A floating-rate note resets quarterly against the 13-week bill, so it has no yield to maturity: the cashflow schedule a yield would describe does not exist. What it has instead is a spread, the margin a buyer earns over that reference rate, and a sensitivity to that spread rather than to the level of rates.
Discount margin
-2.7 bp
Spread at auction
27.2 bp
Index rate
1.430%
Spread duration
0.003 yr
Spread DV01
0.0000
Clean price
100.001
Accrued
0.405
Dirty price
100.406
Rate duration
0.0000 yr
Rate duration is almost zero, and that is the instrument rather than a missing number: because the coupon resets, the price barely moves when the level of rates moves. Spread duration is the one that matters here. It says how much the price moves if the market demands a wider margin.
Its current margin is -0.42 standard deviations from its own typical margin.
Discount margin, 500 observations
Price history
501 trading days to Jan 30, 2018
The most recent 20 trading days of prices for 912828N97.
Date
Bid
Offer
Close
Jan 30, 2018
–
100.001
100.000
Jan 29, 2018
–
100.001
100.001
Jan 26, 2018
–
100.002
100.002
Jan 25, 2018
–
100.004
100.004
Jan 24, 2018
–
100.005
100.005
Jan 23, 2018
–
100.006
100.006
Jan 22, 2018
–
100.007
100.007
Jan 19, 2018
–
100.008
100.008
Jan 18, 2018
–
100.011
100.011
Jan 17, 2018
–
100.012
100.012
Jan 16, 2018
–
100.013
100.013
Jan 12, 2018
–
100.014
100.013
Jan 11, 2018
–
100.018
100.016
Jan 10, 2018
–
100.018
100.017
Jan 9, 2018
–
100.019
100.018
Jan 8, 2018
–
100.020
100.019
Jan 5, 2018
–
100.021
100.019
Jan 4, 2018
–
100.023
100.022
Jan 3, 2018
–
100.024
100.023
Jan 2, 2018
–
100.025
100.025
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.
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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