes on an investment-rate basis, which is the market's own convention rather than an annualized stub.

Yield to maturity, 243 observations

3.4%3.5%3.6%3.7%3.8%3.9%4.0%Oct 30, 2025Oct 20, 2026Oct 30, 2025Yield to maturity3.699%Nov 3, 2025Yield to maturity3.698%Nov 5, 2025Yield to maturity3.708%Nov 7, 2025Yield to maturity3.632%Nov 12, 2025Yield to maturity3.653%Nov 14, 2025Yield to maturity3.705%Nov 18, 2025Yield to maturity3.672%Nov 20, 2025Yield to maturity3.661%Nov 24, 2025Yield to maturity3.628%Nov 26, 2025Yield to maturity3.627%Dec 1, 2025Yield to maturity3.648%Dec 3, 2025Yield to maturity3.594%Dec 5, 2025Yield to maturity3.625%Dec 9, 2025Yield to maturity3.646%Dec 11, 2025Yield to maturity3.571%Dec 15, 2025Yield to maturity3.538%Dec 17, 2025Yield to maturity3.527%Dec 19, 2025Yield to maturity3.526%Dec 23, 2025Yield to maturity3.536%Dec 26, 2025Yield to maturity3.514%Dec 30, 2025Yield to maturity3.492%Jan 2, 2026Yield to maturity3.512%Jan 6, 2026Yield to maturity3.522%Jan 8, 2026Yield to maturity3.511%Jan 12, 2026Yield to maturity3.553%Jan 14, 2026Yield to maturity3.542%Jan 16, 2026Yield to maturity3.573%Jan 21, 2026Yield to maturity3.572%Jan 23, 2026Yield to maturity3.582%Jan 27, 2026Yield to maturity3.571%Jan 29, 2026Yield to maturity3.560%Feb 2, 2026Yield to maturity3.559%Feb 4, 2026Yield to maturity3.559%Feb 6, 2026Yield to maturity3.537%Feb 10, 2026Yield to maturity3.505%Feb 12, 2026Yield to maturity3.547%Feb 17, 2026Yield to maturity3.546%Feb 19, 2026Yield to maturity3.546%Feb 23, 2026Yield to maturity3.577%Feb 25, 2026Yield to maturity3.576%Feb 27, 2026Yield to maturity3.544%Mar 3, 2026Yield to maturity3.596%Mar 5, 2026Yield to maturity3.617%Mar 9, 2026Yield to maturity3.617%Mar 11, 2026Yield to maturity3.616%Mar 13, 2026Yield to maturity3.647%Mar 17, 2026Yield to maturity3.647%Mar 19, 2026Yield to maturity3.689%Mar 23, 2026Yield to maturity3.720%Mar 25, 2026Yield to maturity3.730%Mar 27, 2026Yield to maturity3.709%Mar 31, 2026Yield to maturity3.698%Apr 2, 2026Yield to maturity3.677%Apr 6, 2026Yield to maturity3.708%Apr 8, 2026Yield to maturity3.708%Apr 10, 2026Yield to maturity3.708%Apr 14, 2026Yield to maturity3.718%Apr 16, 2026Yield to maturity3.687%Apr 20, 2026Yield to maturity3.697%Apr 22, 2026Yield to maturity3.707%Apr 24, 2026Yield to maturity3.697%Apr 28, 2026Yield to maturity3.718%Apr 30, 2026Yield to maturity3.696%May 4, 2026Yield to maturity3.726%May 6, 2026Yield to maturity3.694%May 8, 2026Yield to maturity3.703%May 12, 2026Yield to maturity3.734%May 14, 2026Yield to maturity3.722%May 18, 2026Yield to maturity3.721%May 20, 2026Yield to maturity3.710%May 22, 2026Yield to maturity3.739%May 27, 2026Yield to maturity3.749%May 29, 2026Yield to maturity3.758%Jun 2, 2026Yield to maturity3.736%Jun 4, 2026Yield to maturity3.735%Jun 8, 2026Yield to maturity3.765%Jun 10, 2026Yield to maturity3.764%Jun 12, 2026Yield to maturity3.742%Jun 16, 2026Yield to maturity3.752%Jun 18, 2026Yield to maturity3.812%Jun 23, 2026Yield to maturity3.843%Jun 25, 2026Yield to maturity3.852%Jun 29, 2026Yield to maturity3.861%Jul 1, 2026Yield to maturity3.860%Jul 6, 2026Yield to maturity3.837%Jul 8, 2026Yield to maturity3.847%Jul 10, 2026Yield to maturity3.835%Jul 14, 2026Yield to maturity3.824%Jul 16, 2026Yield to maturity3.823%Jul 20, 2026Yield to maturity3.811%Jul 22, 2026Yield to maturity3.862%Jul 24, 2026Yield to maturity3.922%Jul 28, 2026Yield to maturity3.860%Jul 30, 2026Yield to maturity3.776%Aug 3, 2026Yield to maturity3.795%Aug 5, 2026Yield to maturity3.794%Aug 7, 2026Yield to maturity3.772%Aug 11, 2026Yield to maturity3.792%Aug 13, 2026Yield to maturity3.771%Aug 17, 2026Yield to maturity3.769%Aug 19, 2026Yield to maturity3.768%Aug 21, 2026Yield to maturity3.767%Aug 25, 2026Yield to maturity3.756%Aug 27, 2026Yield to maturity3.755%Aug 31, 2026Yield to maturity3.835%Sep 2, 2026Yield to maturity3.824%Sep 4, 2026Yield to maturity3.792%Sep 9, 2026Yield to maturity3.811%Sep 11, 2026Yield to maturity3.902%Sep 15, 2026Yield to maturity3.911%Sep 17, 2026Yield to maturity3.890%Sep 21, 2026Yield to maturity3.899%Sep 23, 2026Yield to maturity3.908%Sep 25, 2026Yield to maturity3.937%Sep 29, 2026Yield to maturity3.936%Oct 1, 2026Yield to maturity3.894%Oct 5, 2026Yield to maturity3.913%Oct 7, 2026Yield to maturity3.892%Oct 9, 2026Yield to maturity3.910%Oct 14, 2026Yield to maturity3.889%Oct 16, 2026Yield to maturity3.867%Oct 20, 2026Yield to maturity3.856%

Price history

243 trading days to Oct 20, 2026

96979899100Oct 30, 2025Oct 20, 2026Oct 30, 2025Close96.420Nov 3, 2025Close96.460Nov 5, 2025Close96.470Nov 7, 2025Close96.578Nov 12, 2025Close96.588Nov 14, 2025Close96.578Nov 18, 2025Close96.627Nov 20, 2025Close96.656Nov 24, 2025Close96.723Nov 26, 2025Close96.752Dec 1, 2025Close96.773Dec 3, 2025Close96.838Dec 5, 2025Close96.849Dec 9, 2025Close96.851Dec 11, 2025Close96.933Dec 15, 2025Close96.997Dec 17, 2025Close97.025Dec 19, 2025Close97.063Dec 23, 2025Close97.073Dec 26, 2025Close97.137Dec 30, 2025Close97.173Jan 2, 2026Close97.203Jan 6, 2026Close97.214Jan 8, 2026Close97.241Jan 12, 2026Close97.246Jan 14, 2026Close97.273Jan 16, 2026Close97.297Jan 21, 2026Close97.317Jan 23, 2026Close97.347Jan 27, 2026Close97.374Jan 29, 2026Close97.401Feb 2, 2026Close97.439Feb 4, 2026Close97.458Feb 6, 2026Close97.511Feb 10, 2026Close97.552Feb 12, 2026Close97.542Feb 17, 2026Close97.589Feb 19, 2026Close97.609Feb 23, 2026Close97.626Feb 25, 2026Close97.645Feb 27, 2026Close97.704Mar 3, 2026Close97.690Mar 5, 2026Close97.696Mar 9, 2026Close97.735Mar 11, 2026Close97.754Mar 13, 2026Close97.774Mar 17, 2026Close97.794Mar 19, 2026Close97.789Mar 23, 2026Close97.810Mar 25, 2026Close97.824Mar 27, 2026Close97.876Mar 31, 2026Close97.902Apr 2, 2026Close97.933Apr 6, 2026Close97.956Apr 8, 2026Close97.976Apr 10, 2026Close98.016Apr 14, 2026Close98.030Apr 16, 2026Close98.066Apr 20, 2026Close98.101Apr 22, 2026Close98.115Apr 24, 2026Close98.160Apr 28, 2026Close98.170Apr 30, 2026Close98.200May 4, 2026Close98.225May 6, 2026Close98.260May 8, 2026Close98.295May 12, 2026Close98.301May 14, 2026Close98.325May 18, 2026Close98.365May 20, 2026Close98.390May 22, 2026Close98.427May 27, 2026Close98.443May 29, 2026Close98.479Jun 2, 2026Close98.508Jun 4, 2026Close98.528Jun 8, 2026Close98.556Jun 10, 2026Close98.577Jun 12, 2026Close98.625Jun 16, 2026Close98.641Jun 18, 2026Close98.671Jun 23, 2026Close98.681Jun 25, 2026Close98.698Jun 29, 2026Close98.736Jul 1, 2026Close98.757Jul 6, 2026Close98.816Jul 8, 2026Close98.833Jul 10, 2026Close98.878Jul 14, 2026Close98.902Jul 16, 2026Close98.922Jul 20, 2026Close98.967Jul 22, 2026Close98.974Jul 24, 2026Close99.000Jul 28, 2026Close99.037Jul 30, 2026Close99.078Aug 3, 2026Close99.114Aug 5, 2026Close99.134Aug 7, 2026Close99.180Aug 11, 2026Close99.196Aug 13, 2026Close99.221Aug 17, 2026Close99.262Aug 19, 2026Close99.282Aug 21, 2026Close99.323Aug 25, 2026Close99.346Aug 27, 2026Close99.366Aug 31, 2026Close99.394Sep 2, 2026Close99.417Sep 4, 2026Close99.473Sep 9, 2026Close99.491Sep 11, 2026Close99.521Sep 15, 2026Close99.541Sep 17, 2026Close99.565Sep 21, 2026Close99.606Sep 23, 2026Close99.627Sep 25, 2026Close99.667Sep 29, 2026Close99.688Oct 1, 2026Close99.713Oct 5, 2026Close99.754Oct 7, 2026Close99.777Oct 9, 2026Close99.829Oct 14, 2026Close99.851Oct 16, 2026Close99.894Oct 20, 2026Close99.916
The most recent 20 trading days of prices for 912797SK4.
DateBidOfferClose
Oct 20, 202699.90599.90599.916
Oct 19, 202699.89499.89499.904
Oct 16, 202699.86399.86299.894
Oct 15, 202699.85199.85199.862
Oct 14, 202699.84199.84099.851
Oct 13, 202699.83099.83099.840
Oct 9, 202699.78799.78799.829
Oct 8, 202699.77699.77599.787
Oct 7, 202699.76699.76599.777
Oct 6, 202699.75699.75599.766
Oct 5, 202699.74599.74599.754
Oct 2, 202699.71499.71399.745
Oct 1, 202699.70399.70199.713
Sep 30, 202699.69099.68999.700
Sep 29, 202699.67899.67799.688
Sep 28, 202699.66599.66599.677
Sep 25, 202699.63699.63599.667
Sep 24, 202699.62899.62799.638
Sep 23, 202699.61899.61799.627
Sep 22, 202699.60799.60699.618

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.

4 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 912797SK4.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Oct 28, 2025Oct 30, 2025New issue$50.0bn$52.8bn3.21x–
Apr 27, 2026Apr 30, 2026Reopening$77.0bn$82.3bn2.95x–
Jul 27, 2026Jul 30, 2026Reopening$92.0bn$98.5bn3.06x–
Sep 15, 2026Sep 17, 2026Reopening$75.0bn$81.7bn3.16x–

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.