Highcharts.stockChart('container', {

    title: {
        text: 'Data grouping on plotOptions.series. Should group to weeks'
    },

    tooltip: {
        valueDecimals: 4
    },

    rangeSelector: {
        selected: 4
    },

    plotOptions: {
        series: {
            marker: {
                enabled: true
            },
            dataGrouping: {
                groupPixelWidth: 10
            }
        }
    },

    series: [{
        name: 'ADBE',
        data: ADBE
    }]
});