This index tracks the inverse daily returns generated by a basket of VIX futures, comprising those set to expire in the nearest two months. To ensure a steady time to expiration for these underlying contracts, this hypothetical portfolio undergoes a daily rebalancing process. Its valuation is finalized each day at 4:00 p.m. Eastern Time, with the closing price derived from the average futures prices observed during the final fifteen minutes of trading, between 3:45 p.m. and 4:00 p.m. Eastern Time.