Treasury bill

912797WB9

Original term
26-Week
Maturity
Feb 11, 2027
Coupon
–
Pays
None
Dated
–
First coupon
–
Priced through
Sep 10, 2026
Analyzed through
Sep 10, 2026

Statement of August 31, 2026

Amount outstanding
$83.78bn
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, September 10, 2026

Yield to maturity
4.042%
Modified duration
0.412 yr
DV01
0.0041
Convexity
0.340
Dirty price
98.334

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 0.412 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 0.3 bp rich to the curve on that day, 0.13 cents per 100 of face.

Not scored against its own history. The z-score is written by a separate pass, and a security needs twenty observations before one is meaningful, so a new issue carries none for roughly its first month. An absent score is not evidence that a security is fairly priced.

Yield to maturity, 20 observations

3.90%3.92%3.95%3.98%4.00%4.03%4.05%Aug 13, 2026Sep 10, 2026Aug 13, 2026Yield to maturity3.907%Aug 14, 2026Yield to maturity3.916%Aug 17, 2026Yield to maturity3.916%Aug 18, 2026Yield to maturity3.905%Aug 19, 2026Yield to maturity3.904%Aug 20, 2026Yield to maturity3.904%Aug 21, 2026Yield to maturity3.924%Aug 24, 2026Yield to maturity3.913%Aug 25, 2026Yield to maturity3.912%Aug 26, 2026Yield to maturity3.901%Aug 27, 2026Yield to maturity3.901%Aug 28, 2026Yield to maturity3.963%Aug 31, 2026Yield to maturity3.973%Sep 1, 2026Yield to maturity3.983%Sep 2, 2026Yield to maturity3.982%Sep 3, 2026Yield to maturity3.950%Sep 4, 2026Yield to maturity3.970%Sep 8, 2026Yield to maturity3.969%Sep 9, 2026Yield to maturity3.990%Sep 10, 2026Yield to maturity4.042%

Price history

20 trading days to Sep 10, 2026

98.0598.1098.1598.2098.2598.3098.35Aug 13, 2026Sep 10, 2026Aug 13, 2026Close98.100Aug 14, 2026Close98.126Aug 17, 2026Close98.137Aug 18, 2026Close98.152Aug 19, 2026Close98.162Aug 20, 2026Close98.173Aug 21, 2026Close98.195Aug 24, 2026Close98.210Aug 25, 2026Close98.221Aug 26, 2026Close98.236Aug 27, 2026Close98.246Aug 28, 2026Close98.251Aug 31, 2026Close98.257Sep 1, 2026Close98.263Sep 2, 2026Close98.274Sep 3, 2026Close98.298Sep 4, 2026Close98.332Sep 8, 2026Close98.342Sep 9, 2026Close98.344Sep 10, 2026Close98.334
The most recent 20 trading days of prices for 912797WB9.
DateBidOfferClose
Sep 10, 202698.33498.32798.334
Sep 9, 202698.33898.33498.344
Sep 8, 202698.33498.33298.342
Sep 4, 202698.29198.28998.332
Sep 3, 202698.29498.29298.298
Sep 2, 202698.26598.26398.274
Sep 1, 202698.25998.25798.263
Aug 31, 202698.25598.25198.257
Aug 28, 202698.22398.21998.251
Aug 27, 202698.24398.24198.246
Aug 26, 202698.22898.22598.236
Aug 25, 202698.21398.21098.221
Aug 24, 202698.19798.19598.210
Aug 21, 202698.16698.16398.195
Aug 20, 202698.16598.16298.173
Aug 19, 202698.15498.15298.162
Aug 18, 202698.14498.14198.152
Aug 17, 202698.13198.12698.137
Aug 14, 202698.10298.10098.126
Aug 13, 202698.09298.08998.100

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.

Auction

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 912797WB9.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Aug 10, 2026Aug 13, 2026New issue$79.0bn$83.8bn2.85x–

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.