[Solved]-Ending Series points don't show up on highchart area type chart for large series data-Highcharts

This behaviour is caused by the data-gropuing feature. You can disable the feature:

"plotOptions": {
    "area": {
        ...,
        dataGrouping: {
            enabled: false
        }
    }
}

or control anchor behaviour:

"plotOptions": {
    "area": {
        ...,
        dataGrouping: {
            anchor: 'end',
            lastAnchor: 'end'
        }
    }
}

Live demo: https://stackblitz.com/edit/highcharts-angular-stock-mpcl1d

API Reference: https://api.highcharts.com/highstock/series.line.dataGrouping

Docs: https://www.highcharts.com/docs/stock/data-grouping