Optimal Hedge Ratio Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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Before relying on the figure from Optimal Hedge Ratio Calculator, it helps to understand the mechanics behind it. This calculator keeps the relevant inputs and equation close enough to reproduce the result independently.

What this calculator does

Optimal Hedge Ratio Calculator estimates the minimum-variance hedge ratio from the correlation between spot and futures changes and their relative volatilities. It works from spot–futures correlation, spot price volatility, and futures price volatility. For Optimal Hedge Ratio Calculator, the output therefore reflects the entered scenario rather than a hidden market-data feed or a preselected analyst assumption.

How to use it

Provide Spot–futures correlation, Spot price volatility, and Futures price volatility before calculating the result. Before calculating, recheck Spot–futures correlation, Spot price volatility, Futures price volatility against the source numbers you intend to analyze.

How the calculation works

Optimal hedge ratio h* = correlation × spot-price volatility ÷ futures-price volatility. Optimal Hedge Ratio Calculator evaluates the stated relationship from the form values that the calculation actually uses. For Optimal Hedge Ratio Calculator, the equation reflects the form entries directly, making input review the first step when a result does not look plausible.

Example

With a spot–futures correlation of 0.85, spot volatility of 12%, and futures volatility of 10%, the optimal hedge ratio is 1.02. This worked Optimal Hedge Ratio Calculator case demonstrates the calculation and is not a forecast of a future result.

How to interpret the result

A ratio near 1 suggests roughly one unit of futures exposure for each unit of spot exposure under the model. Values above or below 1 reflect the entered correlation and relative volatility rather than a universal hedge size. Read the Optimal Hedge Ratio Calculator output as the specific relationship calculated from the form, not as a complete investment or credit decision by itself.

Limitations and notes

The formula is a static minimum-variance estimate. Correlations and volatilities can change, basis risk can remain, and the calculator does not convert the ratio into contract counts, notional exposure, transaction costs, margin requirements, or liquidity risk. If you revisit Optimal Hedge Ratio Calculator later, refresh the displayed inputs instead of carrying an old result forward.