The Yield Curve, 1990-2018

After the opening animation, use the date slider to explore the yield curve historically. Notable inversions can be observed prior to the 2000 and 2007 recessions. Reload the page to watch the animation again.

Data from U.S. Treasury. Yields from the first reported day of each month, Jan. 1990 to Nov. 2018, for three-month, six-month, one-year, two-year, three-year, five-year, seven-year and ten-year bonds.

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var data = [
  {
     "date":"1990-01-02"
    ,"R_3M":7.83
    ,"R_6M":7.89
    ,"R_1Y":7.81
    ,"R_2Y":7.87
    ,"R_3Y":7.90
    ,"R_5Y":7.87
    ,"R_7Y":7.98
    ,"R_10Y":7.94
  },
  {
     "date":"1990-02-01"
    ,"R_3M":8.02
    ,"R_6M":8.13
    ,"R_1Y":8.09
    ,"R_2Y":8.28
    ,"R_3Y":8.35
    ,"R_5Y":8.35
    ,"R_7Y":8.38
    ,"R_10Y":8.42
  },
  {
     "date":"1990-03-01"
    ,"R_3M":8.08
    ,"R_6M":8.19
    ,"R_1Y":8.21
    ,"R_2Y":8.53
    ,"R_3Y":8.53
    ,"R_5Y":8.53
    ,"R_7Y":8.62
    ,"R_10Y":8.59
  },
  {
     "date":"1990-04-02"
    ,"R_3M":8.05
    ,"R_6M":8.23
    ,"R_1Y":8.34
    ,"R_2Y":8.62
    ,"R_3Y":8.67
    ,"R_5Y":8.65
    ,"R_7Y":8.69
    ,"R_10Y":8.65
  },
  {
     "date":"1990-05-01"
    ,"R_3M":8.19
    ,"R_6M":8.49
    ,"R_1Y":8.56
    ,"R_2Y":9.02
    ,"R_3Y":9.09
    ,"R_5Y":9.08
    ,"R_7Y":9.09
    ,"R_10Y":9.08
  },
  {
     "date":"1990-06-01"
    ,"R_3M":7.94
    ,"R_6M":8.01
    ,"R_1Y":8.06
    ,"R_2Y":8.33
    ,"R_3Y":8.36
    ,"R_5Y":8.38
    ,"R_7Y":8.47
    ,"R_10Y":8.44
  },
  {
     "date":"1990-07-02"
    ,"R_3M":8.00
    ,"R_6M":8.03
    ,"R_1Y":8.06
    ,"R_2Y":8.25
    ,"R_3Y":8.32
    ,"R_5Y":8.35
    ,"R_7Y":8.46
    ,"R_10Y":8.43
  },
  {
     "date":"1990-08-01"
    ,"R_3M":7.67
    ,"R_6M":7.65
    ,"R_1Y":7.63
    ,"R_2Y":7.85
    ,"R_3Y":7.96
    ,"R_5Y":8.06
    ,"R_7Y":8.20
    ,"R_10Y":8.29
  },
  {
     "date":"1990-09-04"
    ,"R_3M":7.64
    ,"R_6M":7.75
    ,"R_1Y":7.76
    ,"R_2Y":8.09
    ,"R_3Y":8.28
    ,"R_5Y":8.53
    ,"R_7Y":8.80
    ,"R_10Y":8.90
  },
  {
     "date":"1990-10-01"
    ,"R_3M":7.37
    ,"R_6M":7.53
    ,"R_1Y":7.63
    ,"R_2Y":7.94
    ,"R_3Y":8.12
    ,"R_5Y":8.38
    ,"R_7Y":8.63
    ,"R_10Y":8.71
  },
  {
     "date":"1990-11-01"
    ,"R_3M":7.28
    ,"R_6M":7.38
    ,"R_1Y":7.32
    ,"R_2Y":7.68
    ,"R_3Y":7.88
    ,"R_5Y":8.15
    ,"R_7Y":8.42
    ,"R_10Y":8.57
  },
  {
     "date":"1990-12-03"
    ,"R_3M":7.28
    ,"R_6M":7.37
    ,"R_1Y":7.31
    ,"R_2Y":7.51
    ,"R_3Y":7.65
    ,"R_5Y":7.88
    ,"R_7Y":8.14
    ,"R_10Y":8.22
  },
  {
     "date":"1991-01-02"
    ,"R_3M":6.66
    ,"R_6M":6.73
    ,"R_1Y":6.74
    ,"R_2Y":7.08
    ,"R_3Y":7.30
    ,"R_5Y":7.59
    ,"R_7Y":7.90
    ,"R_10Y":7.97
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  {
     "date":"1991-02-01"
    ,"R_3M":6.17
    ,"R_6M":6.24
    ,"R_1Y":6.27
    ,"R_2Y":6.83
    ,"R_3Y":7.10
    ,"R_5Y":7.45
    ,"R_7Y":7.75
    ,"R_10Y":7.91
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     "date":"1991-03-01"
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    ,"R_6M":6.38
    ,"R_1Y":6.52
    ,"R_2Y":7.18
    ,"R_3Y":7.41
    ,"R_5Y":7.78
    ,"R_7Y":8.00
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     "date":"1991-04-01"
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     "date":"1991-05-01"
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    ,"R_5Y":7.63
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    ,"R_3Y":7.21
    ,"R_5Y":7.80
    ,"R_7Y":8.01
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     "date":"1991-07-01"
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    ,"R_7Y":8.17
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    ,"R_7Y":8.05
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    ,"R_3Y":6.67
    ,"R_5Y":7.32
    ,"R_7Y":7.66
    ,"R_10Y":7.81
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     "date":"1991-10-01"
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    ,"R_6M":5.35
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     "date":"1991-11-01"
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    ,"R_6M":4.98
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    ,"R_3Y":6.02
    ,"R_5Y":6.71
    ,"R_7Y":7.16
    ,"R_10Y":7.48
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     "date":"1991-12-02"
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    ,"R_6M":4.56
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    ,"R_5Y":6.43
    ,"R_7Y":6.91
    ,"R_10Y":7.32
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  {
     "date":"1992-01-02"
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    ,"R_6M":4.01
    ,"R_1Y":4.13
    ,"R_2Y":4.77
    ,"R_3Y":5.13
    ,"R_5Y":5.98
    ,"R_7Y":6.46
    ,"R_10Y":6.78
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     "date":"1992-02-03"
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    ,"R_6M":4.06
    ,"R_1Y":4.23
    ,"R_2Y":5.15
    ,"R_3Y":5.72
    ,"R_5Y":6.52
    ,"R_7Y":6.98
    ,"R_10Y":7.36
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     "date":"1992-03-02"
    ,"R_3M":4.14
    ,"R_6M":4.28
    ,"R_1Y":4.50
    ,"R_2Y":5.45
    ,"R_3Y":5.94
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    ,"R_7Y":7.07
    ,"R_10Y":7.38
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     "date":"1992-04-01"
    ,"R_3M":4.11
    ,"R_6M":4.26
    ,"R_1Y":4.48
    ,"R_2Y":5.53
    ,"R_3Y":6.07
    ,"R_5Y":6.82
    ,"R_7Y":7.17
    ,"R_10Y":7.46
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     "date":"1992-05-01"
    ,"R_3M":3.72
    ,"R_6M":3.89
    ,"R_1Y":4.28
    ,"R_2Y":5.33
    ,"R_3Y":5.97
    ,"R_5Y":6.82
    ,"R_7Y":7.20
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     "date":"1992-06-01"
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     "date":"1992-07-01"
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    ,"R_6M":3.75
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     "date":"1992-08-03"
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    ,"R_6M":3.38
    ,"R_1Y":3.61
    ,"R_2Y":4.40
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    ,"R_7Y":6.28
    ,"R_10Y":6.72
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  {
     "date":"1992-09-01"
    ,"R_3M":3.22
    ,"R_6M":3.32
    ,"R_1Y":3.45
    ,"R_2Y":4.12
    ,"R_3Y":4.64
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     "date":"1992-10-01"
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    ,"R_2Y":3.67
    ,"R_3Y":4.18
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    ,"R_7Y":5.80
    ,"R_10Y":6.23
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     "date":"1992-11-02"
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    ,"R_6M":3.59
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    ,"R_2Y":4.81
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    ,"R_5Y":6.24
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     "date":"1993-01-04"
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    ,"R_6M":3.37
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    ,"R_3Y":5.03
    ,"R_5Y":5.90
    ,"R_7Y":6.33
    ,"R_10Y":6.60
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     "date":"1993-02-01"
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    ,"R_6M":3.17
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    ,"R_2Y":4.19
    ,"R_3Y":4.69
    ,"R_5Y":5.55
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     "date":"1993-03-01"
    ,"R_3M":3.03
    ,"R_6M":3.14
    ,"R_1Y":3.30
    ,"R_2Y":3.88
    ,"R_3Y":4.31
    ,"R_5Y":5.12
    ,"R_7Y":5.58
    ,"R_10Y":5.94
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    ,"R_6M":3.09
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    ,"R_2Y":3.94
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    ,"R_7Y":5.74
    ,"R_10Y":6.06
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    ,"R_6M":3.06
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    ,"R_2Y":3.75
    ,"R_3Y":4.23
    ,"R_5Y":5.06
    ,"R_7Y":5.54
    ,"R_10Y":5.96
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     "date":"1993-06-01"
    ,"R_3M":3.14
    ,"R_6M":3.30
    ,"R_1Y":3.55
    ,"R_2Y":4.16
    ,"R_3Y":4.54
    ,"R_5Y":5.28
    ,"R_7Y":5.71
    ,"R_10Y":6.07
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     "date":"1993-07-01"
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    ,"R_6M":3.19
    ,"R_1Y":3.41
    ,"R_2Y":3.99
    ,"R_3Y":4.37
    ,"R_5Y":5.04
    ,"R_7Y":5.46
    ,"R_10Y":5.80
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     "date":"1993-08-02"
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    ,"R_6M":3.35
    ,"R_1Y":3.58
    ,"R_2Y":4.19
    ,"R_3Y":4.55
    ,"R_5Y":5.20
    ,"R_7Y":5.55
    ,"R_10Y":5.85
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    ,"R_6M":3.19
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    ,"R_2Y":3.88
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    ,"R_5Y":4.81
    ,"R_7Y":5.12
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     "date":"1993-10-01"
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    ,"R_5Y":4.72
    ,"R_7Y":5.03
    ,"R_10Y":5.34
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    ,"R_6M":3.36
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    ,"R_7Y":5.32
    ,"R_10Y":5.56
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    ,"R_6M":3.37
    ,"R_1Y":3.62
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    ,"R_3Y":4.54
    ,"R_5Y":5.14
    ,"R_7Y":5.52
    ,"R_10Y":5.82
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    ,"R_7Y":5.66
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     "date":"2018-06-01"
    ,"R_3M":1.92
    ,"R_6M":2.10
    ,"R_1Y":2.28
    ,"R_2Y":2.47
    ,"R_3Y":2.61
    ,"R_5Y":2.74
    ,"R_7Y":2.85
    ,"R_10Y":2.89
  },
  {
     "date":"2018-07-02"
    ,"R_3M":1.98
    ,"R_6M":2.14
    ,"R_1Y":2.34
    ,"R_2Y":2.57
    ,"R_3Y":2.65
    ,"R_5Y":2.75
    ,"R_7Y":2.83
    ,"R_10Y":2.87
  },
  {
     "date":"2018-08-01"
    ,"R_3M":2.03
    ,"R_6M":2.22
    ,"R_1Y":2.45
    ,"R_2Y":2.67
    ,"R_3Y":2.78
    ,"R_5Y":2.87
    ,"R_7Y":2.96
    ,"R_10Y":3.00
  },
  {
     "date":"2018-09-04"
    ,"R_3M":2.13
    ,"R_6M":2.29
    ,"R_1Y":2.49
    ,"R_2Y":2.66
    ,"R_3Y":2.73
    ,"R_5Y":2.78
    ,"R_7Y":2.85
    ,"R_10Y":2.90
  },
  {
     "date":"2018-10-01"
    ,"R_3M":2.23
    ,"R_6M":2.40
    ,"R_1Y":2.60
    ,"R_2Y":2.82
    ,"R_3Y":2.90
    ,"R_5Y":2.96
    ,"R_7Y":3.04
    ,"R_10Y":3.09
  },
  {
     "date":"2018-11-01"
    ,"R_3M":2.32
    ,"R_6M":2.49
    ,"R_1Y":2.67
    ,"R_2Y":2.84
    ,"R_3Y":2.91
    ,"R_5Y":2.96
    ,"R_7Y":3.06
    ,"R_10Y":3.14
  }]

var margin = {top: 10, right: 50, bottom: 50, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.bottom - margin.top;
    
// Creates the SVG container
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")")
    .attr("width", width )
    .attr("height", height)

// Creates the plot area for the yield curve
var plot = svg.append("g")
    .attr("width", width )
    .attr("height", height - 20);
    
var yieldCurve = plot.append("path")
    .attr("class", "yieldcurve");

var curveX = d3.scale.linear()
                .domain([0,10])
                .range([0,width]);
var curveY = d3.scale.linear()
                .domain([0,10])
                .range([height - 50 , 0])

var curveXaxis = plot.append("g")
    .attr("class", "plot x axis")
    .attr("transform", "translate(0," + (+height - 50) + ")")
    .call(d3.svg.axis()
      .scale(curveX)
      .orient("bottom"))
      
var curveYaxis = plot.append("g")
    .attr("class", "plot y axis")
    //.attr("transform", "translate(0," + height + ")")
    .call(d3.svg.axis()
      .scale(curveY)
      .orient("left"))

// Add the text label for the x axis
    svg.append("text")
        .attr("transform", "translate(" + (width / 2) + " ," + (height + margin.bottom - 65) + ")")
        .style("text-anchor", "middle")
        .text("Bond Maturity (in years)");

// Labels the Y axis
    svg.append("text")
        .attr("transform", "rotate(-90)")
        .attr("y", 0 - margin.left)
        .attr("x",0 - (height / 2))
        .attr("dy", "1em")
        .style("text-anchor", "middle")
        .text("Percent Yield");

var line = d3.svg.line()
    .x(function(d) { return curveX(d.maturity); })
    .y(function(d) { return curveY(d.yield); });

// Creates the date slider
var x = d3.time.scale()
    .domain(d3.extent(data,function(d){return new Date(d.date)}))
    .range([0, width])
    .clamp(true);
    
var brush = d3.svg.brush()
    .x(x)
    .extent([x.domain()[0],x.domain()[0]])
    .on("brush", brushed)
    .on("brushend",brushended)

svg.append("g")
    .attr("class", "x axis")
    .attr("transform", "translate(0," + height + ")")
    .call(d3.svg.axis()
      .scale(x)
      .orient("bottom")
      .ticks(d3.time.years)
      .tickFormat(d3.time.format("%Y")))
  .select(".domain")
  .select(function() { return this.parentNode.appendChild(this.cloneNode(true)); })
    .attr("class", "halo")

var slider = svg.append("g")
    .attr("class", "slider")
    .call(brush)

slider.selectAll(".extent,.resize")
    .remove();

slider.select(".background")
    .attr("height", height);

var handle = slider.append("circle")
    .attr("class", "handle")
    .attr("transform", "translate(0," + height + ")")
    .attr("r", 9);

// Creates the animation upon loading
slider
  .call(brush.event)
  .transition()
    .duration(10000)
    .call(brush.extent([x.domain()[1],x.domain()[1]]))
    .call(brush.event);

function brushed() {
  var value;
  
  if(typeof brush.extent() !== "undefined"){
    value = brush.extent()[0];
  
    if (d3.event.sourceEvent) { //
      value = d3.time.day.offset(d3.time.month.round(x.invert(d3.mouse(this)[0])),-1);
      brush.extent([value, value]);
    }
  } else value = x.domain()[0];
    
  updateGraph( value );
  handle.attr("cx", x(value));

}

function brushended(){
  console.log("ended")
}
    
function updateGraph( value ){
  var curvedata = data.filter(function(d){return d3.time.format("%Y-%m")(new Date(d.date))== d3.time.format("%Y-%m")(value)})[0];
  
  var curvearray = [];
  
  Object.keys(curvedata).map(function(key){
    if(key !== "date"){
      curvearray.push({
        maturity : +key.replace(/(R_)([0-9]*)([M,Y])/,"$2") / +{M:12,Y:1}[key.replace(/(R_)([0-9])*([M,Y])/,"$3")] ,
        yield : curvedata[key]
      })
    }
  })
  
  yieldCurve.datum(curvearray)
    .attr("d", line)
}

</script>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js