VIX3M (3-month expected vol)
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Definition
The 93-day (3-month) analogue of the VIX: expected S&P 500 implied volatility over a three-month horizon, built the same way from SPX options but at a longer tenor.
How to read it
VIX3M captures the market's longer-horizon volatility expectation. On its own it moves like the VIX but is smoother and less reactive to same-day shocks. Its primary use is relational: comparing VIX3M to the 30-day VIX reveals the slope of the volatility term structure. In calm markets VIX3M sits above VIX (contango) because uncertainty compounds with time; during acute stress the front (VIX) can spike above VIX3M (backwardation), signaling that near-term fear exceeds longer-term fear.
How practitioners use it
Used as context among multiple indicators — never as a standalone signal to act.
Less common professional uses
When VIX rises above VIX3M (ratio < 1), the curve has inverted — historically associated with stressed markets and, at extremes, mean-reversion setups. Roll-yield intuition: persistent contango (VIX3M > VIX) is the structural headwind that erodes long-volatility ETPs over time — relevant when interpreting VXX-type products. A VIX3M that stays elevated while spot VIX falls back suggests the market expects lingering risk beyond the immediate scare — a subtler warning than the VIX alone.
Sources & provenance
CBOE VIX3M methodology (educational overview); Portal desk education notes
This page is educational content published by Pachira Aquatica Global LLC. It is not investment advice and not a recommendation.