How to Read the VIX (Volatility Index)

Nicknamed "the fear index," the VIX (CBOE Volatility Index) measures the implied volatility the options market expects for the S&P 500 over the next 30 days. It isn't a measure of past volatility, but a forward-looking expectation extracted directly from options prices.

Key Levels to Know

• Below 15 — complacency, calm market, risk of underestimating actual risk.
• Between 15 and 20 — normal regime, volatility within historical average.
• Between 20 and 30 — moderate stress, heightened nervousness tied to identifiable uncertainty.
• Above 30 — high to extreme stress, panic phases or sharp corrections.

Term Structure: Contango and Backwardation

Beyond the spot VIX, traders watch its term structure — the comparison between short-term VIX and VIX3M (3-month volatility). In contango (normal state), short-term VIX sits below VIX3M. In backwardation (stress state), short-term VIX exceeds it — a typical signal during acute panic phases.

The VIX as a Contrarian Indicator

Historically, extreme VIX spikes have often coincided with significant market bottoms. This isn't a reliable timing signal on its own, though: an elevated VIX can persist for several weeks before a genuine bottom takes shape.