you might want to replace aapl with aaplMissing to show the missing data

or the example for the area mark with missing data: Plot.plot({ marks: [ Plot.line(aaplMissing, { filter: d => !isNaN(d.close), x: "date", y: "close", stroke: "#eee" }), Plot.line(aaplMissing, { x: "date", y: "close", stroke: "steelblue" }) ] })