What is the MOVE Index?

By EC Assets Research Team · Published 15 May 2026 · Updated 20 May 2026

MOVE Index — Yield-curve-weighted index of one-month implied volatility on US Treasury options, the rates-market analogue of the VIX.

What the MOVE Index Actually Measures

The MOVE Index is a benchmark of forward-looking interest rate volatility derived from one-month at-the-money options on US Treasury securities. It aggregates implied volatilities across the 2-year, 5-year, 10-year, and 30-year tenors into a single basis-point figure, functioning as the fixed-income analogue of the CBOE VIX equity volatility index.

The acronym stands for Merrill Option Volatility Estimate. Where the VIX expresses equity market uncertainty as an annualized percentage of price, the MOVE expresses Treasury market uncertainty as basis points of yield. The distinction matters because rates practitioners hedge, report, and budget risk in basis-point space rather than in percentage-of-price space; an index built on the same logic therefore plugs directly into existing fixed-income risk frameworks.

The benchmark was developed by Harley Bassman during his tenure at Merrill Lynch in 1988. Following the absorption of Merrill Lynch into Bank of America and subsequent transitions in benchmark administration, the index is calculated and disseminated by ICE Data Indices under the formal designation ICE BofAML MOVE Index, ticker MOVE.

How It Works

The composite is a weighted average of the normalized implied volatilities of four constituent one-month at-the-money options on US Treasury benchmarks. The weights are fixed and concentrate the largest single share on the 10-year point, reflecting that tenor's role as the global anchor of duration risk and the deepest pool of option liquidity on the curve.

FIG. 01 · TABLE · MOVE Index Tenor Weights

Source: ICE Data Indices methodology.

The aggregation can be written compactly as:

$$\text{MOVE} = 0.20 \cdot \sigma_{2Y} + 0.20 \cdot \sigma_{5Y} + 0.40 \cdot \sigma_{10Y} + 0.20 \cdot \sigma_{30Y}$$

where $\sigma_{nY}$ denotes the normalized implied yield volatility, expressed in basis points per annum, of the one-month at-the-money option on the n-year Treasury benchmark.

Source: Stylized representation based on long-run historical observation.

Periods of stable monetary policy and ample dealer intermediation typically anchor the index in the calm to average range. Acute episodes, including the 2008 global financial crisis, the March 2020 Treasury market dislocation, and aggressive rate-hike phases, have driven readings above 150 and at times beyond 200 basis points.

When It Applies (and Limitations)

The benchmark is most informative when the question concerns short-dated, curve-wide rate uncertainty as priced by the options market. Typical applications include calibrating duration hedges, sizing macro overlays, stress-testing fixed-income carry strategies, and monitoring proxies for funding-market stress. The index also serves as a conditioning variable in cross-asset volatility models, where rates volatility frequently leads equity and credit volatility at major turning points.

Horizon Limitation

The index captures only one-month implied volatility. It is silent on the term structure of rate volatility beyond a thirty-day horizon. For longer-dated views, practitioners reference swaption volatility matrices that span option maturities from three months to multiple years and underlying tenors from one month to ten years.

Asset-Class Specificity

The benchmark is concentrated on US dollar Treasuries. It does not reflect volatility in non-dollar rate markets, in credit spreads, or in inflation-linked instruments. Analogous benchmarks exist for some of these markets, but the MOVE itself is dollar-rates specific.

Risk-Neutral Bias

As a risk-neutral measure, the index incorporates a volatility risk premium. The expected realized volatility under the physical measure is, on average, lower than the implied volatility embedded in option prices. The wedge between the index and subsequently realized volatility, sometimes termed the rates variance risk premium, is itself a tradable concept and a documented return source for systematic volatility-selling strategies.

Concentration in the Belly

The fixed 40 percent weight on the 10-year means that idiosyncratic moves in that tenor can dominate the composite reading even when other parts of the curve are relatively quiet. Analysts seeking a granular view supplement the headline number with constituent-level readings or with tenor-specific swaption volatilities.

Why It Matters for Institutional Investors

For institutional allocators and risk managers, the index functions as a concise summary statistic for one of the largest and most systemically important option markets in the world. Several practical use cases recur across mandate types.

Risk Budgeting and Duration Hedging

The benchmark provides a forward-looking input for sizing duration exposure. A portfolio with a defined yield-volatility budget can translate that budget into a permissible duration. If the budget is 200 basis points of monthly return volatility from rates and the implied monthly yield volatility is 30 basis points, the implied duration cap is approximately $200 / 30 \approx 6.7$ years.

Cross-Asset Signal Construction

Empirically, the index co-moves with measures of dealer intermediation capacity and Treasury market liquidity. Sustained elevation often coincides with widening bid-ask spreads, weaker Treasury auction performance, and reduced sponsorship of risk assets. Multi-asset investors monitor the level alongside credit spreads, the VIX, and the trade-weighted dollar to construct composite stress indicators.

Strategy Benchmarking

Systematic strategies that harvest the rates variance risk premium, including short-volatility swaption overlays and delta-hedged straddle programs, are typically benchmarked relative to index levels and to the spread between the benchmark and subsequently realized volatility. The same level also serves as a conditioning variable for tactical allocation rules that scale duration exposure inversely with prevailing volatility.

Macroprudential and Policy Context

Central banks and macroprudential authorities track the index as one input among many when assessing the health of the world's largest sovereign debt market. Sustained elevation, particularly when accompanied by dispersion across the curve, has historically prompted policy responses ranging from Treasury buyback operations to changes in primary dealer balance-sheet treatment.

Liquidity and Collateral Implications

Because US Treasuries function as the dominant high-quality collateral in global funding markets, volatility in Treasury prices feeds directly into haircuts, margin requirements, and repo financing terms. A persistent rise in the benchmark often acts as a leading indicator of tightening financial conditions, propagating through credit, equities, and emerging-market assets via collateral and funding channels.

References

1. Sinclair, E. (2013). Volatility Trading (2nd ed.). Wiley.
2. Natenberg, S. (2015). Option Volatility and Pricing (2nd ed.). McGraw-Hill.
3. Cboe. VIX White Paper: The Cboe Volatility Index. (https://www.cboe.com/vix)