Hedge Ratio Calculator

The hedge ratio measures the relative size of a hedge compared to the total underlying exposure you wish to protect. The mathematical equation is expressed simply as: Hedge Ratio = Hedge / Exposure. In this formula, 'Exposure' represents the monetary value of the asset, portfolio, or liability subject to market risk, while 'Hedge' represents the monetary value or notional amount of the derivative or offsetting position used to mitigate that risk. A result of 1.0 indicates a fully hedged position, whereas values below or above 1.0 denote under-hedging or over-hedging respectively.

Imagine you manage a commodities trading portfolio with a total crude oil exposure valued at $500,000. To protect against potential downward price trends, you purchase short futures contracts totaling $400,000 in notional value. To find your hedge ratio, you divide the hedge value by the exposure value: $400,000 / $500,000. The resulting hedge ratio is 0.8, meaning 80% of your total market exposure is actively protected against volatility, leaving a minor portion unhedged.

First, regularly rebalance your hedge ratio as asset prices fluctuate, because changes in market value will automatically shift your protection percentage. Second, account for basis risk, which occurs when the hedging instrument does not move in perfect correlation with your underlying asset. Finally, avoid over-hedging unless you deliberately intend to take a speculative, directional bet against your primary holdings.