Risk & VolatilityUpdated daily after close
VIX Fear Index: The S&P 500's Volatility Gauge, Live
The VIX — the 30-day implied volatility the options market is pricing into the S&P 500, Wall Street's “fear gauge” — charted against SPY with regime fear zones, a 16-year percentile, and the implied-vs-realized spread that shows whether options are pricing more fear than the market is delivering.
Today's reading
On June 16, 2026, the VIX closed at 16.4 — in the Normal zone and the 47th percentile of the last 16 years (up from 16.0 the prior session). The S&P 500's trailing one-month realized volatility was 15.5%, leaving an implied-vs-realized spread of 0.9 points — options are pricing in more fear than the market is delivering.
Source
Cboe VIX & S&P 500 (SPY) daily closes
Methodology
VIX level, fear zones & percentile + 21-day realized volatility spread
Updates
Daily after market closeLast: 2026-06-16
VIX · fear index2026-06-16 · close
16.41
Normal▲ from 16.04
47th percentile of the last 16 years — implies a one-month move of about 4.7% in the S&P 500.
Realized vol (1M)
15.5%
Implied − realized
+0.9
16-yr percentile
47th
Range:
01
VIX vs the S&P 500
The fear gauge against the market. The VIX spikes when stocks fall and bleeds lower as they grind higher — the clearest picture of how fear and price move in opposition.
VIX (left) S&P 500 (right)
02
Implied vs realized volatility
The VIX (implied, forward-looking) against the S&P 500's trailing 21-day realized volatility (what it actually did). The gap is the volatility risk premium: VIX above realized means options are pricing more fear than the market is delivering — the normal state. When realized overtakes the VIX, real movement is outrunning what was priced.
VIX (implied volatility) Realized volatility (21d)
03
Fear zones & historical range
The VIX over its regime bands — Calm, Normal, Elevated, High, and Panic. Today's close sits in the Normal zone, the 47th percentile of the last 16 years.
Calm 0–15Normal 15–20Elevated 20–30High 30–40Panic >40
How VIX Fear Index Works
- 1Track the VIX against the S&P 500The Cboe Volatility Index (VIX) measures the 30-day implied volatility the options market is pricing into the S&P 500. We chart it daily against SPY so the inverse relationship is plain: the VIX spikes when stocks fall and bleeds lower as they grind up. The level itself is an annualized expected move — a VIX of 16 implies the market expects the S&P to move about 16% over the next year, or roughly 4.6% over the next month.
- 2Place today’s reading in fear zonesA raw VIX number means little without context. We bucket it into regimes — Calm (under 15), Normal (15–20), Elevated (20–30), High (30–40), and Panic (over 40) — and compute where today sits as a percentile of the last 16 years, so you can see at a glance whether fear is historically cheap or stretched.
- 3Compare implied fear with realized movementWe compute the S&P 500’s trailing 21-day realized volatility — how much it has actually moved — and chart it against the VIX. The gap between them is the volatility risk premium: when the VIX sits well above realized vol, options are pricing in more fear than the market is delivering (the normal state); when realized overtakes the VIX, real movement is outrunning what was priced.
- 4Publish a dated, plain-English readingEvery update is stamped to its session — the VIX level, its zone, its percentile, the one-day change, and the implied-vs-realized spread. Volatility extremes are context for risk, not standalone timing signals.
Who Uses VIX Fear Index
Risk managers
Use the fear zone and percentile to size exposure — elevated and high regimes historically coincide with larger daily swings and wider drawdowns.
Contrarian traders
Watch panic readings (VIX over 40): spikes into the top of the historical range have marked capitulation more often than the start of a longer decline.
Options traders
Read the implied-vs-realized spread: a wide premium means selling volatility is being well paid; a negative spread means realized movement is outrunning what options priced.
Pro Tips
01
The VIX is a level, the spread is the signal
A VIX of 18 is meaningless alone. If realized vol is 10, options carry a fat 8-point fear premium; if realized is 22, the market is moving more than options priced. The gap tells you more than the level.
02
Spikes mean-revert, calm persists
Volatility is mean-reverting from the top: panic readings rarely last, which is why VIX spikes fade fast. Low readings, by contrast, can persist for months — a calm VIX is not a countdown timer.
03
Pair the level with the curve
The VIX tells you how much fear is priced; the VIX term structure tells you whether that fear is front-loaded (backwardation, acute stress) or distant (contango, the normal state). Read them together.
Common Issues & Solutions
A low VIX means it’s safe to be aggressive, right?▾
Not necessarily. A calm VIX reflects what the options market expects, not what will happen — the lowest readings often precede shocks precisely because complacency is widespread. Treat low vol as a condition, not an all-clear.
Why does the VIX jump when the S&P only drops a little?▾
The VIX prices the demand for protection, not just realized movement. A modest decline accompanied by heavy put buying can spike implied volatility well beyond what the index move alone would suggest.
The VIX and realized volatility don’t line up▾
They shouldn’t — that gap is the point. The VIX is forward-looking implied volatility; realized volatility is backward-looking actual movement. The spread between them (the volatility risk premium) is one of the most-studied edges in markets.
Frequently Asked Questions
What is the VIX (the fear index)?▾
The VIX is the Cboe Volatility Index — a real-time measure of the 30-day implied volatility the options market is pricing into the S&P 500, derived from a wide strip of SPX option prices. Because demand for protection rises when investors are nervous, it spikes during selloffs and falls in calm markets, which earned it the nickname "the fear gauge" or "fear index."
What is a normal VIX level?▾
Historically the VIX spends most of its time between roughly 12 and 20; its long-run median is around 17. We treat under 15 as Calm, 15–20 as Normal, 20–30 as Elevated, 30–40 as High, and over 40 as Panic. The all-time closing record is 82.7, set in March 2020 during the COVID crash.
What does the VIX level actually mean?▾
The VIX is an annualized percentage. A VIX of 16 means the options market expects the S&P 500 to move about 16% (up or down) over the next year, with about 68% probability — which works out to roughly 4.6% over the next 30 days. Divide the VIX by about 3.46 (the square root of 12) to get the implied one-month move.
What is implied vs realized volatility?▾
Implied volatility (the VIX) is forward-looking — what options prices say the market expects. Realized volatility is backward-looking — how much the S&P 500 actually moved, which we compute over a trailing 21 trading days. The gap between them is the volatility risk premium: the VIX normally trades above realized vol because investors pay up for insurance, and that premium is what option sellers harvest.
Is a high VIX bullish or bearish?▾
It depends on the regime, but historically extreme VIX spikes have been more bullish than bearish for forward returns — panic readings tend to mark capitulation lows rather than the start of fresh declines, because volatility mean-reverts from the top. A persistently low VIX is the more ambiguous signal: it reflects calm, but the deepest complacency has sometimes preceded shocks.
How often is this updated?▾
Daily. The VIX and SPY close are refreshed after every US market close, and the realized-volatility, percentile, and fear-zone calculations update with them. Each reading is dated to the session it reflects, with 16 years of history browsable on the charts.
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Last updated: 2026-06-16