VIXnD

VIXnD represents the market-implied forward volatility over a specific horizon, derived directly from listed option prices. It extends the Chicago Board Options Exchange (CBOE) model-free implied volatility framework by anchoring volatility to an explicit number of days rather than a fixed calendar convention.

Conceptually, VIXnD answers a focused question: what level of volatility is the options market currently pricing for the next n days, conditional on today’s information?

Unlike spot VIX, which is tied to a standard 30-day maturity and limited to the S&P 500, VIXnD allows implied volatility to be measured at arbitrary horizons aligned with specific option expiries. The same methodology can be applied to individual equities where liquid options exist, producing a horizon-specific view of volatility pricing.

The Reflex Research VIXnD dataset follows the same model-free variance extraction principles used by the CBOE. By integrating option prices across strikes, it produces a forward-looking implied volatility measure that is independent of realised or historical volatility.

Horizon-specific implied volatility is particularly important for trading and risk management, as most positions are exposed over well-defined holding periods. A one-week position and a three-month position face fundamentally different risk profiles, even if spot volatility is unchanged.

In practice, VIXnD is best interpreted as a pricing reference rather than a signal. It is commonly used to compare volatility across horizons, monitor changes in volatility term structure, and calibrate option strategies to the volatility the market is actually pricing over the intended time frame.

As with other implied volatility measures, VIXnD embeds risk premia, supply-and-demand effects, and hedging pressure. Its value lies in describing the current state of volatility pricing, not in forecasting realised outcomes.