The Treasury curve in 2015

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

0%1%2%3%4%Jan 2, 2015Dec 31, 2015Jan 2, 20152Y zero rate0.711%10Y zero rate2.190%30Y zero rate2.855%Jan 12, 20152Y zero rate0.587%10Y zero rate1.983%30Y zero rate2.612%Jan 21, 20152Y zero rate0.562%10Y zero rate1.961%30Y zero rate2.535%Jan 29, 20152Y zero rate0.530%10Y zero rate1.866%30Y zero rate2.447%Feb 6, 20152Y zero rate0.693%10Y zero rate2.029%30Y zero rate2.650%Feb 17, 20152Y zero rate0.726%10Y zero rate2.247%30Y zero rate2.869%Feb 25, 20152Y zero rate0.645%10Y zero rate2.078%30Y zero rate2.687%Mar 5, 20152Y zero rate0.687%10Y zero rate2.203%30Y zero rate2.871%Mar 13, 20152Y zero rate0.717%10Y zero rate2.228%30Y zero rate2.811%Mar 23, 20152Y zero rate0.636%10Y zero rate2.009%30Y zero rate2.654%Mar 31, 20152Y zero rate0.592%10Y zero rate2.028%30Y zero rate2.704%Apr 8, 20152Y zero rate0.572%10Y zero rate1.994%30Y zero rate2.686%Apr 16, 20152Y zero rate0.536%10Y zero rate1.986%30Y zero rate2.731%Apr 24, 20152Y zero rate0.568%10Y zero rate2.023%30Y zero rate2.796%May 4, 20152Y zero rate0.646%10Y zero rate2.264%30Y zero rate3.081%May 12, 20152Y zero rate0.659%10Y zero rate2.380%30Y zero rate3.248%May 20, 20152Y zero rate0.652%10Y zero rate2.383%30Y zero rate3.312%May 29, 20152Y zero rate0.639%10Y zero rate2.237%30Y zero rate3.121%Jun 8, 20152Y zero rate0.726%10Y zero rate2.511%30Y zero rate3.389%Jun 16, 20152Y zero rate0.741%10Y zero rate2.430%30Y zero rate3.338%Jun 24, 20152Y zero rate0.718%10Y zero rate2.498%30Y zero rate3.467%Jul 2, 20152Y zero rate0.670%10Y zero rate2.514%30Y zero rate3.494%Jul 13, 20152Y zero rate0.714%10Y zero rate2.549%30Y zero rate3.526%Jul 21, 20152Y zero rate0.734%10Y zero rate2.429%30Y zero rate3.407%Jul 29, 20152Y zero rate0.724%10Y zero rate2.360%30Y zero rate3.275%Aug 6, 20152Y zero rate0.742%10Y zero rate2.294%30Y zero rate3.167%Aug 14, 20152Y zero rate0.781%10Y zero rate2.270%30Y zero rate3.100%Aug 24, 20152Y zero rate0.649%10Y zero rate2.104%30Y zero rate2.947%Sep 1, 20152Y zero rate0.753%10Y zero rate2.266%30Y zero rate3.160%Sep 10, 20152Y zero rate0.773%10Y zero rate2.317%30Y zero rate3.225%Sep 18, 20152Y zero rate0.716%10Y zero rate2.223%30Y zero rate3.178%Sep 28, 20152Y zero rate0.702%10Y zero rate2.171%30Y zero rate3.123%Oct 6, 20152Y zero rate0.639%10Y zero rate2.122%30Y zero rate3.145%Oct 15, 20152Y zero rate0.649%10Y zero rate2.107%30Y zero rate3.132%Oct 23, 20152Y zero rate0.687%10Y zero rate2.184%30Y zero rate3.146%Nov 2, 20152Y zero rate0.807%10Y zero rate2.285%30Y zero rate3.189%Nov 10, 20152Y zero rate0.926%10Y zero rate2.437%30Y zero rate3.353%Nov 19, 20152Y zero rate0.948%10Y zero rate2.356%30Y zero rate3.250%Nov 30, 20152Y zero rate0.988%10Y zero rate2.315%30Y zero rate3.224%Dec 8, 20152Y zero rate1.017%10Y zero rate2.333%30Y zero rate3.235%Dec 16, 20152Y zero rate1.098%10Y zero rate2.398%30Y zero rate3.258%Dec 24, 20152Y zero rate1.091%10Y zero rate2.342%30Y zero rate3.196%Dec 31, 20152Y zero rate1.102%10Y zero rate2.380%30Y zero rate3.252%
2Y zero rate10Y zero rate30Y zero rate
Zero rate first, last, low and high for each charted tenor across 2015.
TenorFirstLastChangeLowHigh
2Y0.711%1.102%+39.1 bp0.468%Jan 15, 20151.131%Dec 29, 2015
10Y2.190%2.380%+19.0 bp1.777%Jan 30, 20152.608%Jun 10, 2015
30Y2.855%3.252%+39.6 bp2.345%Feb 2, 20153.549%Jun 26, 2015

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.