<div id="chart">
        <div class="toolbar">
          <button id="one_month"
              @click="updateData('one_month')" :class="{active: selection==='one_month'}"
              >
            1M
          </button>
          
          <button id="six_months"
              @click="updateData('six_months')" :class="{active: selection==='six_months'}"
              >
            6M
          </button>
          
          <button id="one_year"
              
              @click="updateData('one_year')" :class="{active: selection==='one_year'}"
              >
            1Y
          </button>
          
          <button id="ytd"
              @click="updateData('ytd')" :class="{active: selection==='ytd'}"
              >
            YTD
          </button>
          
          <button id="all"
              @click="updateData('all')" :class="{active: selection==='all'}"
              >
            ALL
          </button>
        </div>
      
        <div id="chart-timeline">
        <apexchart type="area" height="350" ref="chart" :options="chartOptions" :series="series"></apexchart>
      </div>
      </div>