score:0

Accepted answer

you can set the clip option to false:

  plotoptions: {
    series: {
      clip: false
    }
  }

api reference: https://api.highcharts.com/highcharts/plotoptions.line.clip

demo: https://jsfiddle.net/blacklabel/pgs4yjce/

another approach would be removing yaxis.max, setting endontick to false and maxpadding to the adequate value.

  yaxis: {
    endontick: false,
    maxpadding: 0.05, // sample value
    min: 0,
  }

demo: https://jsfiddle.net/blacklabel/kduycew8/


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