The degree to which changes in the fair value or cash flows of a hedged item that are attributable to the hedged risk are offset by changes in the fair value or cash flows of the related hedging instrument.
In a situation where a hedge is ineffective (or inefficient) the ineffectiveness may arise from:
- Basis risk or basis differences; or
- Differences between the quantum of (i) the hedged item and (ii) the hedging instrument.
Also known as Hedge efficiency.
Metrics for hedge effectiveness include R-Squared and Slope.