How can I get futures & options roll return data, that is , to get futures roll yield?
Total Return ≈ Spot Price Return + Futures Roll Yield.
For example, I'd like to calculate return when I invest VIX futures from 2000/1/1 to 2019/9/30.
Unlike spot price, my equity curve should be strongly down shoulder because of its negative carry.
However, VXc1, VIX future continuation month1, seems to be future's spot price not including roll cost.