@series = []
    # Amount of points of data to get and generate in the chart
    data_amount = 30
    # The final data to get the data from (Using 2 months before the current month because the nasdaq api only has data from this period)
    end_date = Date.today.end_of_month - 2.month
    # Iterating on each chart type
    chart_types.each do |chart_type|
      @series << { name: chart_type.to_s, data: Currency.data_by_type(chart_type, end_date, data_amount) }
    end