Direct Answer
The Cboe 1-Year Volatility Index, an estimate of expected S&P 500 volatility over roughly the next year, derived from SPX option prices using the same variance-based method as the VIX applied to longer-dated options. It shows how much volatility options traders expect over a year. It is an implied measure that includes a risk premium, so it is not an unbiased forecast of realised volatility.
VIX1Y: Formula, Meaning, Signals, Examples and How to Use It
How Is VIX1Y Calculated?
The Cboe 1-Year Volatility Index, an estimate of expected S&P 500 volatility over roughly the next year, derived from SPX option prices using the same variance-based method as the VIX applied to longer-dated options.
Formula: VIX1Y = 100 x sqrt(weighted variance implied by SPX options at the one-year horizon)
Inputs:
- SPX option prices at longer maturities
- Risk-free rates
- Cboe's published index value
Reading it. It shows how much volatility options traders expect over a year. It is more stable than the VIX, and comparing it to the VIX or VIX3M shows how the market prices long-horizon uncertainty against near-term stress.
Limits. It is an implied measure that includes a risk premium, so it is not an unbiased forecast of realised volatility. Long-dated options are thinly traded, which can add noise.
What is VIX1Y?
The Cboe 1-Year Volatility Index, an estimate of expected S&P 500 volatility over roughly the next year, derived from SPX option prices using the same variance-based method as the VIX applied to longer-dated options.
How to use VIX1Y
It shows how much volatility options traders expect over a year. It is more stable than the VIX, and comparing it to the VIX or VIX3M shows how the market prices long-horizon uncertainty against near-term stress. A reading alone is never a buy or sell signal; it needs context from price structure, volume, volatility and the broader market regime.
Strengths
- Reaching out to one-year options gives a long-horizon implied volatility on the same variance-based basis as the shorter VIX family.
- As a published index value, it can be charted directly and compared with the 30-day VIX without further computation.
- Reproducible when the formula and data convention are fixed.
Weaknesses and limitations
- The measure uses SPX options only, so it is not a volatility estimate for stocks outside the S&P 500 universe.
- A one-year horizon spans many scheduled events and an uncertain economic path, so the index averages over very different possible regimes.
- Correlated indicators can create false confidence by repeating the same underlying information.
Editorial and risk note
This page is educational content, not individualized investment advice. It should not imply guaranteed prediction, accuracy or outperformance.
Frequently Asked Questions
Is VIX1Y a buy or sell signal?
No. It shows how much volatility options traders expect over a year. It is an implied measure that includes a risk premium, so it is not an unbiased forecast of realised volatility. A trade built on it still needs a trigger, an invalidation rule, a position size and realistic execution assumptions.
What is the best setting for VIX1Y?
VIX1Y is computed from SPX option prices at longer maturities; risk-free rates; cboe's published index value, so the choices that matter are the data convention and the window it is read over. Test those across instruments, regimes and out-of-sample periods instead of fitting one historical winner.
Can VIX1Y be used by itself?
It is an implied measure that includes a risk premium, so it is not an unbiased forecast of realised volatility. Long-dated options are thinly traded, which can add noise. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.
Does VIX1Y work on every timeframe?
The calculation (VIX1Y = 100 x sqrt(weighted variance implied by SPX options at the one-year horizon)) can be run on any bar size, but behavior is not portable: a reading on a five-minute chart describes a very different market window from the same reading on a daily chart. Validate the exact timeframe before relying on it.
Why does VIX1Y give false signals?
The measure uses SPX options only, so it is not a volatility estimate for stocks outside the S&P 500 universe. A one-year horizon spans many scheduled events and an uncertain economic path, so the index averages over very different possible regimes. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.
How should VIX1Y be backtested?
Rebuild VIX1Y from SPX option prices at longer maturities using point-in-time data, write the rules before testing, include delisted securities where relevant, model realistic fills and costs, reserve a validation sample and compare with a simpler baseline.