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Simulating ZIV

ZIV is a daily inverse of VXZ, or SPVXSTER.

I couldn't find historical data on SPVXSTER and have to use VXZ, which started trading 2/20/2009.

ZIV started trading 11/30/2010. I normalized that day's price to the simulated ZIV value for overlaying.

In the chart, VXZ (blue) and ZIV-norm (green) are actual prices. The ZIV actual price underperforms the simulation.