Portfolio Delta Sensitivity
Portfolio delta sensitivity, often referred to as dollar delta or money delta, measures the change in the value of a portfolio for a one-unit change in the underlying asset price. It aggregates the delta of all individual positions, including options, futures, and spot holdings, to provide a single view of directional exposure.
For a professional trader, managing this sensitivity is crucial to ensure the portfolio aligns with their risk appetite. If a portfolio has high positive delta sensitivity, it will gain value as the market rises but lose value as it falls.
Traders use this metric to determine the necessary hedge ratio to neutralize or adjust their exposure. Understanding this sensitivity allows for more precise risk management and the ability to isolate specific risks, such as volatility or time decay, from directional market risk.