Treasury bill · Matured

912797RB5

Original term
17-Week
Maturity
Oct 7, 2025
Coupon
–
Pays
None
Dated
–
First coupon
–
Priced through
Oct 6, 2025
Analyzed through
Oct 3, 2025

Still priced, no longer analyzed. Risk numbers below are as of Oct 3, 2025, analytics stop about three months before maturity, because a security with one cashflow left does not have a meaningful yield curve exposure.

Risk, October 3, 2025

Yield to maturity
4.096%
Modified duration
0.003 yr
DV01
0.0000
Convexity
0.000
Dirty price
99.989

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 0.003 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 0.02 cents per 100 of face rich to the curve on that day.

Shown as a price rather than a yield. This bill is 4 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, 81 observations

4.05%4.10%4.15%4.20%4.25%4.30%4.35%4.40%Jun 10, 2025Oct 3, 2025Jun 10, 2025Yield to maturity4.349%Jun 12, 2025Yield to maturity4.348%Jun 16, 2025Yield to maturity4.346%Jun 18, 2025Yield to maturity4.355%Jun 23, 2025Yield to maturity4.322%Jun 25, 2025Yield to maturity4.321%Jun 27, 2025Yield to maturity4.318%Jul 1, 2025Yield to maturity4.317%Jul 3, 2025Yield to maturity4.367%Jul 8, 2025Yield to maturity4.355%Jul 10, 2025Yield to maturity4.344%Jul 14, 2025Yield to maturity4.342%Jul 16, 2025Yield to maturity4.341%Jul 18, 2025Yield to maturity4.349%Jul 22, 2025Yield to maturity4.338%Jul 24, 2025Yield to maturity4.337%Jul 28, 2025Yield to maturity4.345%Jul 30, 2025Yield to maturity4.354%Aug 1, 2025Yield to maturity4.332%Aug 5, 2025Yield to maturity4.320%Aug 7, 2025Yield to maturity4.309%Aug 11, 2025Yield to maturity4.307%Aug 13, 2025Yield to maturity4.265%Aug 15, 2025Yield to maturity4.283%Aug 19, 2025Yield to maturity4.282%Aug 21, 2025Yield to maturity4.322%Aug 25, 2025Yield to maturity4.310%Aug 27, 2025Yield to maturity4.289%Aug 29, 2025Yield to maturity4.276%Sep 3, 2025Yield to maturity4.254%Sep 5, 2025Yield to maturity4.171%Sep 9, 2025Yield to maturity4.160%Sep 11, 2025Yield to maturity4.148%Sep 15, 2025Yield to maturity4.147%Sep 17, 2025Yield to maturity4.074%Sep 19, 2025Yield to maturity4.062%Sep 23, 2025Yield to maturity4.072%Sep 25, 2025Yield to maturity4.091%Sep 29, 2025Yield to maturity4.089%Oct 1, 2025Yield to maturity4.109%Oct 3, 2025Yield to maturity4.096%

Price history

82 trading days to Oct 6, 2025

98.5098.7599.0099.2599.5099.75100.00Jun 10, 2025Oct 6, 2025Jun 10, 2025Close98.614Jun 12, 2025Close98.637Jun 16, 2025Close98.684Jun 18, 2025Close98.716Jun 23, 2025Close98.772Jun 25, 2025Close98.795Jun 27, 2025Close98.842Jul 1, 2025Close98.866Jul 3, 2025Close98.911Jul 8, 2025Close98.938Jul 10, 2025Close98.964Jul 14, 2025Close99.011Jul 16, 2025Close99.034Jul 18, 2025Close99.079Jul 22, 2025Close99.105Jul 24, 2025Close99.128Jul 28, 2025Close99.174Jul 30, 2025Close99.195Aug 1, 2025Close99.246Aug 5, 2025Close99.272Aug 7, 2025Close99.297Aug 11, 2025Close99.344Aug 13, 2025Close99.373Aug 15, 2025Close99.417Aug 19, 2025Close99.440Aug 21, 2025Close99.458Aug 25, 2025Close99.507Aug 27, 2025Close99.532Aug 29, 2025Close99.592Sep 3, 2025Close99.617Sep 5, 2025Close99.670Sep 9, 2025Close99.693Sep 11, 2025Close99.717Sep 15, 2025Close99.762Sep 17, 2025Close99.788Sep 19, 2025Close99.833Sep 23, 2025Close99.855Sep 25, 2025Close99.877Sep 29, 2025Close99.922Oct 1, 2025Close99.944Oct 3, 2025Close99.989Oct 6, 2025Close100.000
The most recent 20 trading days of prices for 912797RB5.
DateBidOfferClose
Oct 6, 2025–99.989100.000
Oct 3, 2025–99.95599.989
Oct 2, 2025–99.94499.955
Oct 1, 2025–99.93399.944
Sep 30, 202599.92299.92299.932
Sep 29, 202599.91199.91099.922
Sep 26, 202599.87799.87799.910
Sep 25, 202599.86699.86599.877
Sep 24, 202599.85599.85599.866
Sep 23, 202599.84499.84499.855
Sep 22, 202599.83299.83299.843
Sep 19, 202599.80199.79999.833
Sep 18, 202599.79099.78999.800
Sep 17, 202599.77899.77799.788
Sep 16, 202599.76599.76499.775
Sep 15, 202599.75199.75099.762
Sep 12, 202599.71599.71399.748
Sep 11, 202599.70799.70699.717
Sep 10, 202599.69499.69499.705
Sep 9, 202599.68299.68299.693

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 912797RB5.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Jun 4, 2025Jun 10, 2025New issue$60.0bn$60.2bn3.13x–
Aug 7, 2025Aug 12, 2025Reopening$85.0bn$85.2bn3.16x–
Sep 4, 2025Sep 9, 2025Reopening$100.0bn$100.3bn2.78x–

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.