Delta Neutrality Decay

Delta neutrality decay occurs when a portfolio that was initially hedged to be insensitive to price movements loses that balance due to the passage of time or changes in underlying prices. Because Gamma and Theta are interconnected, a Delta-neutral position will naturally drift away from neutrality as the underlying asset moves or as time passes.

To maintain neutrality, a trader must constantly rebalance their position by buying or selling the underlying asset or other options. This decay necessitates active management, as failing to rebalance leaves the portfolio exposed to directional risk.

In high-frequency crypto trading, this decay happens rapidly, requiring automated systems to maintain the desired neutral state.