The Treasury curve in 2021

The zero curve on each of 251 trading days, at the two, ten and thirty year points.

0.00%0.50%1.00%1.50%2.00%2.50%3.00%Jan 4, 2021Dec 31, 2021Jan 4, 20212Y zero rate0.116%10Y zero rate0.937%30Y zero rate1.741%Jan 12, 20212Y zero rate0.149%10Y zero rate1.181%30Y zero rate1.950%Jan 21, 20212Y zero rate0.117%10Y zero rate1.135%30Y zero rate2.010%Jan 29, 20212Y zero rate0.114%10Y zero rate1.130%30Y zero rate2.006%Feb 8, 20212Y zero rate0.112%10Y zero rate1.205%30Y zero rate2.100%Feb 17, 20212Y zero rate0.120%10Y zero rate1.354%30Y zero rate2.179%Feb 25, 20212Y zero rate0.202%10Y zero rate1.662%30Y zero rate2.467%Mar 5, 20212Y zero rate0.170%10Y zero rate1.662%30Y zero rate2.420%Mar 15, 20212Y zero rate0.175%10Y zero rate1.731%30Y zero rate2.519%Mar 23, 20212Y zero rate0.153%10Y zero rate1.726%30Y zero rate2.486%Mar 31, 20212Y zero rate0.169%10Y zero rate1.828%30Y zero rate2.553%Apr 8, 20212Y zero rate0.157%10Y zero rate1.723%30Y zero rate2.456%Apr 16, 20212Y zero rate0.176%10Y zero rate1.675%30Y zero rate2.385%Apr 26, 20212Y zero rate0.182%10Y zero rate1.666%30Y zero rate2.364%May 4, 20212Y zero rate0.160%10Y zero rate1.681%30Y zero rate2.400%May 12, 20212Y zero rate0.172%10Y zero rate1.779%30Y zero rate2.557%May 20, 20212Y zero rate0.159%10Y zero rate1.725%30Y zero rate2.506%May 28, 20212Y zero rate0.144%10Y zero rate1.669%30Y zero rate2.424%Jun 8, 20212Y zero rate0.155%10Y zero rate1.621%30Y zero rate2.367%Jun 16, 20212Y zero rate0.221%10Y zero rate1.675%30Y zero rate2.338%Jun 24, 20212Y zero rate0.273%10Y zero rate1.591%30Y zero rate2.227%Jul 2, 20212Y zero rate0.252%10Y zero rate1.519%30Y zero rate2.181%Jul 13, 20212Y zero rate0.269%10Y zero rate1.481%30Y zero rate2.171%Jul 21, 20212Y zero rate0.221%10Y zero rate1.356%30Y zero rate2.080%Jul 29, 20212Y zero rate0.206%10Y zero rate1.341%30Y zero rate2.053%Aug 6, 20212Y zero rate0.230%10Y zero rate1.363%30Y zero rate2.090%Aug 16, 20212Y zero rate0.235%10Y zero rate1.324%30Y zero rate2.065%Aug 24, 20212Y zero rate0.258%10Y zero rate1.351%30Y zero rate2.047%Sep 1, 20212Y zero rate0.230%10Y zero rate1.364%30Y zero rate2.055%Sep 10, 20212Y zero rate0.244%10Y zero rate1.403%30Y zero rate2.084%Sep 20, 20212Y zero rate0.249%10Y zero rate1.369%30Y zero rate1.983%Sep 28, 20212Y zero rate0.323%10Y zero rate1.618%30Y zero rate2.211%Oct 6, 20212Y zero rate0.315%10Y zero rate1.604%30Y zero rate2.218%Oct 15, 20212Y zero rate0.427%10Y zero rate1.673%30Y zero rate2.135%Oct 25, 20212Y zero rate0.481%10Y zero rate1.707%30Y zero rate2.201%Nov 2, 20212Y zero rate0.477%10Y zero rate1.637%30Y zero rate2.073%Nov 10, 20212Y zero rate0.556%10Y zero rate1.639%30Y zero rate2.034%Nov 19, 20212Y zero rate0.569%10Y zero rate1.620%30Y zero rate2.055%Nov 30, 20212Y zero rate0.553%10Y zero rate1.535%30Y zero rate1.901%Dec 8, 20212Y zero rate0.721%10Y zero rate1.590%30Y zero rate2.034%Dec 16, 20212Y zero rate0.676%10Y zero rate1.514%30Y zero rate2.055%Dec 27, 20212Y zero rate0.775%10Y zero rate1.563%30Y zero rate2.051%Dec 31, 20212Y zero rate0.758%10Y zero rate1.595%30Y zero rate1.992%
2Y zero rate10Y zero rate30Y zero rate
Zero rate first, last, low and high for each charted tenor across 2021.
TenorFirstLastChangeLowHigh
2Y0.116%0.758%+64.2 bp0.103%Feb 5, 20210.776%Dec 29, 2021
10Y0.937%1.595%+65.8 bp0.937%Jan 4, 20211.834%Mar 19, 2021
30Y1.741%1.992%+25.1 bp1.741%Jan 4, 20212.618%Mar 18, 2021

Rates are percent; the change column is basis points. A rise in yield is a fall in price, so the colours here describe the rate rather than a bondholder's return.

Month by month

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.