Treasury bill

912797WF0

Original term
17-Week
Maturity
Dec 15, 2026
Coupon
–
Pays
None
Dated
–
First coupon
–
Priced through
Oct 20, 2026
Analyzed through
Oct 20, 2026

Statement of September 30, 2026

Amount outstanding
$77.35bn
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
4.080%
Modified duration
0.150 yr
DV01
0.0015
Convexity
0.000449
Dirty price
99.389

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 0.150 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 0.7 bp cheap to the curve on that day, 0.10 cents per 100 of face.

That is 1.37 standard deviations from its own typical residual.

Yield to maturity, 44 observations

3.80%3.85%3.90%3.95%4.00%4.05%4.10%4.15%Aug 18, 2026Oct 20, 2026Aug 18, 2026Yield to maturity3.839%Aug 19, 2026Yield to maturity3.839%Aug 20, 2026Yield to maturity3.817%Aug 21, 2026Yield to maturity3.837%Aug 24, 2026Yield to maturity3.837%Aug 25, 2026Yield to maturity3.836%Aug 26, 2026Yield to maturity3.825%Aug 27, 2026Yield to maturity3.815%Aug 28, 2026Yield to maturity3.865%Aug 31, 2026Yield to maturity3.865%Sep 1, 2026Yield to maturity3.875%Sep 2, 2026Yield to maturity3.874%Sep 3, 2026Yield to maturity3.843%Sep 4, 2026Yield to maturity3.852%Sep 8, 2026Yield to maturity3.851%Sep 9, 2026Yield to maturity3.872%Sep 10, 2026Yield to maturity3.912%Sep 11, 2026Yield to maturity3.994%Sep 14, 2026Yield to maturity3.994%Sep 15, 2026Yield to maturity4.014%Sep 16, 2026Yield to maturity4.034%Sep 17, 2026Yield to maturity4.013%Sep 18, 2026Yield to maturity4.022%Sep 21, 2026Yield to maturity4.021%Sep 22, 2026Yield to maturity4.021%Sep 23, 2026Yield to maturity4.062%Sep 24, 2026Yield to maturity4.103%Sep 25, 2026Yield to maturity4.091%Sep 28, 2026Yield to maturity4.091%Sep 29, 2026Yield to maturity4.080%Sep 30, 2026Yield to maturity4.038%Oct 1, 2026Yield to maturity4.017%Oct 2, 2026Yield to maturity4.016%Oct 5, 2026Yield to maturity4.026%Oct 6, 2026Yield to maturity4.025%Oct 7, 2026Yield to maturity4.025%Oct 8, 2026Yield to maturity4.035%Oct 9, 2026Yield to maturity4.043%Oct 13, 2026Yield to maturity4.053%Oct 14, 2026Yield to maturity4.063%Oct 15, 2026Yield to maturity4.093%Oct 16, 2026Yield to maturity4.081%Oct 19, 2026Yield to maturity4.091%Oct 20, 2026Yield to maturity4.080%

Price history

44 trading days to Oct 20, 2026

98.798.898.999.099.199.299.399.4Aug 18, 2026Oct 20, 2026Aug 18, 2026Close98.774Aug 19, 2026Close98.784Aug 20, 2026Close98.801Aug 21, 2026Close98.826Aug 24, 2026Close98.836Aug 25, 2026Close98.847Aug 26, 2026Close98.860Aug 27, 2026Close98.874Aug 28, 2026Close98.890Aug 31, 2026Close98.900Sep 1, 2026Close98.908Sep 2, 2026Close98.918Sep 3, 2026Close98.938Sep 4, 2026Close98.976Sep 8, 2026Close98.987Sep 9, 2026Close98.992Sep 10, 2026Close98.992Sep 11, 2026Close99.003Sep 14, 2026Close99.014Sep 15, 2026Close99.020Sep 16, 2026Close99.026Sep 17, 2026Close99.042Sep 18, 2026Close99.072Sep 21, 2026Close99.083Sep 22, 2026Close99.094Sep 23, 2026Close99.096Sep 24, 2026Close99.098Sep 25, 2026Close99.133Sep 28, 2026Close99.144Sep 29, 2026Close99.158Sep 30, 2026Close99.177Oct 1, 2026Close99.192Oct 2, 2026Close99.225Oct 5, 2026Close99.234Oct 6, 2026Close99.245Oct 7, 2026Close99.256Oct 8, 2026Close99.265Oct 9, 2026Close99.307Oct 13, 2026Close99.316Oct 14, 2026Close99.326Oct 15, 2026Close99.332Oct 16, 2026Close99.367Oct 19, 2026Close99.376Oct 20, 2026Close99.389
The most recent 20 trading days of prices for 912797WF0.
DateBidOfferClose
Oct 20, 202699.37999.37899.389
Oct 19, 202699.36699.36599.376
Oct 16, 202699.33599.33399.367
Oct 15, 202699.32199.32199.332
Oct 14, 202699.31099.30999.326
Oct 13, 202699.30799.30599.316
Oct 9, 202699.26599.26399.307
Oct 8, 202699.25699.25499.265
Oct 7, 202699.24499.24399.256
Oct 6, 202699.23899.23699.245
Oct 5, 202699.22699.22599.234
Oct 2, 202699.19399.19299.225
Oct 1, 202699.17999.17799.192
Sep 30, 202699.16699.16499.177
Sep 29, 202699.14799.14499.158
Sep 28, 202699.13399.13199.144
Sep 25, 202699.10199.10099.133
Sep 24, 202699.09799.09699.098
Sep 23, 202699.08799.08599.096
Sep 22, 202699.08499.08399.094

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.

2 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 912797WF0.
Auction dateIssuedTypeOfferedAcceptedBid to coverHigh yield
Aug 12, 2026Aug 18, 2026New issue$72.0bn$77.4bn3.16x–
Oct 15, 2026Oct 20, 2026Reopening$105.0bn$112.1bn2.26x–

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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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.